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TECHKON SpectroDens User Manual

1. 64 3 3 OVET VEW IONS 65 3 4 Software module SpectroDens 66 3 5 Device update and device 67 3 6 Software module Export eese 68 3 7 Software module SpectroCheck sess 69 3 8 Software module ColorCatcher ess 70 3 9 Software module PhotoLab eese 7 3 10 Software module MediaWedge esses 74 3 11 Software module ISO Report eese 76 Appendix Technical specifications Manufacturer certificate EC Declaration of Conformity Registration card Chapter How to use SpectroDens 1 Product description SpectroDens is an all purpose modern measurement device Whether it be in pre print for verifying proofs for ongoing quality control at the printing press during delivery inspection of paper and print products or in a color lab SpectroDens is exceptionally suitable whatever the application is Thanks to the individually adjustable display functions you can quickly set up the device for your particular job The product name alone suggests the multiple uses of the device As a spectro densi tometer SpectroDens combines the qualities of a highly accurate spectro photometer and an easy to use densitometer Measurement is spectral i e the entire color
2. lee geed ripe Des icr ISI 19 06 0010 Selected ICC profiles 6 Self created color book 2 Measured sample color 7 Colors from a color book 3 Calculation of L a b RGB L C h and 8 Variations and visible differences CMYK values based on selected ICC profiles for the current sample 9 Software module ColorCatcher 4 Shows the closest match to the current sample out of the selected color book 5 Calculation of L a b RGB L C h and CMYK values based on selected ICC profiles Page 70 Manual TECHKON SpectroDens Chapter 3 SpectroConnect 3 9 Software module PhotoLab TECHKON PhotoLab is an optionally available program module for evaluating and displaying L a b color data graphically Color differences between sample and refer ence colors can be analyzed TE CHRUM 5pisctea Caenpect Edt settings por 7 Sanmglex Pm 9 bte Frac owe Cren m ER Da z fna urs Proba 1 nins 2010 amp EXE e ENUE Prabe 2 t4 06 2610 isi b ang Prats 3 2000 Prae 4 14 05 2010 EN sees Dare Hayta EH elie BE I 7 Red Her b 07 Mem are Car EE DEZ DID Bue C M LE 02 2010 Griy DEL 17 EE Oz 2010 In the upper section of the module win dow the color differences between sample and reference are shown numerically 2 Reference view
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4. casing and remove it 4 When reassembling the new battery the black cable has to 2 Later when reassem point into the direction towards the charging contacts The plug bling do not tighten the has to clip into the socket screw too much other wise it might break 5 The image on the battery case door shows how the battery should be positioned Manual TECHKON SpectroDens Chapter How to use SpectroDens Page 21 Exchanging the measurement lamp The measurement lamp has a high lifetime of several million measurements How ever some day it can fail A lamp failure will be displayed by a message window in the device display A defective lamp or lamp which is close to its final lifetime will not lead to faulty measurements The lamp replacement kit includes the measurement lamp which is integrated in a lamp socket with cables and plug and a special screwdriver type TORX T6 Replace ment of the lamp requires a clean workspace a few technical skills and 15 minutes of time Of course the lamp can be exchanged in the TECHKON service center as well Turn the device upside down and place a soft cloth underneath to avoid any scratches 2 Remove the battery as described on the previous page 3 Release the four screws of the lower casing with the TORX screwdriver completely They can remain in the lower casing 4 Now carefully separate the upper and lower casing and fold it apart Do not disconnect the cable connecti
5. might not be maintained Manual TECHKON SpectroDens Chapter How to use SpectroDens Page 19 Exchanging apertures The measurement aperture can be replaced for cleaning purposes or for change to a different aperture size special screwdriver type T6 is required which is part of each aperture replacement kit Turn the instrument upside down Use a soft cloth as protective layer to avoid any scratches of the display or case surface After each change of apertures a new white calibration has to be carried out Release the two screws completely so 2 When assembling a new aperture they can be taken out Now the aperture take care that no dust enters the optical can be lifted from the measurement head elements Do not press the screws too tight in order to avoid damaging the threads Page 20 Manual TECHKON SpectroDens Chapter How to use SpectroDens Replacement of the rechargeable battery The rechargeable Ni MH battery has a high lifespan However after a certain time depending how it was used it will loose its capacity and it will make sense to replace it Only use original TECHKON SpectroDens replacement batteries The use of other batteries is hazardous For opening the battery case you will need a Philips screwdriver type I Place the instrument upside down Put a soft cloth underneath the display to avoid any scratches Unscrew the battery 3 Remove the battery and pull the plug
6. Measurement functions CIE Color Circle The function CIE Color Circle shows the L a b color values as well Additionally there is a graphic display and a color is shown as a spot within the color circle Sample Lx b 50 L 40 85 2 61 CIE XYZ All measurement functions explained on this page can be operated in absolute mode with DELTA ON or in comparison mode with DELTA OFF The CIE XYZ will display standard color values Remission Curve XYZ standard color values are a different way of describing the color values They are not as practical to use and therefore not as widely used in the printing industry The function Remission Curve offers the complete spectral graph LA 0 8 0 6 0 4 0 2 0 0 400 450 500 550 600 650 700 Remission values are shown in 10 nanometer steps in the spectral range of 400 to 700 nm remission value has a range between 0 remission absolute darkness and total remission of the emitted light The remission curve is the most exact and total description of a color however the values are not very practical to use Manual TECHKON SpectroDens Chapter 2 Measurement functions Page 43 2 3 Additional functions of SpectroDens Premium ISO Check The measurement function ISO Check enables the fast check of a print with regard to the compliance with the ISO standard values ISO 12647 2 The L a b values the dot gain and the spread of the printing
7. 41 25 Media Wedge p 53 12 CIE Color Circle p 43 Gray Guide function p 58 13 CIE XYZ p 43 US version only Page l6 Manual TECHKON SpectroDens Chapter How to use SpectroDens Menu Measurement conditions When the soft key in the right section of the lower bar is activated a window opens where you can set the measurement conditions which define the parameters of the measurement e g which filter will be applied The measurement conditions 4 4 and the Gray Guide Setup US version only are described in detail together with the corresponding measurement functions in chapter 2 Reference Folarizing filter White Reterence Density Filter Density Reference Setup REF ifs Dotgain Setup Printing Setup Y ule Nielsen coefficient DIM 16536 FOL p Trapping formula Illuminant 10 Observer 11 ISO Check Setup 12 equation 13 tolerance 3 0 The device has an integrated Polarizing filter which can be activated or deactiva ted by a push of a button Polarizing filters compensate for measurement differences between glossy and non glossy surfaces e g freshly printed and dried sheets The techni cal standards in Europe recommend the use of such a filter for densitometric measure ments On the other hand colorimetric measurements e g L a b measurements should be taken without a polarizing filter By selecting Auto from the menu
8. sound Auto Paper White Calibration Measurement Automatic Dens MA Display Contrast Language English y Date 03 05 2003 10 47 21 Time d UU Am Display format CMYK 7 00 10 Density adjustment SLOPE Absolute white reference values 12 13 Device Voltages The SpectroDens INFO screen shows 2 Sound will activate an acoustic signal the type of device Basic Advanced or Pre after each measurement mium the software and hardware version 3 With activated Automatic Paper White Calibration SpectroDens will always as well as the serial number perform automatically a paper white calibra tion when a measurement on a paper white ENS is made PECTRO BASIC We recommend to deactivate this function Palen i i a and instead to intentionally perform calibra Serial number A901011 tions with the calibration function This way you always know that a calibration is per formed properly Page 14 Manual TECHKON SpectroDens Chapter How to use SpectroDens Menu Device settings 4 Using the device setting Measure ment Automatic Dens you can activate the automatic switch to values for the measurement function Automatic Density When measuring a patch the device will then automatically switch to the display Dot area and show the calculated values You can also turn off the automatic switch to values to avoid switching caused by fluctuation W
9. Chapter 2 Measurement functions A Please place the instrument on the Ceramic White Standard and press the green START button Press the red button to cancel Sample Please measure paper white PT1 black AES 2 58 xw 0 4 0 5 In order to take correct measurements an absolute white calibration must be per formed and will be confirmed in the display when done A measurement of the paper white is neces sary for correct calculations Now the instrument is ready to measure The used paper type and backing are indicated in the display When measuring solid inks the values are compared to the ISO reference values The AE value is indicated and the symbol shows if the value is within or out of tolerance The recognized color and L a b value of the measurement are displayed as well The selected paper type and backing type are always indicated Manual TECHKON SpectroDens Chapter 2 Measurement functions Page 59 The AE value is calculated as long as the difference is in a reasonable range 61 3 x 31 0 b 45 1 PT1 black 10 13 If the difference exceeds limit then only the measured density value is displayed without comparison This procedure works for all CMYK colors The selected paper type and backing type are PT1 black e always indicated The color detection works for trapping patches as well The recognized type of patch is displayed in the prin
10. ISO 9000 certificate USB cable for PC connection CD with Windows software SpectroConnect The carrying case protects SpectroDens and the CD is attached on the last page parts of this manual Optional accessories Exchangeable apertures of small size for small measurement patches Exchangeable aperture with UV Cut filter for measuring fluorescending samples Print Control Strip TECHKON TCS the Digital Print Control Strips TECHKON TCS can be downloaded free of charge at http www techkon com Device upgrades for the Basic or Advanced models to higher functionality Additional software modules for SpectroConnect Color quality control PhotoLab and Ugra Fogra media wedge evaluation Color reference SpectroCheck Replacement parts Charging console with white standard rechargeable battery measurement lamp All parts are separately available and easy to exchange Page 8 Manual TECHKON SpectroDens Chapter How to use SpectroDens 1 3 Design of SpectroDens SpectroDens is a solidly designed measurement device which is very functional and easy to use It is compact in size the buttons can be reached with the right index fin ger when the device is held with the right hand The LCD display is inclined towards the user so the display information can be read clearly SpectroDens can be easily positioned on the measurement sample Exchangeable Charging contacts measurement aperture Device base H c E x c
11. Probe 4 14 06 2010 Measurement conditions TSO 13655 M1 CIELAB geometry 0 45 45 0 2 observer 050 white backing 15 07 2007 15 07 2007 Red Mer 16 07 2007 Green Ce Y 18 02 2010 foe CM 14 02 2010 Grey 16 07 2007 Paper type 1 0 13 02 2010 Color books Nore FORA 39 sx Paper type 1 88 Paper type 2 00 Paper type 3 8 Paper type 4 Paper type 58 SeectroDens Premium SD UK IK WS 2K ms 3K WS 4K 5 5K 5 6K ms 7 ws 1510K WSIE WS 12K 13K H5 14 K 5 15 16K HES 17K W510 HS 21K s TOE Wes ws 25 HS 20 WS 27K RE MS 33 K we Ser 2 The software supports also the Ugra Fogra media wedge in version 3 0 The picture shows the section Details Manual TECHKON SpectroDens Chapter 3 SpectroConnect Page 75 3 11 Software module ISO Report The program module ISO Report allows a fast and comprehensive documentation according to the ISO standard The ISO Report can be printed out Spreclim Cet Chesier e 7 ISO Report gt ow s gt Color library k Date FHA Frota 1 ES Page 3 14 08 2003 14 05 22 D Poper type OPT echesrre Det inequ
12. a distance between the measurement head and the sample where light could pass through because this can influence the measurement On the bottom of the device there are anti slip rubbers which prevent the device from being moved during a measurement The color of the background material underneath the measurement sample can have an influence on the measurement result Different technical standards describe which backing material to use In the printing industry the following procedure is widely used White backing for single printed papers and black backing for double printed sheets in order to avoid that the back printed side might shine through the paper and influence the measurement Page 12 Manual TECHKON SpectroDens Chapter How to use SpectroDens Device settings with the display menu Thanks to the interactive device menu settings are very easy to adjust The display is divided logically into a center and a frame The center displays the measurement results It is framed by interactive keys and status information displays Pressing shortly on one of the Arrow buttons will move an active cursor from soft key to soft key around the frame An active soft key is indicated by inverse appearance except for the items Reference and Sample which just open up to the center window when selected By keeping an Arrow button pressed the cursor travels from soft key to soft key at a constant speed until the Arrow button is
13. depressed again By pressing the Enter button a function behind a soft key is selected and a select able menu appears Within such a menu again the navigation is done via the Arrow buttons and the selections are made with the Enter button Some menu items or soft keys might be shaded in appearance and can not be selected because they are only active in a higher performance package Advanced or Premium of SpectroDens Pressing the red round Escape button will always bring you one step back in the menu or will close a menu window It can be compared to the Escape button or Undo function on a PC It will always bring you back to the measurement mode Escape button 2 Arrow buttons 3 Enter button The center of the display shows the current measurements Reference measurement Sample measurement Calibration DELTA mode for comparisons Average function only SpectroDens Premium Color library only SpectroDens Advanced Premium Device settings Measurement conditions Measurement functions 0 Battery and charging status UAWN 95 0 M Manual TECHKON SpectroDens Chapter How to use SpectroDens Page 13 Menu Device settings The soft key with the tool symbol opens the window for the device settings Within this window you can navigate with the Arrow buttons and select with the Enter button The red Escape button brings you back to the measurement mode Reference spectroDens INFO
14. functions will appear in shaded gray on the LCD display New device software can be uploaded into the device There are two different types of files to upload Device update loads the new version of device software Device upgrade upgrades to SpectroDens Advanced or Premium has to be purchased see chapter 3 5 This shows the device display on the computer screen All measure ment buttons can be remotely operated by the mouse pointer The screenshot can be saved This is a very useful feature for product trainings SpectroDens settings 3 4 Lock device function Device update Device screenshot Measurement mode Polarization filter White reference Premium 08 10 2008 Density filter DIN 16536 Hardware version 2 Serial number Ag04011 Signal e Auto paper white calibration i Measurement Automatic Dens 181 000 Display contrast Display format OMYE Tule Nielsen factor Trapping Iumination Observer dE Fornula PASS FATL Tolerance 100 Preucil 050 EN ae CIELAB Ce AU Export Page 66 Spectrocheck Compare colors A PhotoLab Manual TECHKON SpectroDens Chapter 3 SpectroConnect CalorCabcher 3 5 Device update and device upgrade By the application of this module SpectroDens can be loaded with a new internal firmware which is selected by Device update or SpectroDens can be expanded in functionali
15. infor mation the spectral fingerprint of the color is precisely registered The measured spectral data is converted into measurement data for descriptive analysis and display Densitometric data is widely used in quality control during the printing process Colorimetric data is used in the evaluation of print proofs the creation of color profiles in color management and the color matching and formulation of inks The device works strictly according to the standards valid for the graphic industry Select different status filters for density measurement among the device settings A special technical feature is the polarization filter which can be activated via the push of a button The SpectroConnect software supplied with the device explicitly displays mea surement data on a computer monitor Measurement data can be transferred into Microsoft Excel or other applications The integrated color library is especially easy to use For example you can load complete digital color books into the device The software also serves as the connecting module for other applications e g programs for the production of characteristic printing curves or colorimetric quality control Manual TECHKON SpectroDens Chapter How to use SpectroDens Page 5 All advantages of TECHKON SpectroDens at a glance High quality spectral engine Large high resolution clear contrasting graphic display Patented measurement
16. measurement function InkCheck ColorGuide combines in a very easy way the advantages of colorimetry with the familiar densitometry Thanks to this helpful function working with the process standard ISO 12647 is simply achieved The colori metric deviations are reported and additionally recommendations for amounts of ink supplied in terms of density values are given In contrast to the measurement function ISO Check the measurement function InkCheck ColorGuide is not only able to check the CMYK print ink but also spot colors provided that the appropriate spot colors were chosen as references in ad vance In addition to the color books which are included in the contents of delivery for example the HKS color books you can create your own color books for spot colors and use them as a reference The recommendations for amounts of ink supplied in terms of density values for spot colors are based on CIE L a b measurements First a color book which holds the reference color data has to be selected The reference values for the 5 paper classes defined in the ISO standard are pre set in the Calor book NN Load Reference from Color Search for closest color Colorbook Reference memory Bx device memory The data set Proof is for measurements on white backing and the data set Print for measurements on black backing Paper type 1 If they can not be found in the device mem Paper type 2 Paper type 3 ory t
17. of Preucil There have to be made three measurements in total Two measurements on each of the Measuring order 1st printed solid d two separate process colors and finally one end printed solid d measurement on the resulting overprinted Trapping patch Here in this example first Cyan and second Magenta has been measured The final mea surement is done on a blue patch which re sembles the overprint of Cyan and Magenta The trapping value is 65 The higher the value the better the overprint of two colors 9 0 39 1 52 Additionally to the trapping value in there are the densities for the separate color patches displayed The densities are always displayed with the filter channel of the second printed ink in this case Magenta This explains why the density value for the first T 1 2 printed ink Cyan is so low SpectroDens will recognize automatically the order of colors LK C M Y SLUR C MI C M Y 80 40 BAL t 4 2 3 as they are printed Switching the first and second measurement therefore will lead to the same result There are no standard values for the trapping measurement The values which can be obtained depend on the printing process and particularly on the type of ink and paper used Typical values for standardized print with Paper Class glossy coated are C M gt 60 gt 72 and C Y gt 85 75 The SpectroDens models of the Advanced and Premium class offe
18. one sample which then are Sowadiaa ce averaged to an average value The number of measurements which result in the calcula tion of the average value is defined in this window Manual TECHKON SpectroDens Chapter 3 SpectroConnect Page 73 3 10 Software module Media Wedge The program module Media Wedge serves the fast colorimetric analysis of the Ugra Fogra media wedge This digital control element is available from Fogra the German Graphic Technology Research Association www fogra org The test element is placed at the border of a proof The software evaluates the color quality printed in colorimetric terms Color differences between the Fogra target values and the measured samples will be clearly represented in the program module Media Wedge TLOMKON Spectre Connect Edt Curateretcarees gt Samples 4 Name Dee MedSeWedge Deka Pret settings MediaWedge es Color library gt Proba 1 14 06 2010 Probe 2 14 06 2040 Probe 2 14 06 2010 Probe 14 06 2010 Reset values 5 Lebel val Ottvet_Paper we 2 1155 TEST SCAN Mw 3 Pepe types T 2 Ose 1406 2710 wee 115 Iepercies PH Liem E od perder TV CMY a 40x 13 7 5 Ferme Ji D Peod Garance 16 90 2007 Porting icd a
19. patch and then a measurement on a patch 7 screen patch The dot area value is calculated with the Murray Davies formula Reference Sample First place the measurement head above a solid patch and start the measurement by To save or clear solid density value will be displayed press and hold pressing the green button The solid density 2 Now make a second measurement on a patch and the dot area in will be shown In this case a measurement has been taken on 40 patch The resulting dot gain can be easily calculated 53 676 4076 13 6 76 The dot gain value gives the information to what degree a point is enlarged or decrea sed during each process step of the repro duction process chain LK C M Y CMI K C M Y 80 The double arrow on the left side of the device display indicates which measurement 2 has to be done next Should several dot area values refer to the same solid density this value has to be solid density measured only once and can be saved for saved y consecutive measurements After a solid density measurement just keep the Enter button pushed for approximately 3 seconds until the density value is framed Now an unlimited number of measurements can be made Deactivating is done by keeping the Enter button pressed again Page 30 Manual TECHKON SpectroDens Chapter 2 Measurement functions Dot Gain Contrast The function
20. the brighter the paper Artificial optical brighteners in the paper will lead to high values as well Yellowness index positive value paper has yellow cast negative value paper has blue cast PASS FAIL The PASS FAIL function shows at a glance if a measured sample is in or out a set tolerance compared to a reference value First set the allowable limits of the AE tolerance Select in the menu section of the 050 2 1 noPOL ABS measurement conditions the item PASS FAIL tolerance and edit the desired toler ance value by pressing the Arrow buttons Dotgain Setup Printing Curve Setup Yule Nielsen coefficient Trapping formula Illuminant Observer ISO Check Setup equation PASS FAIL tolerance Media Wedge Setup Every sample measurement is compared to the reference If the color distance is within the set toler ance in this case 0 69 2 0 PASS will be displayed For out of tolerance measurements accord ingly FAIL will be shown and an acoustic signal of three short beep tones will sound Page 52 Manual TECHKON SpectroDens Chapter 2 Measurement functions Media Wedge The Ugra Fogra Media Wedge CMYK is a control element for checking the color consistency of digital proof systems issued by the printing institute Fogra This practi cal function is for measuring and analyzing the patches of this control element Color book Load Heference from Color baok S
21. therefore are lower as values obtained with polarizing filter Please ensure that the right measurement conditions are set Manual TECHKON SpectroDens Chapter 2 Measurement functions Page 49 CIE L C h ab CIE L u v CIE L C h uv CIE xyY DIN Lab99 The CIE L C h ab display is closely related to the CIE L a b display Instead of Cartesian coordinates polar coordinates are used The value C stands for Chroma and the angular value h for hue L C h values are very popular because they describe colors in a simple way The further the color is from the center of the color circle the more saturated and vivid it appears The Premium version of SpectroDens enables the display of additional color spaces which might be used mainly in industries outside printing CIE L u v CIE L C h uv CIE xyY und DIN Lab99 J CIE L C h ab CIE L u s CIE L C h uv CIE xyY DIN Lab89 mm wm sei wm 1 1 Different formulas for calculating the color 050 2 noPFOL ABS distance AE can be selected as well The Euclidean color distance AE a b is che most widely used although it is criticized that for Dotqain setup Printing Curve setup die keen aa 0 09 certain areas in the color space the visual rapping formula Preucil z escent perception of color distances does not match Observer _ LZ the a b color distance accordingly ISO Check Setu AE e
22. this is not the case another set of print ink must be used Manual TECHKON SpectroDens Chapter 2 Measurement functions Page 45 ISOPTi black 150 lpi oxi ISOPTi black 150 lpi c 10 835 gf 11 996 7 ISOPTi black 150 lpi ISOPTi black 150 lpi After the measurement of the solid patch you can measure the patch which you have defined in the setup The dot gain is checked in regard to its con formity to the ISO standards Concerning the midtone the spread will be displayed additionally CMY The deviation of the colors CMY is allowed to reach 4 in the middle tone of 40 per ink But to avoid that the gray balance is distur bed too much the spread limits the permit ted difference between the highest and the lowest tonal value to 5 76 Page 46 Manual TECHKON SpectroDens Chapter 2 Measurement functions By measuring the trapping only the variation from the reference will be displayed 150 black 150 lpi The ISO standards define no tolerances for trapping only informative reference values are given Y 2 1 But it is recommended not to exceed a AE nM een value of 10 in the secondary colors which ISOPTiblack 150 lpi corresponds with the sum of the permitted AE deviations of the primary colors 4 4 L 500 a 68 9 b 47 2 ISOPTi black 150 lpi Manual TECHKON SpectroDens Chapter 2 Measurement functions Page 47 InkCheck ColorGuide The
23. total discharge and damage of the battery Charging starts automatically by placing the device on the charging console Please keep the charging contacts on the console and under the device always clean If oxidized use a special metal contact cleaner Five seconds after placing the device on the console the display will show a clock and an animated battery symbol When the symbol displays a full battery the charging is completed and the battery is fully charged Completely charging an empty battery will take approximately four hours SpectroDens has a regulated charging management This means it will power charge an empty battery so the device can be used again after a few minutes On the other hand there is no overcharging of full batteries You can park the device on the charg ing console when not in use This way it is guaranteed to have always an operational measurement instrument at hand Up to 10 000 measurements can be carried out with one battery charge Manual TECHKON SpectroDens Chapter How to use SpectroDens Page l How to measure After switching on SpectroDens it is instantly ready to measure Just position the measurement aperture on top of the measurement sample and press shortly with the index finger the green measurement button Within one second the resulting measurement value will appear on the display of the device Please ensure that the device always has a firm stand on a flat surface There must not be
24. 0 2004 51 2004 PEE 26 51 2004 ENDE HAE Pr f Hoe Paper trpe LES ax xr ak dix dex Paper 2 BB CEET DEEN 28 01 2004 Paper types 308 2 0 29 Paper type HS 2E E 26 01 2004 Gs Si wv e a Sal sen KSeectreDens Premium SD UK Export Phobab Compare SoedroDens Page 76 Manual TECHKON SpectroDens Chapter 3 SpectroConnect TECHKON Measurement technology Spectral remission measurement and color density determination to ISO 5 3 4 Measurement geometry 0 45 optics to DIN 5033 Spectral range 400 to 700 nm in 10 nm steps Measurement aperture 3 mm round standard optional easily exchangeable 1 5 1 5 mm 3 mm round with UV Cut filter Light source Gas filled lamp type A illumination Polarization filter Twice linear crossed Switched on and off per button release Measurement time Approximately second per measurement White reference Absolute and relative Absolute white standard integrated and protected in charging console Illumination types Standard Observer A C D50 D65 2 10 Density filter DIN 16536 DIN 16536 NB ISO ANSI T ISO ANSI I ISO E Dmax Advanced and Premium models only Density measurement range 0 00 D 2 50 D Repeatabil
25. 24 56 Pacer type 588 res WK Je 200 INE MEE E Ae Premam SD CK fet verte Cirle Todo pe bes 2490 14062010 g m SpectroCheck d Hoe Individual results kret L4 08 2008 Gray Q d Groon Q d 9f HS 1E 26 01 2009 HS dE 23804 HES 3E 26 0 HS Z DL 2090 He SE HES GE Z DI 23848 HES Z DL HES BE 26 01 2004 HO IK 26 01 2004 Overall result The Frees unire BOES Far CSC i alin He eremtes IO Giani Print ren Magenta 14 89 2002 Yoho 14 23 2202 Eed Mey HANE 2 01 2004 KSE 26 01 2004 HORE 6 01 Hick ba 25 01 2004 eler HES DE 26 01 2004 HA HE 24 01 J Start HCE 24 01 m CE erst HIE 25 012204 Maca HANE 24 01 0 a KSE 25 01 2004 Hen HEHE 25 01 2004 Paper 188 HG SE 25 01 2004 Pager 28 E HSSE 25 01 2004 miror dl ge CALL reiege Premism 5D Ut Creche SpacrroDera Phobail as Compare Hrs Re ruri Greg gt pan om Manual TECHKON SpectroDens Chapter 3 SpectroConnect Page 69 3 8 Software module ColorCatcher The program module ColorCatcher is available in the models SpectroDens Advanced and Premium Based on a L a b measurement and referring to sel
26. 4527028 Device label with serial number Battery case USB connector for PC connection Measurement Diss Spas Green measurement Navigation buttons button also for switching on Right hand grip zone Device display The device incorporates a high resolution spectral sensor which analyzes the color spectrum of the measured sample The spectral data is the base information for calcu lating densitometric and colorimetric data which is displayed Densitometric values can be solid density dot area dot gain or trapping values Colorimetric values are typically CIE L a b or AE color information The USB connector is for linking with a PC The USB cable with a Mini USB plug which fits into the connector at the back of the device is part of the package Manual TECHKON SpectroDens Chapter How to use SpectroDens Page 9 The charging console incorporates an absolute white standard which is protected against light and dust Turning the black wheel releases the white standard from the protected position The ceramic white standard should not be touched and should always be kept clean Therefore we recommend to keep it in the protected position and only to turn it out during the calibration procedure The black wheel can be turned to bring the protected absolute white standard in position for the calibration procedure 2 Charging contacts 3 Low voltage connector for the plug of the AC adapter The above
27. 9 00 2010 Hare ES IK 26 01 2004 HES 2K 26 01 2004 1 HES 28 01 2004 miro mmm HES 26 01 2004 Date SD 2004 Magenta 18 07 2007 i Hes TK 55 01 2004 16 07 2007 HES BK 20 08 CO Red Mer 16 07 2007 IOE 20 01 2004 Geean Cen 10 02 2010 PES IIE 26 01 2004 Blue 28 02 2010 HES Iz E Z5 DI 2004 Ger COM 15 07 2007 HES 13E 26 00 EECETTERS 18 02 2010 HES 26 01 2004 M HES LSE 26 01 2004 Hir 28 01 2004 HS dT 20 01 2004 35 01 2004 PES ZI 20 08 2004 ES ZZE 26 01 2004 RES 23 E z5 DE 2004 HES 24 E 28 01 2004 HES 25 E 26 01 2004 HES 26 E 28 01 2004 27 26 01 2004 2 111 2004 zZ9E 20 00 2004 RES 31 5 zo 01 2004 HES IE 26 01 2004 33 E 26 01 2004 LE het z ns nna Das Eich 12 54 4 20d Samples and references can be selected 2 Different modes of the L a b display can directly with a mouse click or by choosing be selected from the pull down menu The modes Bargraph and Quality Cer tification Chart show the trend of AL Aa Delete and renaming is done via the menu and Ab values of a measurement series e Table View shows all values numeri A TECHKON Spectro Connect cally MasteriSample Photolab sett e In the Job window job relevant text data E cron rtr can be edited AX Delete master 3 A measurement va
28. BLACK Activate the soft key with the tool icon and select the menu item Density adjustment SLOPE Select the menu item CYAN Enter the Cyan value you find on the calibra tion chart By pressing the Arrow buttons the value can be increased or decreased In the same way enter the data given by the calibration chart for Magenta Yellow and Black Manual TECHKON SpectroDens Chapter How to use SpectroDens Page 23 Make SLOPE calibration _ Select the menu item Make SLOPE cali bration A Carry out a paper white calibration as de scribed in the device display Flease place the instrument on paper white and press the green S T ARTT button Fress the red button to cancel A Now measure consecutively the solid patches of Cyan Magenta Yellow and Black Flease measure CY AN MAGENTA YELLOW and BLACK A correct measurement is indicated by a checkmark behind the respective color The SLOPE correction values are shown A reset of the SLOPE correction values is done by activating the menu item Reset SLOPE coefficients You reset the device back to its original factory settings Page 24 Manual TECHKON SpectroDens Chapter How to use SpectroDens Reset A device reset sets the device back to factory settings All calibration data including SLOPE values stored measurement values reference target and tolerance values will be deleted If the reset procedure in the settings window is not po
29. Dot Gain Contrast is closely related to the previously described function of dot area Here also first a solid density measurement is carried out and then measurements follow In the lower part of the device display there is Shown which patch has to be measured next In this case there just has been measured a solid density patch with a density of 1 74 The double arrow points to the 80 meaning an 80 patch has to be measured next The round Escape button will always lead back to the previous step in case a wrong measurement has been made After the last measurement has been done in this case the 80 patch additionally to the Dot Gain value the Printing Contrast will be calculated and displayed M Y SLUR C M K C M Y 80 40 BAL l 2 3 The setting for the patches to be mea sured is done in Dot Gain Setup Polarizing filter White Reference Density Filter Up to three percentage values can be edited The TCS print control strips in clude two different patches 40 and 80 76 Dotvalue 2 Dot value 3 Manual TECHKON SpectroDens Chapter 2 Measurement functions Page 3l Trapping With the feature Trapping there can be checked how good two layers of ink which are printed over each other represent the resulting mixed color In the Basic version of SpectroDens the trapping calculation is carried out according to the formula
30. PARTAPRES Dear Customer Thank you for using information provided on our website You can check the latest prices and place orders for products contained in this document by visiting our website at http www partxpres com Information contained in this document was provided by the product manufacturer or service provider Although great care has been taken to ensure correctness and relevance of the information PARTXPRES does not assume any responsibility or liability for the information contained herein Customer Service PARTXPRES TECHKON PECTRO PIENS Manual Spectro Densitometer SpectroDens Software SpectroConnect TECHKON manuals technical documentation and programs are copyrighted Reproduction translation or transfer to an electronic medium in whole or in parts is prohibited TECHKON software is the intellectual property of TECHKON GmbH Purchase of the soft ware grants the user a license for the use on one computer only Programs may only be copied for back up purposes TECHKON can not be held liable for any damages that may occur by the use of TECHKON products The TECHKON team takes great care in producing this manual Nevertheless we can not fully guarantee the complete absence of errors TECHKON GmbH and the authors can not be held liable neither for any possibly incorrect statements nor their consequences Product that are not made by TECHKON GmbH are mentioned for information purposes
31. Page 67 3 6 Software module Export Measurement data can be exported in any other Windows application e g Microsoft Excel Word or other programs which can handle color data e g a RIP calibra tion software SpectroDens works like the keyboard Pressing the measurement button will place the measurement value automatically at the location where the cursor is Export Export With this module vou can transmit The device simulates the keyboard measurement values from the device The measurement values will be inserbed at the location display automatically into other where the cursor is active This can be either be the applications such Excel or Word Export window below or another application In the second case Ehe SpectroDens Connect has bo run in the background Following data will be transmitted Data Format Separator n Densities 00 ta e Empty m IR Return ps el Sk Go o MediaWwedge Export SpeckroCheck Compare PhotoLab ColorCatcher settings colors ULA Here is defined which data will be trans 2 The Export window can also be used for mitted how it will be formatted and what testing data transmissions type of spacing between the measurement data will be All the settings can be saved This example shows the transfer of CMYK recalled later density values Page 68 Manual TECHKON SpectroDens Chapter 3 SpectroC
32. USB port for easy transfer of measurement data head for exact and to a PC and for download of additional functions direct positio and device upgrades via PC ning All measurement functions easily selectable Custom configuration depending on application self explanatory operation Automatic measurement function displays always the relevant values Ergonomically positioned user friendly measurement button Measurement values can Exchangeable aper be memorized with tures even for the date and time tag smallest measurement patches Handy and compact Quick measurement Low weight approximately second Durable precision Insertable polarization filter by push of a button Conform to ISO and DIN standards Exceptionally suitable for measurement of the Ugra Fogra media wedge Absolute white standard integrated and protected in charging console Rechargeable high capacity batteries with quick recharge power management on practical charging console for up to 10 000 measurements per battery charge Page 6 Manual TECHKON SpectroDens Chapter How to use SpectroDens Three different performance packages SpectroDens is available in three types of performance packages The model Basic with the essential density functions the Advanced version which adds extended densitometry functions colorimetry and a color library and as the flagship model the comprehensive Premium device The device
33. asncy Mcr 175 ks Pa us y aras d E Ce ee NNI A dE 2 15 214 314 1 75 He 1E 22 01 d Cc d d K d Het 28 02 20 P 4 24 01 2004 aa Hes 38 01 2008 vn 120 Kai uem ES Ka m f DEEN b De AE 28 03 2004 Magenta 16 07 2007 x Fre res a EM AM el ues M A uns HS BE EE WE S Au d eum Band o vm mx Zam Gree Car 18 02 2012 28 01 2064 Bech TIE Hes Ger CAM 45 E amp 1 cu PES EXE H Paper LES 18 02 2008 itd M ee 3 a Gut eim 28 52 2004 38 00 2064 i m Start Hes 22 PES ERE EE HENE 01 009 36 01 3004 Hes de e 25 51 2004 pss ETE 5 51 2008 sank 38 01 2000 Eeer 18 SET 34 00 2008 Paper type af HS E 25 01 2004 Paper toe S EE HEE 26 01 2004 24 01 2004 H a Le Spectroteens Premam Uk d TE urs ke TECHQOH amp pecbm Connect Calor drda Dot gain HE XX CUN WE it H Pii 2553 20 eben 28 01 2084 Bas Har 2850 20 fem C 2 52 2004 Bee 24 01 2004 NAM Pacer Froe LES 18 02 2008 Ju M 26 00 2004 eH Lols brata Lii eH EE 28 0
34. case the spectral density for the blue color is D 1 37 at a peak wavelength of 580 nm Only spectral densities relating to the same peak wavelength Dmax can be compared The Advanced and Premium models display the spectral density automatically as well in the Densities CMYK measurement mode The density values for CMYK show to what extent the spot color can as well be regis tered by the CMYK color related standard density filters Here in this case the blue color is close to a Cyan therefore the density value in the Cyan channel is quite high Page 38 Manual TECHKON SpectroDens Chapter 2 Measurement functions ExPresso Mini The measurement function ExPresso Mini allows the fast control of the print ing quality during the printing process The last ten consecutive measurements of a printing color can be taken on a print control strip of a printed sheet for the ink zone control In addition ExPresso Mini provides the opportunity to get an overview of the stability of the print run by measuring the last ten printed sheets Advanced functions for the fast and comprehensive control of the printing quality during the printing pro cess features the software TECHKON ExPresso 3 0 in connection with the automatic measurement system TECHKON SpectroDrive Reference 1 42 1 4 144 14 1 49 145 145 147 ExPresso Mini can display the last ten mea surements per color When after the tenth measurement the display is f
35. ce Voltages is for diagnosis of the device by service person nel Page 5 Menu Measurement functions When the soft key in the left section of the lower bar is activated a window opens where you can select the measurement functions The measurement functions listed below and the Gray Guide function US version only are described in detail in chapter 2 Reference Automatic Density l 2 Densities 3 Dot Area 4 Dot Gain Contrast 5 Trapping 6 Printing Curve 7 Printing Plate 8 Slur and Doubling 9 Density graph 10 ExPresso Mini AO I2 CIE Color Circle 13 14 Remission curve 15 SO Check 16 InkCheck 17 CIE en ab 18 CIE 19 CE CUT uv 20 CIE xy Y 21 Lab88 22 Metamerie Index 23 Whiteness Y ellowness 24 PASS FAIL 25 Media Wedge Index of the measurement functions Automatic Density p 26 4 Remission curve p 43 2 Densities CMYK 29 15 ISO Check p 44 3 Dot Area p 30 16 InkCheck ColorGuide 48 4 Dot Gain Contrast 31 17 L C h ab 50 5 Trapping 32 18 CIE L u v p 50 6 Printing Curve 33 19 CIE L C h uv p 50 7 Printing Plate p 34 20 CIE xyY p 50 8 Slur and Doubling p 36 21 DIN Lab99 p 50 9 Density graph p 38 22 Metamerism Index 51 10 ExPresso Mini p 39 23 Whiteness Yellowness 52 24 PASS FAIL p 52 CIE L a b p
36. com The device is compliant with EU directive 89 336 EWG concerning the electromagnetic compatibility EMC and is provided with the CE label The device complies with Part 5 of the FCC rules and is RoHS compliant class 9 The supplied AC adapter is according to regulations UL IP 40 IEC 950 and VDE EN ECIO The device is maintenance free The measurement aperture has to be kept clean from dust It can be cleaned with clean compressed air and an optics brush We recommend a functionality check up every 24 months at the TECHKON service center which includes the issue of a new Manufacturer certificate The warranty for TECHKON products is 24 months starting with the date of purchase The warranty is invalid if the damage is caused by improper use of the device Only original TECHKON spare parts and accessories are to be used The device is according to 14 ElektoG registered under the EAP no DE 98280049 Devices for disposal can be sent directly to the manufacturer Calibration Standards Place The integrated spectral sensor is calibrated by a white calibra tion After performing a white calibration with the supplied absolute white standard integrated in the charging console the device is long term stable We recommend to make a white calibration before every measurement series to ensure the device is calibrated correctly The remission values documented on back of the charging console are derived from a ceramic whi
37. d the procedure can start again from the beginning Start Averac le measurement Activating the menu item Stop Average Stop Average measurement measurement you quit this measurement Number 4 mode Page 54 Manual TECHKON SpectroDens Chapter 2 Measurement functions QJ 2 4 Storage of measurement values The versions SpectroDens Advanced and Premium have included a Color library This is a digital memory for storing color values which can be compared or ex changed with the Windows software SpectroConnect There are three different sections where color values can be stored Reference memory for up to 100 reference values Sample memory for up to 250 sample values Color book memory for up to 10 color books with up to 100 color values each Reference memory To access the Reference memory the device must be in the reference mode The color values are saved serially one after another in the memory After the 00th color value is stored the message indicates that the memory is full By pressing the Enter button with the device in reference mode a pop up window opens reos CUR Select Within the window navigation is done with automatically he A k Search automatically Delete Delete all Reference A With Save the last reference measure ment taken is stored Reference saved 2 Select shows a list of stored color values Within the list values can be se
38. e type of measurement patch this can be Solid density D Dot area in Gray balance In this example the measurement has been taken on a Cyan patch SpectroDens recog nizes the type of process color and displays the solid density value of Cyan which is displayed with the symbol Values for Cyan C Magenta M Yellow Y and Black K key color can be shown The density value is a value without a unit It corresponds to the amount of ink applied on the paper surface The higher the density value the higher the thickness of the ink layer The correct density value is dependent on the printing parameters paper ink printing process Usually density values are between and 2 5 The second measurement has been taken on a Magenta patch The former Cyan measure ment still gets displayed Measurements of a specific process color will be overwritten as soon as a new measurement of this specific color will be made UR K C M Y 80 40 BAL SL 1 E Page 26 Manual TECHKON SpectroDens Chapter 2 Measurement functions C M a Y A 40 BAL ME T Measurement Reference M Y 0 80 0 72 0 81 0 82 LK C Y SLUR C4MI K Y 80 40 BAL A gray balance patch is composed of different portions of Cyan Magenta and Yellow It does not include black ink Manual SpectroDens Chapter 2 Measurement functions For t
39. earch for closest color Calor book Reference memory Dotqain setup Printing Curve setup Yule Nielsen coefficient 7 00 Trapping formula Illuminant Observer 50 Check Setup AE equation PASS FAIL tolerance Tolerance Primary col maxs E Tolerance Primary col maxaH Tolerance All patches maxaE 5 0 25 6 0 Tolerance All patches aE 30 15 3 0 Tolerance CMY patches Automatic Measurement Measurement Intervall sec AL ab 0 32 2 96 0 59 1 29 158 0 39 Manual TECHKON SpectroDens Chapter 2 Measurement functions First a color book has to be selected which contains the Fogra reference data If not found in the device memory the color book which is valid for the paper class to be mea sured can be uploaded from the Windows software SpectroConnect Additional settings have to be made in the Media Wedge Setup window The settings for AE tolerances are according to Fogra specifications By activating Automatic Measurement the device will make consecutive measure ments automatically with measurement interval to be set Starting and stopping a measurement series is done by pressing the green measurement button The reading of the media wedge is from left to right and from first to second row The measurement begins with patch Al then A2 etc Wrong measurements 1 2 3 4 5 A B red Escape button and re measuring A
40. ected ICC profiles this program module displays the conversion into the color models L C h RGB and CMYK Furthermore an automatic search for the closest matching color of a pre set or self created color book is carried out The lower part of the module window informs you about the exact color deviations between the sample and the recommended color of the color book Xs TECHEDH Spectre Connect Be hesirik curses ook gt g me 72 Sonor ER Color library Color sde k m pm Ki mobo profil ep Pre 1 14 06 2225 2 14 04 2258 CE minis e T bone KC princes profile Coabed 2 IECIT 4 KEE HKS 14K 6 fangs cope IS E Cube a HS BE 7 28 01 2004 Hearia 2567 F 2004 15 2 2087 He HE 6 01 204 Pei Mev EHS CN HS PDK 26 01 2009 12 2 2588 25 01 2004 PES IFE 3008 CHHT 18 17 2007 Ge OK m 3 xh 18 02 2200 i rei pee HES 26 01 2004 ED St His BBE 2004 FS 23 K Th 004 ze Start PESZE EE HS pai 1004 mm GEET 35 01 2064 HOS ZK 2004 Hi gd HIG 26 K Zu DI 2004 d ITE 36 01 2004 Pacer type 2 BB MSHE 2601 20 Facer tree 3 BB Hes 29K 35 01 20M Fares 9 2 01 2 Paper typa S BB s HSE 24 01 3004 gt LE A amp e e mome Premium Si vi Epot
41. ended use utilisation pr vue uso previsto Color measurements mesure de la couleur misurazione del colore bei bestimmungsgem er Anwendung den grundlegenden Anforderungen gem EU Richtlinie 2004 108 EC entspricht und dass die folgenden Nor men angewandt wurden complies with the essential requirements of the 2004 108 EC Directive if used for its intended use and that the following standards has been applied r pond aux exigences essentielles du Article 3 de la directive 2004 108 EC pr vu qu il soit utilis selon sa destination et qu il r pond aux standards suivants soddisfa tutti i requisiti della direttiva 2004 108 EC qualora venga utilizzato per l uso previsto e che le seguenti norme siano applicate angewendete Norm EN 55022 2006 Applied standard standard appliqu Ausgabe 2008 05 2007 norma applicata issue dition pubblicato EN 55024 Ausgabe 2003 01 1998 1 2001 2 2003 66 19 0 6p 03 el 931 9p Jo 103304 y uo eqel Jequunu e SISSE 58 29 19 4 JE LT BYessg JeuapeqselAA Xejo op NOWHOAL 2 UNOD 412 MID Jene sMeN NO HO3 L 9u 20 2511 SseJppy 943 uo 12 3 3nd qof NOY HDIL 940nue eui 3noqe
42. ep it always at a safe place for example in the carrying case Cleaning The measurement head with the optical system is sealed against dust and dirt Take care that the visible open measurement aperture is always free of dust You can clean the measurement aperture with oil free clean compressed air and a brush used for cleaning photographic equipment For easy cleaning the aperture can be taken off from the measurement head by unscrewing two screws with a special TORX T6 screwdriver which is part of the package of a spare aperture set Clean the device casing and the display window only with a soft cloth and a non aggressive plastic cleaner Never use alcohol or chemically aggressive solvent based cleaners which can destroy the surfaces The same procedure is valid for the white standard which is integrated in the charging console If the white standard should be defective it has to be replaced completely Should the display window show small scratches these can be polished out with special display polish greases as they are e g available for mobile phones and other electronic equipment as well The charging contacts at the bottom of the device and on the charging console can be kept clean with a cotton bud soaked with metal contact spray Please do not stick any labels at the bottom of the device This could lead to faulty measurements because the direct contact which is important for the correct opti cal field of depth
43. finder with tolerance circle Sample bold point The current selected value is marked in white 3 Color samples and references are directly imported into PhotoLab by making measure ments with SpectroDens having it connected to the PC via the USB cable Furthermore color values and complete color books from the device memory or out of the PC color library can be selected and Manual TECHKON SpectroDens Chapter 3 SpectroConnect PhotoLab Guerre Bargraph Cerbficacon Chart Tabla view Job Pigs tate es E i IES SE 765 200 HE 400 2545 70608 HEE 2520 200 28001 HEE 9551 2008 HES Bc 28 00 2004 HES pO HS LIE 26 01 2008 HES LEE 002071000 HE 26491 2 00 L 1449 be moved by drag and drop with the mouse pointer directly to the center of the display where the L a b color circle is A pop up window will ask if the values should be used as sample or as reference values 4 A mouse click on the program symbol will start the plug in PhotoLab within the SpectroConnect environment Page 71 PhotoLab Colercirde Basgeaph Quality Certification hat ve Job BE nune Hi DOF ABS 5 de ER Ga 3 a BE e o a Proba 1 14 06 2010 Probe 2 14 04 2810 Erbe 3 14 08 2010 Probe_4 1
44. fter can be corrected by pressing the all measurements have been performed the total result will be displayed SpectroDens recognizes the version 2 as well as the version 3 of the media wedge by the different number of reference values In connection with the Windows software SpectroConnect there is a plug in module available which allows analyzing the measured data in detail and gives the possibility to print a report see chapter 3 10 Page 53 Average values From a series of single measurements Average values can be calculated and displayed This function may be used when the surface of the sample has no even dis tribution of color In this case measurements at different locations can be made which will be calculated to one significant mean value By selecting the soft key with the average symbol a pop up window will appear where Average measurement can be set started and canceled Start Average measurement Here the number of single measurements stop Average measurement which will be calculated to one average value Number of measurements E is set The maximum number of single mea surements is 9 Star Average measurement Now activate Start Average measure Stop Average measurement ment Number of measurements 4 In the central window there is shown how many single measurements have been taken After the last single measurement has been taken the resulting average value will be displayed an
45. gure C TECHKONTCS300CA M Y 5 0 3 As a result the so called Slur Doubling factor in is displayed 1 46 67 1 60 7 0 is the best achievable factor meaning the dot transfer is perfect the horizontal and vertical lines of the measurement patches have the same thickness and that neither slur nor doubling effects are present Values up around 5 76 still are acceptable values higher than 10 indicate significant geometrical errors in print due to slur or doubling effects There are no standard values for the maximum allowable factor Manual TECHKON SpectroDens Chapter 2 Measurement functions Page 37 Density graph The function Density graph enables the exact display of density values for any spot color Usually the standards define density filter characteristics only for the process colors Cyan Magenta Yellow and Black Thanks to the spectral measurement of SpectroDens a virtual spectral density characteristic for any spot color can be ob tained The great advantage is that the process control of spot colors can now be as easily achieved as known from the four process colors In the following example a measurement has been made on a blue spot color The density graph is derived from the re mission spectrum and represents the density spectrum for wavelengths from 400 to 700 nm The peak of the curve displays where the spectral density value has to be taken In this
46. h can be stuck on the proof or a detailed report of the measurement values can be printed out Manual TECHKON SpectroDens Chapter 3 SpectroConnect Mediawedge Analysis Job TECHKON Inspector BA Date 13 05 2008 Proof printer Inkjet Remarks dE dH Max Tolerance Remarks TECHKON Print Substr 1 0 3 0 OK www techkon com Mean 3 1 3 0 OK Max 7 1 6 0 OK Primary colors 6 6 5 0 OK Primary col dH 1 3 2 5 OK Comp grey dH 1 1 1 5 OK Printing and measurement conditions Akzidenz Offsetdruck Papiertyp 1 oder 2 d h ol oder matt gestr Bilderdruck 115 g m2 Positivkopie Tonwertzunahmekurven A CMY und B periodischer Raster 60 cm Vollt ne und Tonwerte nach ProzessStandard Offsetdruck und ISO 12647 2 2006 1 nach ISO 13855 1 CIELAB Werte Messgeometrie 0 45 oder 45 0 2 Beobachter D50 jedoch Unterlage After the import of the media wedge a short protocol will be generated and can be printed on a self adhesive label with a Dymo label printer gt TECHRON Seectra Connect Fle Edt QChwacterstie curves Vew M gt 2 MediaWedge gt d 9 Deia Print settings E Date Printing conditions Cremmercial grirting paper type 1 or 2 Le g mat coated wt 115 pedbwe actieg plates periode eee Gym s ch and ay M to 150 12647 2 2004 1 Probe 3 14 06 2010
47. he last page of this manual That way we can keep you updated about product news Please visit us as well on the internet at http www techkon com You will find useful information about the complete product range and new software versions Do you have any suggestions for improvements or do you require information that goes beyond the contents of this manual We will be glad to hear from you Your sug gestions or questions make an important contribution to the continuous optimization of our documentation and products Your TECHKON Team Content Chapter How to use SpectroDens alk Product descriptos uidi ed eit 5 1 2 Packing ett 8 1 3 Design of 9 1 4 Working with SpectroDens eese I 5 Care and maintenance 19 Chapter 2 Description of measurement functions 2 Measurement functions of SpectroDens Basic 26 2 2 Additional functions of SpectroDens Advanced 33 2 3 Additional functions of SpectroDens 44 2 4 Storage of measurement values esee 55 2 5 Gray Guide function US version only 58 Chapter 3 How to use the Windows software SpectroConnect 3 1 Software description esee tnnt 64 3 2
48. he display of dot area or dot percen tage in 76 two measurements have to be made First the solid density patch and then the patch which is in this example a 80 patch The resulting dot percentage is in this case 9276 the referring dot gain is 1276 9276 80 12 Should solid density value be displayed instead of the desired dot percentage value then the density measured first was signifi cantly higher than the second one In this case we recommend to delete the displayed value by pressing the red Escape button and to measure again When making a measurement on a gray balance patch the referring density values for all four process colors are shown in a bar graph The values for Cyan Magenta and Yellow should be in close range to each other to ensure a neutral gray balance without a color hue It is important that the gray balance patch on which the measurement is taken comprises the right values to achieve a neutral gray when printed correctly The process standard ISO 12647 for offset print defines the values as C 50 26 M 4026 and Y 40 26 The value for Black indicates how dark the gray color is The higher the value for Black 7 K the darker the sample Page 27 p DELTA ON Folarizing filter White Reference Density Filter Dotgain Setup Printing Curve Setup ule Nielsen coefficient 100 Trapping formula LPreucil um Illuminant Si Tole
49. he installation was finished successfully you can connect the device with the USB cable to the computer Page 64 Manual TECHKON SpectroDens Chapter 3 SpectroConnect 3 3 Overview The application will be installed in the Windows program files section in the folder TECHKON GmbH TECHKON SpectroConnect Software symbol SpectroConnect After starting the program the main screen Compare Colors will appear It is divided into four logical segments On the left side you see the memory content of the connected device in the center the active program module on the right side the color library which is stored on the PC and in the section at the bottom a bar which lists all available and selectable program modules PEE Cr D e Se E D Compare colors 5 L 4 T 6 P Color library Compare cobra Cader laeso e qi 2 Wes Sample calor Reference calor Se ene Das mik Xx ner Tort E GE Comparison Tapai Eeer poca ORCA c i repe 3 abt vii Hack fie ETE D EE EE HE EE qx dL 0 68 High E HE LE SEL t da 1 71 Eu MM HFE db 0 92 HENE HEISE Ze ft 20608 Hac 78 Dt 2X0 dE CIELAB 2 05 206 The menu bar includes functions known from standard Windows applications They comprise Ne
50. hen the function is deactivated the device will always show the density values and the dot area will not be calculated automatically 5 The LCD Display Contrast can be turned darker or brighter 6 Sets the menu Language of the device 7 8 All measurement values get a Time and Date stamp This information will be visible when the data is transmitted to the PC software SpectroConnect 9 For the measurement of densities the Display format CMYK can be selected The device can display two or three decimals The information in the chosen format is car ried out in all density modes 10 711 The functions Density adjustment SLOPE and Absolute white reference values are for the internal device adjustment Attention The device is correctly adjusted by the factory and changes of these settings should be made only in special cases see page 23 24 Setting of the Density adjustment SLOPE Manual TECHKON SpectroDens Chapter How to use SpectroDens b 12 A Reset puts the device to factory settings Attention All stored measurement values and a recently made calibration will be deleted and should therefore be saved on the PC if necessary by using the software SpectroConnect Only the factory set calibration values are still valid A reset can make sense if SpectroDens does not work properly reset all settings and memory values Displa Density adjustment SLOPE 13 The information of Devi
51. hey can be uploaded with the Windows Paper type 4 Paper type 5 software SpectroConnect Color book After selecting the right color book load it in Load Reference from Color book Search for closest color Calor book Reference memory the reference memory Page 48 Manual TECHKON SpectroDens Chapter 2 Measurement functions Activate the option Search automatically in the reference menu Then the measurement function InkCheck ColorGuide displays the spot color of the color book which is closest Search automatica to the measured color Sample First a calibration on paper white has to be made Position the device on the paper white and confirm the request to measure the Flease paper white by pressing the green measure gt E pacer hits ment button Now the device is ready for measurements on solid color patches In this case a yellow patch was measured Density trend It is recommended to in crease the density by 0 11 o Hs Color deviation The color distance to the 2 4 8 2 1 180 reference is 4 8 AE After following the den RE 0 9 5 1 29D sity trend it can be as low as approx 0 9 AE Sample HKS 2 A closer color match will be limited because the paper and ink characteristics do not al low to get closer to the reference standard M Sf MEN P AME Please note that the density values are ob 050 2 fnoPOL ABS tained without the polarizing filter activated and
52. iencies caused by inexact geometrical transfer of the image from the plate to the paper can by evalu ated Slurring means that the printed dot deforms from the transfer of the printing plate to the rubber blanket or from the rubber blanket to the paper The effect of doubling will be present when a printed dot is transferred a second time with less intensity geometrically slightly offset This ghost image is caused by ink being re transferred to the rubber blanket which should have stayed completely on the printed paper To make the slur and doubling measurement possible it is necessary to have on the color bar vertical and horizontal lined patches with identical line thickness as it is the case with the print control strip TECHKON TCS Three measurements have to be carried out The first measurement on the vertical lined patch in this case of Magenta C TECHKONTCS300CA C M Y 5 0 2 The second measurement on the horizon tal lined patch of the same process color After the measurement of the horizontal lined patch the dot area of the patch is calcu lated and stored see the following figure C TECHKONTCS300CA C M Y BAL M Y 4 2 36 Manual SpectroDens Chapter 2 Measurement functions 3 The third measurement on a vertical lined patch After the measurement of the vertical lines again the dot area of the patch is calcu lated and stored see the following fi
53. illed up with measurement values the already existing values shift with every new measurement one step to the left and the first value falls away The reference line marks the average value of all measurements The tolerance area is defined with 0 10 density The average value is recalculated after every measurement Manual TECHKON SpectroDens Chapter 2 Measurement functions Page 39 p DELTA Mode ON Folanzing filter Reference Density Reference Setup REF 2 Dotqain setup Printing Curve Setup Y ule Nielsen coefficient 1 00 Trapping formula e Illuminant 403 0 02 0 22 40 03 0 00 0 01 0 03 002 0 32 0 03 0 02 0 03 0 00 001 0 05 0 01 In ExPresso Mini the Delta Mode can be activated Taken measurements will then be compared to reference densities pre set in the Density Reference Setup The reference data and the result will be dis played The reference line is always the refer ence value and the corresponding tolerance The figure describes the situation inside and outside of the tolerance and the situation outside of the graphic space Page 40 Manual TECHKON SpectroDens Chapter 2 Measurement functions CIE L a b The previously described measurement functions all were based on densitometry Thanks to the spectral performance of SpectroDens it is possible to calculate and display colorimetric values as well Measurements in color
54. image shows how to connect the plug of the AC adapter with the charging console The AC adapter can be used universally for 100 240 V and 47 63 Hz Use only the original TECHKON SpectroDens AC adapter The use of other power sources is hazardous There are three adapter plugs for different countries To change an adapter plug just pull it off the AC adapter and push in the new one Make sure it is connected firmly AC adapter with three different mains plugs Device in the state of charging Page 10 Manual TECHKON SpectroDens Chapter How to use SpectroDens 1 4 Working with SpectroDens Switching on and off SpectroDens is switched on by pressing the green measurement button It is immediately ready to measure In this state power consumption is very low If no button is pressed within five minutes the device will switch off automatically Switching it on again with the green measurement button will show on the display the last measurement done There is no button to turn SpectroDens off Since hardware version 2 the display is provided with backlight which turns on auto matically when the device is started Charging The battery status is displayed as a battery symbol in the lower left corner of the LCD screen when the unit is turned on When the battery turns empty the battery symbol starts to flash In this state several measurements still can be obtained but it is time to put it on the charging console to avoid a
55. imetry modes have the advantage of an absolute description of color based on characteristic values Printing Frinting Plate slur and Doubling Density graph ExPre nm CIE amp Le CIE Color Circle CIE XYZ Remission curve L 100 The thematic separation between densito metric and colorimetric functions is displayed by a dotted line within the measurement function window CIE stands for the interna tional color institute Commission Interna tionale de l Eclairage which publishes the standards for colorimetry The most popular color system in the print ing industry is the CIE L a b color space Every color is precisely described by three values The L value stands for the luminance and can have values between 0 a theoretical absolute Black and 100 a theoretical ideal White The a value describes the color value on the Green Red axis a Green a Red and the b value the color value on the Blue Yellow axis b Blue b Yellow Example Colorimetric L a b measurement on a blue sample The blue color has a lumi nance of L 41 5 and a low portion of Red a lt Manual TECHKON SpectroDens Chapter 2 Measurement functions Page 41 In colorimetry the white reference is absolute in contrary to densitometry where the white is usually referenced to paper white Before making colorimetric measurements an absolute white calibration has to be carried out by placing S
56. inks CMYK are documented 050 2 noPOL ABS White Reference Density Filter Dotgain Setup Printing Setup Yule Nielsen coefficient D OO Trapping formula Freue E llluminant Observer 50 Check Setup Type 50 Dot frequency Dot value 1 Dot value 2 Reterence Please ka measure paper white bla 150 lpi ab 1 07 ISOPTi black 150 lpi First the ISO Check Setup in the menu section of the measurement conditions has to be set You can edit the paper type the dot frequency and two dot values In the next step the paper white must be measured When the message for measuring the paper white is displayed please confirm it by pressing the green measurement button When the AL a b values are marked with checkmarks the paper white is in accordance with the ISO standards Page 44 Manual TECHKON SpectroDens Chapter 2 Measurement functions ISOPTi black 150 lpi 0 03D Kai amp E 1 D bu F aE 150 PT1 black E When the solid density is measured the compliance with the tolerances is checked In this example the measurement has been taken on a black solid patch At the same time the recommendation how to adjust the density is calculated The smallest possible AE value is calculated in advance The measurement function ISO Check recognizes whether the given tolerances can be achieved with the set of print ink in use If
57. ity 0 01 D 0 03 CIE AE a b eee ENS Inter instrument agreement 0 012 0 3 CIE AE a b Display High contrast backlit LCD graphic display 240 x 160 pixels l6 gray levels contrast adjustable Power supply Rechargeable Ni MH battery regulated recharge via charging console with A C adapter 100 240 V 47 63 Hz Up to 10 000 measurements per battery charge Battery level control Communication interface USB Dimensions 190 x 65 x 65 mm Weight 520 grams Available Accessories Small apertures UV Cut filter Print control strip TCS Digital Software modules PhotoLab and Ugra Fogra Media VVedge evaluation for SpectroConnect Delivery contents see page 8 Configurations see page 7 Specifications can be subject to change without notice Specifications valid for standard device with 3 mm aperture All mentioned trademarks and copyrights are recognized SpectroPlate SpectroDens SpectroJet SpectroDrive SpectroCheck InkCheck and TECHKON are registered trademarks of TECHKON GmbH Manufacturer certificate applicable for ISO 9000 documentation Device Serial Number Manufacturer Certification Maintenance Warranty Recycling Spectro Densitometer TECHKON SpectroDens N M zu TECHKON GmbH e Wiesbadener Str 27 D 61462 K nigstein Telephone 49 0 6174 92 44 50 Telefax 49 0 6174 92 44 99 E mail info techkon com http www techkon
58. le 0 0 30 d colon gt 16 07 2007 Vean vere 10 dg Puman colon amp 16 97 2007 Ms value 10 60 lt Corp 4 1 9 n Bue 8 07 2040 mesacaremertt in the dece memory wey 6 07 2207 50 Peper 1 88 18 00 2040 Name Complete T ake mosnseneri 24 01 2004 L 26 01 2004 6t 25 01 2004 2 ee vr s 180 25 01 2004 7 26 01 2704 gt gt 2 Mart 5 22 26 01 2004 FL 23 25 01 2004 kee 240 4 01 2004 FOGRA J Mrs 26 4 01 2004 Ae 20 01 2004 mS JK 01 2004 Paper 118 MES 28 5 01 2004 eper type 28 lt wer type 200 gt D en A Paper type 296 01 2004 Paper tyge 5 ER KE 01 2004 sx 25 01 2004 lt MEX ter t d 5 e gt 5pectreDeca Preesum sD ur Export xx oL ab Color Catcher Compare M Spectre wed HRS Selection of the media wedge version you will find the version number on the printed test element 2 With SpectroDens Premium there is a media wedge feature within the device as well Measurements can be made remotely without a connection to the PC When the device gets connected later the measured data will be uploaded Page 74 Lait 14 06 2010 3 Selection of reference values 4 Overview of measurement results 5 Optionally a short protocol can be prin ted on a self adhesive label with a Dymo label printer whic
59. lected and displayed by using the Arrow and Enter Reference_2 05 09 buttons Heierence 3 10 01 04 05 09 Heference 1 10 01 04 05 03 d 4 Manual TECHKON SpectroDens Chapter 2 Measurement functions Page 55 3 By activating Save automatically all fu ture reference measurements will be stored automatically Search automatically k Delete 4 By activating Search automatically the Delete closest matching reference color when mak ing a sample measurement will be displayed This feature is active in the sample mode with DELTA Mode on Reference 1 10 01 04 05 03 8 Reference 2 10 05 09 Reference 5 Delete will remove selected color values from the list and A 6 Delete all will remove all values in the All references list deleted Sample memory The Sample memory has almost the same functions as the reference memory Here up to 250 sample color values can be stored However the sample memory is a ring memory i e maximum 250 samples can be stored before the first sample will be overwritten by a new measurement The pop up window opens by pressing the Enter button with the device in sample mode JOVE cave Show values cave automatically Al Delete Delete all show values automatically 4 Delete Delete all sample saved 2 All samples deleted Sample 11 23 10 05 09 Sample 2 11 23 10 05 09 Sample 3 Page 56 Manual TECHKON SpectroDen
60. lue highlighted in red indicates an out of tolerance sample Rename master Delete sample ENTF 4 The black circle line indicates the tole rance limit of the AE region If the black pointer reaches into the outer segment of the circle the tolerance has been exceeded 5 Enlarged view of the tolerance circle 6 Display of the color components AL Aa and Ab Page 72 Manual TECHKON SpectroDens Chapter 3 SpectroConnect PhotoLab settings When you open the pop up window PhotoLab settings in the menu bar of the progam module PhotoLab you can select and edit three areas TECH de d Spectra Canne PhotoLab d Banach Quality Gertfication Chart Table view 3b DEI n Gsm T Ia Tas ob be 357 v Rm Probe 2 19 06 2010 Bl Seck D veel SE rel Gm mar 7 Euri X Settings General settings Region a b ads This is the window for setting the dimensions di da db mima of the L a b color circle and the AL a b color deviation Save as delauk 2 Tolerances In this window the tolerances for the color deviations are defined and the size of the tolerance circle is set V Number measurements for average function 3 Mean values Number measurements reference _ P It can be appropriate to take several single Number measurements samples 5 measurements on
61. nsure that the density values are in direct ratio to the ink thickness which is applied on the paper When there is a change the paper type a new calibration has to be done Only in a few cases density measurements are referenced to an absolute white standard A calibration is as easy to carry out as a measurement Select the soft key Calibra tion and place the device with the measurement head on top of an unprinted area of the paper sheet The calibration can be started now by pressing either the Enter button or the green Measurement button After one second there will appear a win dow with the message that the calibration has been done The device is now ready for measurements The message window will disappear with the next measurement During the calibration process always take care that the instrument is on a flat stable surface and that the material backing the paper is the same as for the following mea surements white gray or black When the paper sample is printed on both sides it is recommended to use a black backing material in order to avoid misreadings due to color shining through the back of the opaque paper Page 18 Manual TECHKON SpectroDens Chapter How to use SpectroDens 1 5 Care and maintenance SpectroDens is a highly precise optical instrument It is designed to work in harsh industrial environments However it should be handled with care Avoid mechanical shocks heat dusty or humid environments Ke
62. nt Manual TECHKON SpectroDens Chapter 2 Measurement functions In this example a solid Magenta patch was measured The solid density is M M 1 42 But why are densities for the other colors shown as well Shouldn t they have a value of 0 These are the so called partial densities No printing ink is 100 spectrally pure There will always be partial colors besides the actual main color In this measurement function measurements can be compared to reference values as well In this example the reference value was not taken from the reference memory but was measured just before by putting the soft key to Reference First select via soft key Reference and make a measurement on a patch which will be the future reference patch 2 Now activate via soft key Sample and make a measurement on a sample patch A triangle symbol in front of the measurement value indicates that delta values difference between reference and sample are shown Future sample measurements will be com pared to the once measured reference values as well 3 Now activate the DELTA Mode by selecting the triangle symbol The function Densities CMYK is especially suitable for the measurement of multicolored composed CMYK colors e g in logos to find out the reason for possible color shifts Page 29 Dot Area For the function Dot Area dot percentage two measurements have to be carried out First a measurement on a solid
63. only and such statements do not represent trademark infringement All registered trademarks are recognized TECHKON products and product names are registered internationally under several intellec tual patents and trademarks Specifications can be subject to change without notice Version 2 4 June 2010 You can reach us at the following address TECHKON GmbH Wiesbadener Str 27 D 61462 Konigstein Germany Telephone 49 0 6174 92 44 50 Telefax 49 0 6174 92 44 99 E mail info techkon com http www techkon com Welcome We welcome you among the worldwide community of users of TECHKON products We are happy that you have selected this high quality measurement instrument It will be a valuable tool for your day to day quality control tasks With this manual we invite you to learn how to use SpectroDens The manual is divided into three chapters Chapter How to use TECHKON SpectroDens Chapter 2 Description of measurement functions Chapter 3 to use the Windows software SpectroConnect For the first steps we recommend to read chapter particular paragraph 1 4 You will be fascinated that after only ten minutes you will know how to work with SpectroDens The second chapter will show you detailed insight into the measure ment functions and chapter 3 is about the Windows software SpectroConnect which is part of the package Please get the device registered by using the detachable registration card which is t
64. onnect 3 7 Software module SpectroCheck TECHKON SpectroCheck optionally available is a color reference used to check the measuring accuracy of the SpectroDens advice Connect SpectroDens and SpectroCheck via the USB cable with the computer The program module SpectroCheck will now lead you step by step through the check ing procedure of the measurement device The information whether the device cor responds to the technical specifications can also be printed out SpectroCheck ME Color library Dee ir Tech 1 14 06 2010 2 14 06 2010 3 14 06 2010 3 15 06 2010 wm m rix 700 S it 1 5 104 s 76 06 2004 ES 46 26 00 2004 e s st Dus SAT ns ec San gie low 210 7 NIE 16 07 2000 s 25 08 2004 4 1 15K dun CN d Phe aie conne cb the color sefeomnce with te compete va tee USD cable and preis Contre T 2 05 2004 C RI 02 CoM 18 20 2010 2004 Grey Comey 16 0 2007 ees ite type 1 88 18 02 1010 s ik 24 06 2004 HS 15K 26 00 2004 s 168 gt no 186 pes tik 82 Start HSR 25 00 2004 3k 6 00 2004 OFAN Sr 2008 HAN 5 MM Paper type 1 18 Spr Pacer type 200 25K 25 00 2004 Paper type 218 E acer type 4 00 res ME
65. ons 5 Remove the lamp socket by unscrew 7 The assembly works accordingly to the ing two screws and pull the plug disassembly Do not forget to connect the grounding contact with one of the screws 6 The lamp can be replaced by vertically Do not pull the screws too tight in order to pulling it from the measurement head avoid damaging the threads When putting in the new lamp fit in the plug correctly Page 22 Manual TECHKON SpectroDens Chapter How to use SpectroDens Device adjustment Should SpectroDens do not work properly first check if all instrument settings and measurement conditions are set correctly Especially the settings of the Density adjustment SLOPE and the Absolute white reference values influence the measurement result pra K i TP Density adjustment SLOPE Absolute white reference values Next perform a white calibration on the white standard which is integrated in the charging console and try again to perform measurements Setting of the Density adjustment SLOPE With the SLOPE correction values it is possible to adjust SpectroDens to the density values of other devices SpectroDens INFO Sound 2 Auto Paper White Calibration Measurement Automatic Dens Display Contrast Language Date Time Display format CMYK Cr AN MAGENTA YELLOYVY BLACK Make SLOPE calibration Reset SLOPE coefficients CYAN ifs AL MAGENTA TOU YELLOW
66. pectroDens Advanced and Premium supports the G7 calibration of presses and proofs developed by the IDEAlliance International Digital Enterprise Alliance CIE Color Circle CIE XYZ Gray Guide Remission curve ISO Check InkCheck ColorGuide CIE L C h ab CIE 050 2 noPOL ABS Reference Density Filter DIN TES Density Reference Setup Dotgain Setup Printing Setup Yule Nielsen coefficient D OO Trapping formula llluminant Observer Guide Setup d Auto Set mino T Paper type 1 black backing Paper type 2 black backing Paper type 3 black backing Paper type 4 black backing Paper type 5 black backing Paper type 1 white backing Paper type 2 white backing Paper type 3 white backing Paper type 4 white backing Paper type 5 white backing The Gray Guide mode can be selected in the list of measurement functions available in the US version of SpectroDens Advanced and Premium In the Pop Up window of the measurement conditions the item Gray Guide Setup can be chosen Now target values can be edited and printing conditions can be selected Edit the target values for SC HR and HC for K and CMY For Auto Set a b use half a b values of measured paper as target value For the comparison to the right ISO refe rence values the used paper type and backing must be selected Page 58 Manual TECHKON SpectroDens
67. pectroDens on the charging console and calibrating on the round white ceramic standard 050 2 noPOLs ABS White Reference Auto Density Filter DIN TE5SE Density Reterence setup Dotqain setup Printing Curve setup Yule Nielsen coefficient 100 Trapping formula Preucil Illuminant Observer Colorimetric measurements can only be compared when the measurement conditions are the same e Polfilter off White reference Absolute e Illuminant 050 Observer 2 When selecting Auto in the polarizing filter setting there will be automatically the polar izing filter inactivated when making colori metric measurements The color distance AE describes how close two colors match A value of 0 means that they are identical AE color differences in the range of 5 can be seen by the human eye when reference and sample are close together and observed at the same time 4 DELTA ON Color comparison Reference Sample 2 79 Sample Reference Gas ___ 050 2 fnoPoL ABs For measurements of the color distance of two different colors activate the DELTA Mode first by selecting the soft key with the triangle icon Now two measurements are made Reference measurement 2 Sample measurement The color distance AE is displayed with two digits Additionally the components AL Aa and Ab can be seen Page 42 Manual TECHKON SpectroDens Chapter 2
68. quation PASS FAIL tolerance Media Wedge Setup CIELAB AE CIES4 AE 2000 Page 50 Manual SpectroDens Chapter 2 Measurement functions Metamerism Metamerism is the visual phenomenon that two colors match under certain light conditions and differ under different light conditions Colorimetry offers the possibility to detect this effect by measuring the color dis tance between the two color samples under two exactly defined light sources The result of this operation is the metamerism index For the determination of the Metamerism Index there are two measurements to be made reference measurement which refers to illuminant condition D65 2 A sample measurement on the sample patch As a result the color distances in AE a b for illuminant conditions C 050 are shown Identical color impression under light condition Color deviation under light condition 2 caused by metamerism Manual TECHKON SpectroDens Chapter 2 Measurement functions Page 5 Whiteness Yellowness Whiteness and Yellowness indices are quality parameters important for the paper industry SpectroDens Premium will display the whiteness index according to CIE and the yellowness index according to American standard ASTM D 1925 The values mean the following Whiteness index Values are usually between 90 and 120 for white paper The higher the value the whiter
69. r extended trapping calculation according to Professor Ritz and Felix Brunner which ensure a better comparison between C M M Y and measurements An alternative determination how well two separate colors overprint can be checked with a colorimetric function such as the L C h feature where the L and C values give the information of the printable gamut Page 32 Manual TECHKON SpectroDens Chapter 2 Measurement functions 2 2 Additional functions of SpectroDens Advanced Printing Curve The measurement function Printing Curve displays a complete transfer curve which describes how screen dots and tonal values are transferred during the several process steps of the reproduction process Polarizing filter White Reference 2 Density Filter DIN 16536 x Density Reference Setup REF s eT 1 00 Trapping formula Illuminant Observer Tolerance 150 PC 1 2 z Dot frequency 15012159 95 190 85 80 DOS EN 100 60 LE apierklasse 1 2 a liem Manual TECHKON SpectroDens Chapter 2 Measurement functions First make the required settings in the Print ing Curve Setup Tolerance range can be set according to standard values in this case the ISO Paper Class 1 2 was selected 2 Dot screen frequency only relevant for the display of tolerance values 3 Increments of the wedge to be measured e g 10 steps In the fi
70. rance Tolerance MAGENTA Tolerance YELLOW 008 Tolerance BLACK 0 08 In DELTA Mode comparison mode the measured values are compared to reference values The mode is activated by navigating to the soft key with the triangle symbol and selecting it In the example on the left side a Yellow patch was measured The measured solid density is 1 37 This is 0 08 less then the set reference target density of Y 1 45 The measured value is outside the limits of the set tolerance of 0 06 Therefore it is marked with a cross symbol in the round icon A checkmark symbol would be shown in case of a measurement within the tolerance limits The setting of reference values and toler ances is done in the menu under the item measurement conditions In the Density Reference Setup up to five data sets REF 5 for reference target densities can be edited As a preference the reference densities recommended by the German Printing and Media Association bvdm for the five defined paper classes are already pre set The tolerances define the lower and upper limits around the reference values In this example for Yellow 1 45 0 06 1 51 1 45 0 06 1 39 Page 28 Manual TECHKON SpectroDens Chapter 2 Measurement functions Densities CMYK In the measurement function Densities CMYK all four partial densities for Cyan Magenta Yellow and Black are displayed Patch for sample measureme
71. rst step 100 solid patch is mea sured SpectroDens recognizes automatically the color and displays the solid density In this case D 1 47 for Cyan The double arrow in the upper left corner indicates that the next patch to be measured will be a 90 Now all other pre set patches can be mea sured on the measurement wedge Page 33 Now the corresponding current dot area is indicated in the lower right section of the display In this case 94 1 dot area at 90 76 dot percentage results in dot gain of 4 1 76 The shaded area close to the curve shows 3 the tolerance range The curve should be within this area 20 40 za e 100 ISO Papierklasse 1 2 601 A wrong measurement can be easily deleted by the red Escape button and the device will be ready again to read the patch correctly With the Arrow buttons the vertical dotted cursor line can be navigated to display previ uu ous measurements Printing Plate Beside energy and focus of the laser dot gain is the most important information which has to be checked in plate exposure Special plate measuring instruments working with video analysis have been developed for this application for example TECHKON SpectroPlate Compared to densitometers and colorimeters they offer big advantages Nevertheless it is basically possible to make measurements with a densitometer on a printing plate In doing so one should regard the following Variation
72. s Chapter 2 Measurement functions ASN Color book memory Additionally to storing reference and sample color values complete color books can be managed A color book is a folder which can hold up to 100 single color values An example are the Hks9 spot color collections which are included in SpectroDens with the software package SpectroConnect New color books can easily be edited and transferred into the device Up to 10 color books can be stored in SpectroDens there is no limitation of storing color books in the Windows software SpectroCon nect Color bo ok type Load Reterence tram Color book Search for closest color Colorbook Reference memory IU Faper type 3 Faper type 4 Faper type 5 Green C Y The soft key with the color book symbol opens the window for the settings of the color book memory Here a color book is selected from the list 2 A single color value from a color book is loaded into the reference memory 3 Searches for the closest match in a color book compared to a sample value 4 All color values of a color book are trans ferred into the reference memory Attention All present values in the refer ence memory will be overwritten by the new values from the color book Manual TECHKON SpectroDens Chapter 2 Measurement functions Page 57 2 4 Gray Guide function US version only The measurement function Gray Guide which is only part of the US version of S
73. s can be upgraded by post purchase to higher performance levels by program upload using the software SpectroConnect The following features are part of the three different models SpectroDens Basic Automatic density Densities CMYK with reference values Dot area Dot gain Print contrast Gray and color balance Ink trapping to Preucil SpectroDens Advanced as SpectroDens Basic but also features Characteristic printing curve Printing plate measurement dot area to Yule Nielsen Slur and doubling value e Spectral density for spot colors Trend function ExPresso Mini Density spectrum Ink trapping to Brunner and Ritz CIE L a b CIE color circle CIE XYZ AE a b Remission curve Color library Gray Guide according to Gracol G7 US version only SpectroDens Premium as SpectroDens Advanced but also features SO Check according to ISO 12647 InkCheck ColorGuide evaluation of spot colors CIE L C h ab CIE L u v CIE L C h uv CIE xyY DIN Lab99 AE cmc AE CIE94 AE CIE2000 Metamery index Whiteness yellowness Pass Fail tolerance average Ugra Fogra media wedge evaluation Manual TECHKON SpectroDens Chapter How to use SpectroDens Page 7 1 2 Packing list Contents of delivery Measurement device SpectroDens Carrying case Charging console with integrated absolute white standard AC adapter with universal plugs for Europe UK and USA This manual with
74. s in the coating of the printing plates may result in strong influences on the measurements especially in the crucial range under 10 Variations of 0 02 D can cause errors to 676 The values measured with a densitometer do not correspond with the geometric dot area due to the fact that the densitometric measurement process is subject to optical influences which increase the measurement value Therefore densitometers measure always a higher value than video analysis devices But the measurement value of the densitometer can be taken as a reference value for the tonal value adjustment For the measurement of the zero point 1 the solid patch 2 and the screen patch 3 you should select areas on the printing plate which are located as close as pos sible to each other Page 34 Manual TECHKON SpectroDens Chapter 2 Measurement functions The measurement feature Printing Plate measurement allows reading values di rectly on printing plates The process is comparable to reading on printed paper Before taking a measurement it is important that the rubber coating is washed off the printing plate because otherwise light gets lost and the measurement result will be distorted In addition a correction factor the so called Yule Nielsen factor can be set which is dependent on the material characteristics of the printing plate Usually the plate ma nufacturer will furnish the information about the factor for the different plate t
75. ssary 0 22 PT1 black Page 62 Manual TECHKON SpectroDens Chapter 2 Measurement functions Detected color Measured density AE difference compared to ISO reference Indication in out tolerance Measured L a b value Ov M AE 4 114 d 5 Lk 54 55 a 35 6 b 52 1 6 PT1black 150 paper type and type of backing Detected color Direction of adjustment Recommended adjustment Detected patch type Target value M 4 SC k 5 1 06 6 PT1 black 150 paper type and type of backing Color Recommended adjustment Adjustment as bar graph CN Direction of adjustment dark active 5 M light inactive AHR 0 02 oa 6 9 3 5 6 5 Detected patch type 7 PT1 black 6 Differences of HR cmy and a b values QrayGude D502 noPoL ABs compared to target values 7 ISO paper type and type of backing Indicator for neutral density ND CMY Direction of adjustment Recommended adjustment Detected patch type Target value Mo 4 HC gt o0 20 6 1 black 150 paper type and type of backing Manual TECHKON SpectroDens Chapter 2 Measurement functions Page 63 Chapter 3 How to use the Windows software SpectroConnect 3 1 Software description The supplied Windows Software SpectroConnect allows to transfer measurement data to the PC and to make device specific settings from
76. ssible a hardware reset has to be carried out The battery plug has to be unplugged for a couple of seconds an then to be connected again How to unplug the battery is described on page 21 Warranty The warranty for TECHKON products is 24 months starting with the date of pur chase The invoice is the certificate of warranty The warranty is invalid if the damage is caused by inadequate use of the device Should a TECHKON product do not work according to the specification please contact us before sending us the device In most cases we can solve the problem over the phone or via E mail Inspection intervals TECHKON SpectroDens is maintenance free We recommend to validate the complete functionality of the devices in a 24 months time interval in the TECHKON service center Please send the device always securely in the carrying case with complete accessories For a flat fee the device will be cleaned checked and re calibrated In case a repair or exchange of components should be necessary we will inform you in advance Manual TECHKON SpectroDens Chapter How to use SpectroDens Page 25 Chapter 2 Description of measurement functions 2 1 Measurement functions of SpectroDens Basic Automatic Density SpectroDens Basic comprises all functions related to density measurement A very practical feature is the Automatic Density mode By a push of the green measure ment button the relevant measurement values are displayed Depending on th
77. te standard which is referenced to measurements taken and certified by the German Institute for Material Testing Bundesanstalt f r Materialpr fung BAM The measurement device is manufactured according to the recommendations of the technical standards DIN 5033 part 1 9 CIE DIN ISO 16 536 part 1 2 and ISO 5 3 The accuracy of the device is checked during the manufacturing by spectral measurements on color samples which were measu red and certified by the German Institute for Material Testing Bundesanstalt f r Materialpr fung BAM The calculation of colorimetric values is according to the for mulas and tables of DIN 6174 DIN 5033 part 1 9 and CIE The calculation of densitometric values is according to the for mulas and tables of DIN 16527 part 3 150 5 3 and the hand book of standardization of the German Printing and Media Industries Federation Bundesverband Druck und Medien e V and Fogra Forschungsgemeinschaft Druck e V Date Signature D 61462 K nigstein EU Konformitatserklarung EC Declaration of Conformity D claration de Conformit de la CE Dichiarazione di conformita CE Hersteller TECHKON GmbH Manufacturer constructeur costruttore Adresse Wiesbadener Str 27 Address adresse indirizzo D 6 1462 K nigstein erkl rt dass die Produkte Declares that the products d clare que le produits si dichiara che il prodotto Typ SpectroDens Type tipo Verwendungszweck Farbmessungen Int
78. the PC The measurement values can be displayed on the computer monitor Color information is displayed colors can be compared and data can be exported into other software applications e g Microsoft Excel When using SpectroDens Basic the device has to be connected via the USB cable to the PC when working with SpectroConnect When performing a measurement with the device the value will be displayed immediately on the computer screen The models SpectroDens Advanced and Premium have an internal memory for up to 100 reference values 250 sample values and 10 digital color books which can contain up to 100 color values When connecting the device to the PC via the USB cable all stored values will be uploaded to the software and displayed on the com puter screen Of course the device can be operated as usual when connected to the PC The software requires a computer with a free USB port and a completely installed Microsoft Windows 2000 XP Vista or 7 operating system 3 2 Installation It is important to carry out the following steps in the right order to make sure that the USB device driver will be installed properly Make sure that the device is not connected to the PC Insert the SpectroConnect CD into the CD drive of the running computer You will find the CD at the back of this manual 2 The installation routine will start automatically Follow the steps of the installation until it is completed 3 Now after t
79. this will be taken into account and there will be auto matically the right filter setting 2 There are two possibilities for defining the White reference Density measurements usually are referred to the white value of the paper printed on Colorimetric measure ments refer to an absolute white reference Manual TECHKON SpectroDens Chapter How to use SpectroDens 14 Media Wedge Setup which is supplied as a ceramic tile on the charging console By selecting Auto from the menu there will always be the right setting according to the measurement mode which is selected 3 Depending on the regional technical standards different Density filter settings are required SpectroDens as a powerful spectro photometer has the great advantage that any filter specification can be exactly calculated out of the spectral data There is no limitation known from conventional filter based densitometers with fixed filters built in In Europe filter ISO E is to be selected as the standard filter Page 17 Menu Calibration Calibration Paper White Calibration done ee Prior to every series of measurements a calibration should be carried out After a calibration the device is long term stable however it is recommended to perform a calibration before starting a new measurement task just to be sure the device is working properly For density measurements the calibration is carried out on paper white This will e
80. ting order of the two Bop 51 5 gt The measured value is compared with the ISO reference and the difference is displayed as AE PT1 black If paper white or any other undefined patch is measured then all four densities are displayed simultaneously PT1 black Page 60 Manual TECHKON SpectroDens Chapter 2 Measurement functions K 1 23 1 08 1 23 1 2 SC cmy 1 01 PT1 black AHR 0 14 aa 7 6 ab 2 9 PT1 black HC cm 0 20 PT1 black If a gray balance patch is measured all four densities are displayed in a bar chart If the value is close to the SC cmy neutral density target it will be displayed with re commended adjustments SC stands for Shadow Contrast The HR my is detected as well The re commended adjustments are shown by the arrows and numbers HR stands for Highlight Range As soon as the value is close to the HC cmy neutral density target it is recognized and displayed HC stands for Highlight Contrast Manual TECHKON SpectroDens Chapter 2 Measurement functions Page 6l If a dot patch in black is measured close to the SC k target value it will be displayed automatically 5 0 93 PT1 black The HR k is detected automatically as well The arrows show the recommended density adjustment HR 0 58 PT1 black The detection of HC k works in the same way HC 0 18 PT1 black If the measured value matches to the target value no adjustments are nece
81. ty by Device upgrade The Basic model can be extended via data upload to Advanced or Premium functionality without the need to send the instrument to the TECHKON service center Of course the same procedure applies for upgrades from Advanced to Premium The procedure is explained in the program window SpectroDens settings SpectroDens Info Lock device Function Device info Displays Ehe device version Basic Advanced Premium the device software hardware version and serial number Device update Brings the device software up to date Please load the File device Firmware File SpectroDens Vx x ksd Free of charge From the internet at wan kechkan com in Ehe category Service gt Download Software With SpecktroDens connected start the device update Execute device update Export Media Wedge SpectroDens settings Manual TECHKON SpectroDens Chapter 3 SpectroConnect Device update SpectroCheck Device screenshot rS Premium Software 8 04 08 10 2008 Hardware version 2 Serial number 901011 Device upgrade m BS wy SE Upgrade the device to a higher level 1 Device upgrades have to be purchased Please order the upgrade File Axxxxxx tur For vour device at 2 With SpectraDens connected start the device upgrade Execute device upgrade A PhataLab ColorCatcher colors
82. w Open Save Print and Quit 2 The window Samples shows samples which are stored in the device see p 56 Only in SpectroDens Advanced and Pre mium available 3 The window References shows stored references Only in SpectroDens Advanced and Premium available 4 The window Color books displays the color books which are stored in the color library of the device Per Drag and Drop Manual TECHKON SpectroDens Chapter 3 SpectroConnect you can copy references and complete color books from here 5 In this section the appropriate measure ment device can be selected 6 Window of the active program module 7 This bar shows the list of available pro gram modules They can be selected from this bar directly via mouse click and the applica tion will appear in the middle of the display After launching SpectroConnect it is pre set to display the module Compare colors Page 65 3 4 Software module SpectroDens settings In this module device specific settings can be made SpectroDens Info Lock device functions Device update Device screenshot SpecktreDeres Info Software 8 04 ENS All settings which can be made at the device can also be made with this software feature It is very convenient for typing numerical values of references and tolerances Device functions can be locked and unlocked with this feature Locked
83. ypes Folanzing filter Auto E White Reference Auto g Density Filter DIN 165369 Density Reterence setup Dotqain setup Printing Curve Setup rule Nielsen coefficient 1 00 Trapping formula Illuminant Observer Paper White Calibration done 1 31 Manual SpectroDens Chapter 2 Measurement functions The setting of the Yule Nielsen factor is done in the settings window of the measurement conditions If there is no information about the factor available from the documentation furnished with the plates we recommend to keep the value in a neutral range at n The measurement is performed as known from measuring on printed paper First calibrate on a light not imaged area of the printing plate as it would be a paper white calibration 2 Now measure a dark 100 imaged patch SpectroDens will select one of the four CMYK channels where the contrast signal is highest depending on the color shade of the plate In this case the Cyan channel gave the highest signal because the plate is blue violet 3 Now the measurement on a patch is carried out and displayed Additional 76 measurements can be easily made It is not necessary to measure the solid density again because it is already saved which is indicated by the frame around the value Page 35 Slur and Doubling With the measurement function Slur and Doubling printing defic

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