Thermal printing mechanism MT002 User's Manual
Contents
1. 2 1 0 1 2 mmo 1 2 3 4 5 mm Moving distance 2 CUSTOM 4 5 4 SENSOR Blank Page 4 6 CUSTOM 5 DIMENSIONS 5 1 DIMENSIONS OF MT001 MODEL The figure 5 1 illustrates the overall dimensions for the MT002 thermal printing mechanism Dimensions in mm Fig 5 1 29 32 95 57 5 Section A A War NSA 30 Tolerance limits j UNI EN 22768 2 m EN 0 6 10 1 gt 6 30 02 O O 1 9 n 3 holes gt 30 120 0 3 Y gt 120 400 0 5 Angle 0 5 27 75 xls 27 75 1 Diameter 0 05 CUSTOM 5 1 MT002 5 DIMENSIONS Blank page MT002 5 2 CUSTOM2. motor is 2 steps for one dotline Sz Note 1 dotline 0 125 mm 3 1 1 Technical specifications Item Specification Tab 3 1 Drive voltage DC 5 5 V No of phases 2 Drive mode Bipolar drive Step angle 18 2 Rated current 350 mA Phase Resistance 120 7 at 25 C each phase Inductance 3 7 MH 25 at 25 C 1kHz 1Vrms Holding torque 33 7 gf cm MIN Pull out torque 1200 pps 13 3 gf cm MIN Insulation resistance 100 MQ MIN 500 Vdc Insulation class Class E Dielectric strength AC 500V 1 min Life 3000 Hr min Maximum coil temperature 115 C 3 1 2 Excitation seguence The motor is driven in the forward direction if its excitation phases are switched as per the following steps Signal Tab 3 2 Sequence PH2B PH1B PH1A PH2A Step1 High Low Low High Step2 High Low High Low Step3 Low High High Low Step4 Low High Low High CUSTOM 3 1 3 STEPPER MOTOR Excitation Voltage Waveforms 1dot line Fig 3 1 PH2B H L PH1B H L PH1A H L PH2A H L 3 2 PRECAUTION 1 Drive the motor with mosfet driver to obtain the maximum torque force instead transistor driver transistor driver lose voltage VCEsat 2 2 Please check the ratio print pause to prevent the overtemperature on stepper motor 3 If the motor is driven by more than 5 volts we suggest to use a chopper driving in order t
3. 20 GND GROUND 21 GND GROUND 22 CLK SERIAL CLOCK 23 DI DATA INPUT 24 VH HEAD POWER SUPPLY 25 VH HEAD POWER SUPPLY 26 VH HEAD POWER SUPPLY Note The thermistore of print head is connected to V on the capton MT002 1 2 CUSTOM gt O e 1 2 Electrical circuit block diagram of motor Fig 1 2 N I A PH1B PH1A PH2A MTOO2 1 3 CUSTOM 1 CONNECTIONS 1 3 Electrical circuit block diagram of Paper end sensor ee AP Fig 1 3 i 9 3 4 amp 5 A K E 1 4 CUSTOM 2 PRINT HEAD 2 1 PRINT HEAD 002 has a thickfilm thermal printhead and is allowed to have 4 0 A maximum power absorbed the print density variation may become larger if the number of dots energized at same time becomes greater than 64 Scanning Line Time SLT is the time to print one complete line using all strobes available The relation between the printhead supply voltage and On Time Ton is as follows VH x Rave Po lo x Rav Rcom x N Rave Ric Ric Eo Ton Po or Eo Po Ton PO x N Rav Ric V Rav Tab 2 1 Symbol Parameter Value Unit Average resistance Heater resistance Lead resistance ae 2 N No of burning dots at same time example 100 dots Rcom Common Resistance 0 05 0 Ric Driver saturated resistance 9 0 2 2 OPERATION PRECAUTIONS 1 When continuous printin
4. K VDD TM 2 PRINT HEAD If printing sound for example sticking sound occured please review and adjust the paper feed mechanism and the electrical pulse to avoid these kind of mechanical resonance Please pay attention that the paper used does notinclude bad factor to affect printhead life The print density variation may become larger if the number of dots energized at same time becomes greater than 100 In order to avoid surge a 47 uF capacitor is required between VH and GND at controller board side 0 1 uF ceramic capacitor should be placed between VDD and GND 2 3 BLOCK DIAGRAM OF THE ELECTRICAL CIRCUIT Fig 2 1 S 8 9 10 24 25 26 DOT 384 DOT 1 7 12 13 14 19 20 21 6 5 4 3 2 1 o 18 o 15 11 gt LATCH REGISTER O 23 22 SHIFT REGISTER 17 gt o 16 Km 30KN B 3950 Tab 2 2 STB No Dot No Dots STB 1 1 192 192 2 193 384 192 MT002 2 2 CUSTOM 2 PRINT HEAD 2 4 PRINTING DATA AND PRINTING POSITION Print data of 384 bit length is printed in the arrangement as shown in the following figure Paper feeding direction Fig 2 2 Printing paper Printing surface Printing data lt DATA IN Printer mechanism Motor 2 5 ELECTRICAL CHARACTERISTICS OF CIRCUIT Tab 2 3 Ite
5. LK 3MHz when VDD 3 3 V Also CLK should be within one cycle being subject to the ratio between DATASET UP TIME and DATAHOLD TIME is 1 1 2 7 TIMING CHART Fig 2 3 Tw CLK CLOCK CLK 2 Y ODO tsetup DI t hold DI DATA IN DI High BLACK Low WHITE tdDO DATA OUT DO High BLACK Low WHITE tsetup LAT t hold LAT LATCH LAT High HOLD Low THROUGH Ja iw LAT tsetup STB STROBE STB DRIVER OUT 1 S Notes Symbol tmeans a negative logic signal MT002 2 4 CUSTOM 2 PRINT HEAD 2 8 THERMISTOR The thermistor is very important to adjust the strobe time Tstrobe SLT in function of the head temperature and to monitor the temperature to prevent the head damage if the temperature is over the limit described in the Maximum conditions table Resistance R25 30 KW 5 at 25 C B value 3950 K 2 Operating temperature 20 80 C Time costant Max 30 sec in the air Then the resistance value R versus temperature T in C is given by the formula R T R25 e B 1 TX 1 725 2 8 1 Thermistore Curves Fig 2 4 180 160 140 120 100 80 60 RESISTANGE KO 40 20 0 20 10 0 10 20 30 40 50 60 70 TEMPERATURE CUSTOM 2 5 MT002 2 PRINT HEAD Blank page 2 6 CUSTOM 3 STEPPER MOTOR 3 1 STEPPER MOTOR The paper feed pitch for stepper
6. Thermal printing mechanism MT002 User s Manual CUSTOM www custom biz MT002 All rights reserved Total or even partial reproduction of this manual in any form whether on paper or electronically is strictly forbidden While CUSTOM ENGINEERING SPA guarantees that the information contained in this manual has been carefully checked and verified CUSTOM ENGINEERING SPA and other resources utilized in its creation assume no responsibility for situations arising from its use Feedback regarding any errors in the manual s content or suggestions on how it could be improved would be greatly appreciated Since its products are subject to continuous checking and improvement CUSTOM ENGINEERING SPA reserves the right to modify the information contained in this manual without prior notice COD DOME 002 PRELIMINARY VERS 0 00 Copyright 2006 CUSTOM ENGINEERING SPA Italy CUSTOM ENGINEERING SPA Str Berettine 2 43010 Fontevivo PARMA Italy Tel 39 0521 680111 Fax 39 0521 610701 http www custom biz To contact our Technical Support Email support custom it MT002 CUSTOM Printing mechanism models A MT002 Front exterior view 1 Motor 2 Print Head cable 3 Print Head 4 Knob paper feed A Paper input B Paper outfeed C Paper end sensor CUSTOM MT002 Blank page CUSTOM INTRODUCTION CONVENTIONS USED IN THE MANUAL Gives important information or suggestions relat
7. g is performed the supply energy should be reduced so that the substrate tempera ture show in Maximum Condition Table 2 Power On and Off sequence must be in the following order to prevent the dot element damage Turn On Apply the logic supply voltage Vdd first and then the printhead supply voltage VH Turn Off Switch off the printhead supply voltage VH first and then turn the logic voltage Vdd off 3 The printhead shall be disabled in STB during Power ON OFF or Power VH Logic Vdd sequence described in note 2 shall be kept 4 Heat elements and IC s shall be anti electrostatic in order to prevent the electrostatic destruction Do not touch the connector pins with naked hands 5 The printhead substrate surface is coated with glass and mechanical stress or shock including dust scratch damage should be avoided to prevent damage 6 When the printhead operation is finished printsupply voltage including the charged voltage with capacitor should be reduced to the ground level and remained until next printhead operation occur 7 Condensation should be avoided If condensation occurred do not switch on the printhead power until condensation disappear 8 Print quality would be degraded if paper or ink residue were sticked on the heat element area For such a case please use applicator with alcohol to clean up Do not use the sandpaper destroying the heat elements CUSTOM 2 1 10 11 VH GND STB2 STB1 LAT DI CL
8. ive to the use of the printer WARNING The information marked with this symbol must be carefully heeded to safeguard against damaging the printer DANGER AN The information marked with this symbol must be carefully heeded to safeguard against injury to the operator GENERAL SPECIFICATIONS Tab 1 Item Specification Printing method Thermal line dot method Effective printing width 48 mm 0 2 mm Head configuration dots line 384 Dot Pitch 0 125 mm Printing Speed up to 90 mm sec Paper width mm 58 mm 0 1 mm Paper roll maximum diameter 60 mm Paper feed method Friction feed 1 dot line 2 pulses bipolar Head temperature sensor Thermistor Paper detection Photo interrupter reflessive Maximum number of dots 100 activated at a time Dot resistance Rav 176 Q 4 Number of strobes 2 5 C 0 16 mJ dot 0 68 ms Vu 7 2V Header energy 25 C 0 13 mJ dot 0 55 ms Vu 7 2V 45 C 0 11 mJ dot 0 47 ms Vy 7 2V Driver saturated resistance Ric External dimensions W x D x H 67 3 x 17 4 x 33 Weight 36 gr Operation Voltage Thermal head 5V 5 Current consumption Medium 2 5 A Max 4 A Peak 3A Life Reability 50 Km 1 x 108 pulses Recommended paper weight 55 g m Recommanded paper KF 50HDA or equivalent Noise Max 51dbA CUSTOM 1 INTRODUCTION Maximum ratings at 25 C Tab 2 Item Specification Head
9. m SYMBOL MINI TYP MAXI Unit Conditions Head power supply Vu 7 2 8 5 V Logic power supply Vpp 3 00 5 00 5 25 V Logic supply current 54 IDI fCLK 2 High Vin 0 8 x Vpp Vpp V Input Voltage LOW Vi 0 0 2 x Von V STB DI LAT CLK Data input current High lin DI 0 5 uA DI Low lu DI 0 5 uA STB input current High liu STB 30 uA STB Low l STB 0 5 UA VIH 5V Clock input current High CLK 3 uA VIL OV CLK Low l CLK 3 uA Latch input current High lim LAT 3 uA LAT Low In LAT 3 uA CUSTOM 2 3 2 PRINT HEAD 2 6 SWITCHING CHARACTERISTICS OF CIRCUIT an nm RT Tab 2 4 The switching characteristic summarized in the following table Item SYMBOL MIN TYP MAX UNIT CONDITIONS 5 8 Vpp 5 0V Clock frequency fCLK 3 5 MHz Von 3 3V Clock width tw CLK 95 155 ns Vpp 5 0V 5MHz Data set up time t setup DI 100 140 ns Vpp 3 3V 3MHz Data hold time t hold DI 85 ns i 50 Vpp 5 0V Data out delay time td DO i 90 ns Von 3 3V Latch width tw LAT 150 ns Latch set up time t setup LAT 200 ns Latch Hold time t hold LAT 80 ns STB set up time t setup STB 300 ns Driver out delay time tdo 10 30 us Vpp 5 0V Vpp 3 3V gt Notes CLK should be used at duty 50 5 if operated more than fCLK 5MHz or fC
10. o reduce current please contact CUSTOM ENGINEERING SPA for further information 3 2 CUSTOM 4 SENSOR 4 1SENSOR Maximum Ratings Ta 25 Tab 4 1 Parameter Symbol Rating Unit Power dissipation Po 75 mW input Reverse voltage Vn 5 V Forward current lF 50 mA Pulse forward current les 1 A Collector power dissipation Pc 50 mW Output Collector current le 20 mA Collector emitter voltage Vceo 30 V Emitter collector voltage Veco 3 V Operating temperature range Topr 20 85 C Storage temperature range Tsra 30 100 C w NOTE Pulse width lt 100 us Repetitive frequency 100 Hz o Tab 4 2 Opto electrical characteristics Ta 2 25 Parameter Symbol Conditions MIN TYP MAX Unit Forward voltage VF Ir 10 mA 1 3 V Input oe In Vr 5V 10 eak emission wavelength Ap l 10 mA 940 nm Collector dark current Iceo Vee 10 V 0 2 re Peak ibilit eak sensibility _ i wavelength Ap 209 u Light current IL Vee 5V Ir 10 mA 90 Leakage current ILEAK Vee 5V 10 0 2 Switching Rise time tr Vec 2V Ic 0 1mA s 30 us Speeds Fall time t RL 1 KO 2 25 us CUSTOM 4 1 4 SENSOR 4 2 GRAPHICS OF TYPICAL CHARACTERISTICS Collector Power dissipation vs Ambient Temperature MW Fig 4 1 Collector Powe
11. r dissipation Pc o 20 40 60 80 100 C Ambient temperature Ta Forward Current vs Forward Voltage mA i H 0 5 1 0 1 5 2 0 V Forward voltage Vr 4 2 CUSTOM Fig 4 2 IF N o G Forward current al O 4 SENSOR Light Current vs Forward Current Fig 4 3 5 O D Forward current IF Light Current vs Collector Emitter Voltage mA Fig 4 4 1 imm 90 Reflective paper IL Light current Collector Emitter voltage Vce CUSTOM 4 3 4 SENSOR Relative light current vs Ambient temperature 20 Fig 4 5 Vce 5V Relative light current 20 0 20 40 60 80 Ambient temperature Dark current vs Ambient temperature NA 10 Fig 4 6 Iceo 0 10 Dark current IN Os Ambient temperature Ta 4 4 CUSTOM 4 SENSOR Switching time vs Load resistance usec I 107A Fig4 7 Vcc 2V 10 Ta 25 C o tf E 10 tr 10 10 10 10 2 Load resistance Ri Relative light current vs Moving distance X Ir 4mA Fig 4 8 Vce 10V u o al o Relative light current It
12. voltage Vu 8 5 V Supply voltage Von 7 V Substrate Temperature 65 C Environment operating ee temperature range 19 50 Operating humidity 10 90 RH no condensation Environment storage temperature except paper MAIN FEATURES Paper width 58 mm 0 1 mm Resolutions 8dot mm 203dpi Autoloading capability Printing speed up to 90 mm sec Sensors Paper end sensor temperature sensor thermistor 30K Life 50 Km Printed paper Compact Layout 2 CUSTOM 1 CONNECTIONS BOTTOM VIEW PIN 1 Mm Fig 1 1 1 1 CONNECTIONS TERMINALS The mechanism has one interface connector see fig 1 1 that includes the thermal head signal motor control and paper sensor control The connector s pin assignments is as follows see Tab 1 1 CUSTOM 1 1 MT002 1 CONNECTIONS Connector type ZIF connector for flexible printed circuit 26 pin pitch 1 mm Tab 1 1 No Signal Function 1 PH2B 2 PH1B MOTOR 3 PH1A 4 PH2A 5 Photo transistor collector 6 Led Anode PAPER END SENSOR 7 Photo transistor emitter Led cathode 8 VH HEAD POWER SUPPLY 9 VH HEAD POWER SUPPLY 10 VH HEAD POWER SUPPLY 11 LAT LATCH 12 GND GROUND 13 GND GROUND 14 GND GROUND 15 STB1 STROBE1 SIGNAL 16 TM THERMISTOR 17 Vs LOGIC VOLTAGE 18 STB2 STROBE2 SIGNAL 19 GND GROUND
Download Pdf Manuals
Related Search