Thermal printing mechanism MT2460 User's Manual
Contents
1. VH 24V o 1 2 3 448 321 320 129 GND o 4 5 D ARA O TM 4 8 THERMISTOR 30KO B 3950 O VDD 5V 7 STB3 o 11 Z STB2 5 10 a y o LATCH 14 gt LATCH REGISTER el is 2 gt 448 BIT SHIFT REGISTER CLOCK B 13 15 PIN Fig 2 1 Notes Symbol means a negative logic signal 2 3 1 Head Division Processing The thermal head has 3 strobes and print divide into up 3 times is possible The relation between strobes and position of heting elements is shown in the following table Tab 2 2 STB no DotNo DotsSTB Za 1 128 128 129 256 128 257 448 192 2460 2 2 CUSTOM 2 PRINT HEAD 2 4 PRINTING DATA AND PRINTING POSITION The data of 448 bits 1 to 448 transferred by DATA IN DI are printed in the arrangement as shown in the following figure Fig 2 2 Paper feeding direction Printing paper Printing side Printing data lt DATA IN Printer mechanism Motor CUSTOM 2 3 MT2460 2 PRINT HEAD 2 5 ELECTRICAL CHARACTERISTICS OF CIRCUIT Tab 2 3 SYMBOL Head power supply VH Logic power supply Logic supply current Input Voltage High VIH 0 8xVdd Input Voltage Low VIL 0 Data input current DI High ILHDI Data input current DI Low ILLDI STB 1 to 3 input current High IHSTR STB 1 to 3 input current Low STR2. 4 1 SENSOR Maximum Ratings Ta 25 C Tab 4 1 Parameter Symbol Rating Unit Forward current l 50 mA Forward current derating gt 25 0 67 mA C E D Pulse forward current 400 mA Reverse voltage Va 5 D Collector emitter voltage 30 E Emitter collector voltage ECO 5 E Collector power dissipation 50 mW Collector power dissipation derating 0 67 mW C Ta gt 25 Collector current I 20 mA Operating temperature range Y 25 85 C Storage temperature range d 30 100 NOTE Pulse width 100 lt Repetitive frequency 100 Hz Opto electrical characteristics Ta 25 C Tab 4 2 Parameter Symbol Conditions MIN MAX Unit Forward voltage V 10mA 1 00 1 15 1 30 LED Reverse current Va 5V 5 10 Peak emission n L 10mA _ 940 n wavelength Collector dark current Vo 10 I 0 0 1 ibili Peak sensibility n 900 wavelength P Collector current V 25V 1 10mA 50 750 pA Leakage current 5V 10mA 0 1 Collector emitter COUPLED on voltage Vee 25 045 04 V Rise time t Vig 10 1 1 mA 10 us Fall time t 10 us NOTE IC classification R 50
3. e Resistance R25 30 KQ 5 at 25 C e Bvalue 3950 K 2 e Operating temperature 20 80 C e 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 B 1 TX 1 T25 MT2460 2 6 CUSTOM 2 PRINT HEAD Tab 2 5 Temperature C Thermistor Resistance R MIN KQ TYP KQ MAX KQ 20 0 268 8 296 6 326 5 15 0 202 7 222 3 243 2 10 0 154 2 168 2 182 9 5 0 118 4 128 4 138 9 0 0 91 70 98 90 106 4 5 0 71 65 76 71 82 10 10 0 56 20 59 99 63 88 15 0 44 50 47 27 50 10 20 0 35 49 37 53 39 58 25 0 28 50 30 00 31 50 30 0 22 84 24 14 25 46 35 0 18 42 19 55 20 71 40 0 14 95 15 93 16 94 45 0 12 20 13 06 13 94 50 0 10 02 10 76 11 54 55 0 8 271 8 920 9 596 60 0 6 864 7 430 8 021 65 0 5 726 6 219 6 738 70 0 4 799 5 230 5 686 CUSTOM 2 7 MT2460 2 PRINT HEAD 2 8 1 Thermistore Curves Fig 2 5 350 000 300 000 250 000 O lt 200 000 2 150 000 a 2 0 100 000 50 000 0 000 o LO o LO o LO o LO o LO o LO o LO LO o LO o N T T T N N m LO LO co N Temperature MT2460 2 8 CUSTOM 3 STEPPER MOTOR 3 1
4. Clock input current High ILHCLK Clock input current Low ILLCLK Latch input current High Latch input current Low ILLAT Data out output voltage High VDOH 4 45 V Data out output voltage Low VDOL 1 3 2 0 V Clock frequency f 0 1 1 0 3 5 MHz CLA S 1 Note Each strobe includes pull up resistance of 300KQ 50 MT2460 2 4 CUSTOM 2 PRINT HEAD 2 6 SWITCHING CHARACTERISTICS OF The switching characteristic summarized in the following table CIRCUIT Tab 2 4 SYMBOL Clock frequency ls Clock pulse width tw T Data setup time tsu D Data hold time th D Latch setup time tsu LA Latch pulse width tw LA Strobe setup time tsu 577 100 ns Strobe to driver TpLH Otuput delay time TpHL m d Fig 2 3 tw T CLOCK DATA IN tsu D LATCH tsu LA tw LA STROBE OUTPUT VOLTAGE CUSTOM 2 5 MT2460 2 PRINT HEAD 2 7 TIMING CHART Fig 2 4 1 0M Hz CLOCK DAT A IN LATCH STROBE 1 2 STROBE 3 means a negative logic signal S Notes Symbol 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
5. the logic supply voltage Vdd first and then the printhead supply voltage Turn Off Switch off the printhead supply voltage first and then turn the logic voltage 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 printing sound for example sticking sound occured please adjust the paper feed speed or pulse to avoid these kind of mechanical resonance 9 Please pay attention that the paper used does not include bad factor to affect printhead life 10 The print density variation may become larger if the number of dots energized at same time becomes greater than the 192 value CUSTOM 2 1 MT2460 2 PRINT HEAD 2 3 BLOCK DIAGRAM OF THE ELECTRICAL CIRCUIT
6. 00 20 To 400 16 300 12 5 5 200 8 2 100 4mA 0 0 2 4 6 8 10 12 14 Collector emitter voltage V V Collector Emitter Saturation Voltage vs Ambient temperature 10 Fig 4 6 0 20 l 25 Collector emitter saturation voltage V cesar V 40 20 0 20 40 60 80 100 Ambient temperature Ta C MT2460 4 4 CUSTIM 4 SENSOR Dark current vs Ambient temperature Fig 4 7 Dark Current I 0 20 40 60 80 100 120 140 Ambient temperature Ta C CUSTOM 4 5 MT2460 5 DIMENSIONS 5 1 DIMENSIONS The figure 5 1 illustrates the overall dimensions for the MT2460 thermal printing mechanism Dimensions in mm Fig 5 1 58 3 38 2 25 CUSTOM 5 1 MT2460
7. 150 uA 110 330 uA CUSTOM 4 1 MT2460 4 SENSOR 4 2 GRAPHICS OF TYPICAL CHARACTERISTICS Forward Current vs Ambient Temperature 50 40 30 20 10 0 0 20 40 60 80 Ambient temperature Ta C Forward current mA 100 120 140 Fig 4 1 Collector Power dissipation vs Ambient Temperature Collector power dissipation Pc mW 2 40 0 100 120 o j S Fig 4 2 Ambient temperature Ta C MT2460 4 2 CUSTOM 4 SENSOR Forward Current vs Forward Voltage 50 Ta 25 C _ 30 lt E 75 5 5 50 55 0 2 25 LL 1 0 9 1 0 1 1 1 2 1 3 1 4 1 5 Forward voltage V V Fig 4 3 Collector Current vs Forward Current 3000 lt 1000 o 500 SAMPLE A 2 300 o B 5 z 100 PE 2 o 50 E 25 YY Vog 0 4V 1 3 10 30 100 300 1000 4 4 Forward current 1 mA CUSTOM 4 3 MT2460 4 SENSOR Collector Current vs Collector Emitter Voltage 600 Fig 4 5 25 5
8. 3 1 3 1 1 Technical specifications 000 n nannan nnan 3 1 3 1 2 3 2 3 2 PRECAUTION e 3 2 4 SENSOR 41 SENSOR 4 1 4 2 GRAPHICS OF TYPICAL 4 2 5 DIMENSIONS 5 T DIMENSION Sami tii 5 1 MT2460 CUSTOM INTRODUCTION CONVENTIONS USED IN THE MANUAL gt N B Gives important information or suggestions relative to the use of the printer N WARNING The information marked with this symbol must be carefully heeded to safeguard against damaging the printer DANGER The information marked with this symbol must be carefully heeded to safeguard against injury to the operator CUSTOM 1 MT2460 INTRODUCTION GENERAL SPECIFICATIONS Tab 1 Item Specification Printing method Thermal line dot method Effective printing width 56mm 0 2mm Head configuration dots line 448 Dot Pitch 0 125 mm horizontal 0 125 mm vertical Brun pont Paper width mm 60 0 5 Paper feed method Friction feed 1 dot line 1 pulses bipolar 2 2 phase excitation Paper detection Reflective type photosensor Maximum number of dots 192 activated at a time Dot resistance Rav 700 Q 3 Number of strobes 3 5 0 165mJ dot 0 22 ms Header energy 25 C 0 15mJ dot 0 20 ms 40 C 0 14m
9. J dot 0 19 ms Driver saturated resistance Ric 23 Q e s 85 4 x 49 x 20 Weight 72 gr Operation Voltage range logic 10 Operation Voltage dotline head 22 8 25 2 V Current consumption 31 mA dots Life Reability 50 Km Recommanded paper Kanzan KF50 or equivalent MT2460 2 CUSTOM INTRODUCTION Maximum ratings Tab 2 Parameter Specification Head voltage 25 2 V note between connectors Logic voltage Vdd 5V 0 25V 6 Operating humidity 10 90 RH no condensation Storage environmental 40 80 Humidity 10 90 no condensation Paper excluded Maximum operating temperature Detected temperature of thermistor shall not exceed 65 C DESCRIPTION OF THE MECHANISM With the MT2460 mechanim Custom shows a new line of thermal plastic printing mechanisms the new serie offers the possibility to achieve the high performances together with a very compact layout The MT2460 mechanisms prints at a high 203 dpi resolution on paper weights between 60 and 120 gr m also labels The mechanism is featured with a high torque paper pulling motor and with a silicon rubber roll CUSTOM 3 MT2460 INTRODUCTION MAIN FEATURES Paper width from 60 mm Autoloading capability High printing speed up to 65 mm sec Logic voltage 24V Possibility to manage paper thickness from 60 to 120 gr m also labels e Sensors Paper end sensor head up detection temperature sensor thermistor 30K Lif
10. S USED IN THE MANUAL emm 1 GENERAL SPECIFICATIONS cisco ena ento deae 2 DESCRIPTION OF THE MECHANISM etenim eee auta 3 MAIN FEATURES tus EAEE 4 1 CONNECTIONS 1 1 CONNECTIONS TERMINALS cities 1 1 1 2 THERMAL HEAD CONNECTOR sienes 1 2 1 2 1 Thermal head connector s pin assignment 1 2 1 3 MOTOR CONNECTOR session eta 1 3 1 3 1 Motor connector s pin 1 3 1 3 2 Electrical circuit block diagram of motor 1 3 1 4 PAPER END HEAD UP CONNECTOR iacit revera eu une Fax cuerno 1 4 1 4 1 Paper end Head up sensor connector s pin assignment 1 4 1 4 2 Electrical circuit block diagram of paper end head up sensor 1 4 2 PRINT HEAD 21 PRINT HEAD E T 2 1 2 2 OPERATION PREGADUTION Soriana 2 1 2 3 BLOCK DIAGRAM OF ELECTRICAL SERIES CIRCUIT 2 2 2 3 1 Head division DIOGOSSIFTO nar iaa 2 2 2 4 PRINTING DATA AND PRINTING 2 3 2 5 ELECTRICAL CHARACTERISTICS OF CIRCUIT 2 4 2 6 SWITCHING CHARACTERISTICS OF CIRCUIT 2 5 ABS eEe m E 2 6 2 8 THERMISTOR a M LT 2 6 2 8 1 Thetmistor CUVE D o S 2 8 cusronm i MT2460 TABLE OF CONTENTS 3 STEPPER MOTOR 3 1 STEPPER MOTOR tanta
11. STEPPER MOTOR The paper feed pitch for stepper motor is 2 steps for one dotline S 1 Note 1 dotline 0 125 3 1 1 Technical specifications Tab 3 1 Specification Drive voltage DC 24 V No of phases 2 Drive mode Bipolar drive Step angle 18 10 Rated current 350 mA Phase Resistance 120 7 at 25 each phase Inductance 5 7 mH 25 at 25 1kHz 1Vrms Holding torque 85 gf cm MIN Pull out torque 45 gf cm MIN Insulation resistance 100 MQ MIN 500 Vdc Insulation class Class E Dielectric strength 5 mA at 600V AC 1 0 sec Life 210 Hr min Maximum coil temperature 115 CUSTOM 3 1 MT2460 3 STEPPER MOTOR 3 1 2 Excitation sequence The motor is driven in the forward direction if its excitation phases are switched as per the following steps Signal Tab 3 2 Excitation Voltage Waveforms 1dot line Fig 3 1 A L A L L 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 the motor is driven by more than 24 volts we suggest to use a chopper driving in order to reduce current please contact CUSTOM ENGINEERING SPA for further information MT2460 3 2 CUSTOM 4 SENSOR
12. TA INPUT MT2460 1 2 CUSTOM 1 CONNECTIONS 1 3 MOTOR CONNECTOR 1 3 1 Motor connector s pin assignments Tab 1 3 Remarks Phase 1 coil Phase 2 coil Phase 1 coil Phase 2 coil Fig 1 3 MOTA MOTA MOTB MOTB CUSTOM 1 3 MT2460 1 CONNECTIONS 1 4 PAPER END HEAD UP SENSOR CONNECTOR 1 4 1 Paper end Head up sensor connector s pin assignments Tab 1 4 Remarks Photo transistor collector Photo transistor emitter Paper end sensor Led anode Led cathode Head up sensor output Head up sensor Head up sensor output 1 4 2 Electrical circuit block diagram of Paper end Head up sensor Fig 1 4 MT2460 1 4 CUSTOM 2 PRINT HEAD 2 1 PRINT HEAD MT2460 has a thickfilm thermal printhead 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 Tab 2 1 VHead x Rav lo Po lof x Rav Rav Ric Symbol Parameter Unit Rav Average resistance 700 Q Eo Ric Driver Saturated Resistance 230 2 2 OPERATION PRECAUTIONS 1 When continuous printing is performed the supply energy should be reduced so that the substrate temperature 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
13. Thermal printing mechanism MT2460 User s Manual CUSTOM www custom it MT2460 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 MT2460 VERS 1 00 Copyright 2002 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 it To contact our Technical Support Phone 39 0521 680163 Fax 39 0521 680146 Email support custom it o Printing mechanism models MT2460 A Front exterior view MT2460 4 Sensor Head up detection 1 Motor 2 Print Head 3 Head up lever 5 Knob paper feed 6 Thermal head connector A Paper outfeed B Paper input C Paper end sensor MT2460 TABLE OF CONTENTS INTRODUCTION CONVENTION
14. e 50 Km Printed paper Compact Layout Double paper inlet straight and 90 Possibility to have the kit of integrated autocutter New generation of printing head with a high performance Options Control board notch sensor MT2460 4 CUSTOM 1 CONNECTIONS Paper control connector Fig 1 1 Motor connector Thermal head 1 connector 1 1 CONNECTIONS TERMINALS The MT2460 mechanism has 3 interface connectors see fig 1 1 thermal head connector motor connector and paper control connector In the table below aredescribed the connector specifications and functions Tab 1 1 No Connector Pin No Type JST connector or equivalent 1 Thermal head connector 15 Male S15B PH K S Head up sensor Molex connector or equivalent 2 6 female housing 51021 0600 Paper end sensor terminal 50058 800 Molex connector 3 Motor connector 4 female housing 51021 0400 white terminal 50058 8000 CUSTOM 1 1 MT2460 1 CONNECTIONS 1 2 THERMAL HEAD CONNECTOR 1 2 1 Thermal Head connector s pin assignments Tab 1 2 No Signal Function 1 VH HEAD POWER SUPPLY 2 VH HEAD POWER SUPPLY 3 VH HEAD POWER SUPPLY 4 GND GROUND 5 GND GROUND 6 GND GROUND 7 VDD LOGIC POWER SUPPLY 8 TM THERMISTOR 9 STB1 STROBE1 SIGNAL 10 STB2 STROBE2 SIGNAL 11 STB3 STROBE3 SIGNAL 12 N C NOT CONNECTED 13 CLOCK SERIAL CLOCK 14 LATCH LATCH 15 DATA IN DA
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