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Custom Audio Electronics MT002 User Manual

Thermal printing mechanism
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Thermal printing mechanism
MT002
User's Manual
www.custom.biz
MT002

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Summary of Contents for Custom Audio Electronics MT002

  • Page 1 Thermal printing mechanism MT002 User’s Manual www.custom.biz MT002...
  • Page 2 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 - MT002 PRELIMINARY VERS. 0.00 Copyright © 2006 CUSTOM ENGINEERING SPA – Italy CUSTOM ENGINEERING SPA Str.
  • Page 3 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 MT002...
  • Page 4 Blank page MT002...

  • Page 5: Conventions Used In The Manual

    5 V ± 5% Operation Voltage Thermal head Current consumption Medium 2,5 A Max 4 A Peak 3 A Life/Reability 50 Km 1 x 10 pulses Recommended paper weight 55 g/m Recommanded paper OJI KF-50HDA or equivalent Noise Max 51dbA MT002...

  • Page 6: 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. MT002...

  • Page 7: Bottom View

    PIN 1 PIN 26 (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 ): MT002...
  • Page 8 1. CONNECTIONS Connector type : ZIF connector for flexible printed circuit 26 pin (pitch 1 mm) (Tab.1.1) t s i e l l t s i Note : The thermistore of print head is connected to V on the capton. MT002...
  • Page 9 1. CONNECTIONS 1.2 Electrical circuit block diagram of motor (Fig.1.2) PH2B PH1B PH1A Motor PH2A MT002...
  • Page 10 1. CONNECTIONS 1.3 Electrical circuit block diagram of Paper-end sensor (Fig.1.3) K / E MT002...

  • Page 11: Operation Precautions

    2. PRINT HEAD 2.1 PRINT HEAD MT002 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.

  • Page 12: Block Diagram Of The Electrical Circuit

    0.1 μF ceramic capacitor should be placed between VDD and GND. 2.3 BLOCK DIAGRAM OF THE ELECTRICAL CIRCUIT (Fig.2.1) DOT #384 DOT #1 8, 9, 10, 24, 25, 26 7, 12, 13, 14, 19, 20, 21 STB2 STB1 LATCH REGISTER SHIFT REGISTER THERMISTOR (Tab.2.2) MT002...

  • Page 13: Printing Data And Printing Position

    0.8 x V Input Voltage STB, DI, LAT, CLK 0.2 x V Data input current High (DI) -0.5 High STB input current (STB) -0.5 VIH = 5V VIL = 0V Clock input current High (CLK) Latch input current High (LAT) MT002...

  • Page 14: Switching Characteristics Of Circuit

    High : BLACK Low : WHITE t setup LAT t hold LAT LATCH (LAT) High : HOLD Low : THROUGH tw LAT t setup STB STROBE (STB) DRIVER OUT Symbol “ “ : Notes : means a negative logic signal. MT002...
  • Page 15 Then the resistance value, R, versus temperature , T (in °C) is given by the formula : R(T) = R25 * e {B*(1/TX – 1/T25)} 2.8.1 Thermistore Curves (Fig.2.4) T E M P E R AT U R E : ( ° C ) MT002...
  • Page 16 2. PRINT HEAD Blank page MT002...

  • Page 17: Stepper Motor

    Class E Dielectric strength AC 500V 1 min. Life 3000 Hr min. Maximum coil temperature 115°C 3.1.2 Excitation sequence The motor is driven in the forward direction if its excitation phases are switched as per the following steps : (Tab.3.2) MT002...
  • Page 18 Please check the ratio print/pause to prevent the overtemperature on stepper motor. If the motor is driven by more than 5 volts we suggest to use a chopper driving, in order to reduce current, please contact CUSTOM ENGINEERING SPA for further information. MT002...
  • Page 19 Peak sensibility λ wavelength μA Light current = 5 V, = 10 mA μA Leakage current = 5 V, = 10 mA LEAK μs Switching Rise time = 2 V, = 0.1 mA speeds μs = 1 KΩ Fall time MT002...

  • Page 20: Graphics Of Typical Characteristics

    4. SENSOR 4.2 GRAPHICS OF TYPICAL CHARACTERISTICS Collector Power dissipation vs. Ambient Temperature (Fig.4.1) Forward Current vs. Forward Voltage (Fig.4.2) MT002...
  • Page 21 4. SENSOR Light Current vs. Forward Current (Fig.4.3) Light Current vs. Collector-Emitter Voltage (Fig.4.4) 90% Reflective paper MT002...
  • Page 22 4. SENSOR Relative light current vs Ambient temperature (Fig.4.5) Dark current vs Ambient temperature (Fig.4.6) MT002...
  • Page 23 4. SENSOR Switching time vs Load resistance (Fig.4.7) Relative light current vs Moving distance (Fig.4.8) MT002...
  • Page 24 4. SENSOR Blank Page MT002...
  • Page 25 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) 67,3 30,55 32,95 26,85 +0.05 10,5 - 0.05 Section A-A +0.05 - 0.05 89° 55° 21,5...
  • Page 26 5. DIMENSIONS Blank page MT002...

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