LTPH245 Ver la hoja de datos (PDF) - Seiko Instruments Inc
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LTPH245 Datasheet PDF : 64 Pages
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TABLE OF CONTENTS
Section
CHAPTER 1 PRECAUTIONS
1.1 SAFETY PRECAUTIONS .............................................................................................
1.2 DESIGN AND HANDLING PRECAUTIONS .................................................................
1.2.1 Design Precautions..........................................................................................
1.2.2 Handling Precautions.......................................................................................
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CHAPTER 2 FEATURES
CHAPTER 3 SPECIFICATIONS
3.1 GENERAL SPECIFICATIONS......................................................................................
3.2 HEAT ELEMENT DIMENSIONS...................................................................................
3.3 PAPER FEED CHARACTERISTICS ............................................................................
3.4 STEP MOTOR CHARACTERISTICS ...........................................................................
3.4.1 Motor Drive Circuit ...........................................................................................
3.4.2 Motor Timing ....................................................................................................
3.4.3 Precautions for Driving the Motor ....................................................................
3.5 THERMAL HEAD..........................................................................................................
3.5.1 Structure of the Thermal Head ........................................................................
3.5.2 Printed Position of the Data .............................................................................
3.5.3 Head Resistance..............................................................................................
3.5.4 Head Voltage ...................................................................................................
3.5.5 Peak Current....................................................................................................
3.5.6 Thermal Head Electrical Characteristics..........................................................
3.5.7 Timing Chart ....................................................................................................
3.6 CONTROLLING THE HEAD ACTIVATION (DST) PULSE WIDTH .............................
3.6.1 Calculation of Head Activation Pulse Width.....................................................
3.6.2 Calculation of Applied Energy..........................................................................
3.6.3 Calculation of Head Activation Voltage............................................................
3.6.4 Calculation of Head Resistance.......................................................................
3.6.5 Determination of Activation Pause Time and Activation Pulse Period.............
3.6.6 Head Activation Pulse Term Coefficient ..........................................................
3.6.7 Head Storage Coefficient.................................................................................
3.6.8 Calculation Sample for the Head Activation Pulse Width ................................
3.6.9 Thermistor Resistance.....................................................................................
3.6.10 Detecting Abnormal Temperatures of the Thermal Head................................
3.7 PAPER DETECTOR .....................................................................................................
3.7.1 General Specifications .....................................................................................
3.7.2 Sample External Circuit ...................................................................................
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