Seiko LTP1245R-C384-E, Техническое описание, Страница: 5 / 74

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TABLE OF CONTENTS
Section
Page
CHAPTER 1 PRECAUTIONS
1.1 SAFETY PRECAUTIONS ............................................................................................ 1-1
1.2 DESIGN AND HANDLING PRECAUTIONS ................................................................ 1-2
1.2.1 Design
Precautions ......................................................................................... 1-2
1.2.2 Handling Precautions ...................................................................................... 1-3
1.2.3 Precautions on Discarding .............................................................................. 1-4
CHAPTER 2 FEATURES
CHAPTER 3 SPECIFICATIONS
3.1 GENERAL SPECIFICATIONS ..................................................................................... 3-1
3.2 HEAT ELEMENT DIMENSIONS .................................................................................. 3-3
3.3 PAPER FEED CHARACTERISTICS............................................................................ 3-4
3.4 STEP MOTOR CHARACTERISTICS........................................................................... 3-5
3.4.1 Motor
Drive Circuit........................................................................................... 3-6
3.4.2 Motor Timing.................................................................................................... 3-8
3.4.3 Precautions for Driving the Motor.................................................................... 3-10
3.5 THERMAL HEAD ......................................................................................................... 3-14
3.5.1 Structure of the Thermal Head ........................................................................ 3-14
3.5.2 Printed Position of the Data............................................................................. 3-16
3.5.3 Head Resistance ............................................................................................. 3-17
3.5.4 Head Voltage................................................................................................... 3-17
3.5.5 Peak Current ................................................................................................... 3-17
3.5.6 Thermal Head Electrical Characteristics ......................................................... 3-18
3.5.7 Timing Chart .................................................................................................... 3-19
3.6 CONTROLLING THE HEAD ACTIVATION (DST) PULSE WIDTH ............................. 3-20
3.6.1
Calculation of the Head Activation Pulse Width .............................................. 3-20
3.6.2 Calculation of the Applied Energy ................................................................... 3-20
3.6.3 Adjustment of the Head Activation Voltage..................................................... 3-21
3.6.4 Adjustment of the Head Resistance................................................................ 3-21
3.6.5 Determination of Activation Pause Time and Activation Pulse Period............ 3-22
3.6.6 Head Activation Pulse Term Coefficient.......................................................... 3-22
3.6.7 Calculation Sample for the Head Activation Pulse Width ............................... 3-23
3.6.8 Thermistor Resistance .................................................................................... 3-24
3.6.9 How to Print Using 2-ply Thermal Paper......................................................... 3-25
3.6.10 Detecting Abnormal Temperatures of the Thermal Head ............................... 3-26
3.7 HEAD-UP/PAPER DETECTOR ................................................................................... 3-27
3.7.1 General Specifications .................................................................................... 3-27
3.7.2 Sample External Circuit................................................................................... 3-28
3.7.3 Automatic Paper Load..................................................................................... 3-29
3.8 Mode Code Label ......................................................................................................... 3-30