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M-T123
Designer’s Guide
(STANDARD)
Table of Contents
1. CIRCUIT DESIGN REFERENCE .........................................................................................................1
1.1 Example Motor Drive Circuit........................................................................................................1
1.2 Motor Drive Sequence.................................................................................................................1
1.3 Example Power Supply Connection Circuit for the Thermal Print Head .....................................2
1.4 Example Paper-end Signal Detection Circuit ..............................................................................3
1.5 Example Platen Open Signal Detection Circuit ...........................................................................4
2. CONTROL DESIGN REFERENCE ......................................................................................................5
2.1 Motor Driving Frequency .............................................................................................................5
2.2 Energizing Print Head..................................................................................................................6
2.2.1 Print head energizing pulse width ..........................................................................................6
2.2.2 Strobe signal partition .........................................................................................................8
2.3 Timing Chart................................................................................................................................9
2.3.1 Initial setting ........................................................................................................................9
2.3.2 Paper feeding....................................................................................................................10
2.3.3 Printing ..............................................................................................................................11
2.3.4 Keeping the paper paper holding load ..............................................................................13
3. CASE DESIGN REFERENCE............................................................................................................14
3.1 Designing the Case of the Printer Main Unit .............................................................................14
3.1.1 Designing of the part where the printer main unit is installed ...........................................14
3.1.2 Designing the paper roll insertion part ..............................................................................15
3.1.3 Designing protection for the paper detector......................................................................15
3.2 Designing the Case for the Platen Unit .....................................................................................16
3.2.1 Installing the platen unit ....................................................................................................16
3.2.2 Installation position for the platen unit...............................................................................18
3.3 Designing the Platen Open Lever .............................................................................................19
3.3.1 Positioning the platen open lever ......................................................................................19
3.3.2 Movable area of the platen open lever..............................................................................19
3.3.3 Example design for the platen open lever.........................................................................20
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