This chapter describes the operating principles of the circuitry and printer mechanism.
1.
Block Diagram .....................................................................................................
2.
2-1.
Interface ................................................................................................................. 21
2-1-1. RS232C .............................................................................................................. 21
2-1-2. RS422A .............................................................................................................. 22
2-2.
Editing and Printing .............................................................................................. 24
2-2-1. Editing ............................................................................................................... 24
2-2-2. Thermal head .................................................................................................... 24
2-3.
2-4.
Power-On Reset Circuit ........................................................................................ 27
2-5.
3.
Printer Mechanism ..............................................................................................
3-1.
Thermal Head ........................................................................................................ 29
3-2.
Paper-Feed Mechanism ........................................................................................ 29
3-3.
Detectors ............................................................................................................... 30
CHAPTER 2
2
19
21
29