2-4
Mechanism Configuration and Operating Principles
Rev.B
Printing a character (9x9 font)
A character is printed by energizing the print solenoids with respect to the Carriage sub-ass’y
portion (the reference timing for the print solenoids is the Motor, carriage phase switching
signals). The print head unit is moved 0.317 mm (0.012”) (in approximately 1.05 ms) each time
the Motor, carriage is rotated one step (7.5°).
To print character “2,” print solenoids 2 and 9 are energized first at the same timing as the
Motor, carriage phase switching signal. Then, print solenoid 8 is energized at TnH (being
delayed a half dot). The remaining print solenoids are energized correspondingly, and the
character “2” is finally printed.
Figure 2-5 Print timing chart
1
2
3
5
4
6
7
8
9
Tn
TnH
Tn+2
Tn+1
Tn+3
TnH(4)
Tn+5
Tn+4
Motor, carriage phase
switch timing
Print solenoid
Summary of Contents for TM U200D - B/W Dot-matrix Printer
Page 2: ...technical manual TM U200D U200PD EPSON English 4005680 ...
Page 4: ...EPSON SEIKO EPSON CORPORATION Printed in Japan E9608130 0000SE ...
Page 145: ...Rev B Disassembly Assembly and Adjustment 5 49 TM U200D U200PD Technical Manual ...
Page 146: ...5 50 Disassembly Assembly and Adjustment Rev B ...
Page 147: ...Rev B Disassembly Assembly and Adjustment 5 51 TM U200D U200PD Technical Manual ...
Page 148: ...5 52 Disassembly Assembly and Adjustment Rev B ...
Page 154: ...Appendix A 6 Rev B Main Circuit Board A Parts Layout ...
Page 155: ...Rev B Appendix A 7 TM U200D U200PD Technical Manual Main Circuit Board C Parts Layout ...
Page 156: ...Appendix A 8 Rev B RS 232 Serial Interface Circuit Board Parts Layout ...
Page 169: ...Rev B A 21 TM U200D U200PD Technical Manual Case Unit Lubrication Points Diagram ...
