Printing a character (9x9 font)
A character is printed by energizing the print solenoids with respect to the carriage sub
assembly portion. (The reference timing for the print solenoids is the carriage motor phase
switching signals.) The print head unit moves 0.317 mm (0.012”) (in approximately 1.05 ms) each
time the carriage motor rotates one step (7.5°).
To print the character “2,” print solenoids 2 and 9 are energized first using the same timing as
the carriage motor 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
TnH(4)
Tn+5
Tn+4
Carriage motor phase
switch timing
Print solenoid
Tn+3
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Содержание UP-250
Страница 1: ...EXTERNAL PRINTER FEB 2000 MODEL UP 250 without price TECHNICAL MANUAL ...
Страница 95: ... 86 END END Yes No Action 4 Replace main PCB Replace printer OK Action 4 mechanism assembly ...
Страница 136: ... 127 ...
Страница 149: ... 140 Main Circuit Board Parts Layout ...
Страница 150: ... 141 RS 232 Serial Interface Circuit Board Parts Layout ...
Страница 151: ... 142 IEEE 1284 Parallel Interface Circuit Board Parts Layout ...
Страница 152: ...RS 485 Serial Interface Circuit Board Parts Layout 143 ...
Страница 159: ... 150 Printer Mechanism Unit Lubrication Points Diagram 1 O 10 2 G 31 6 G 31 7 G 31 5 G 31 7 G 31 8 G 31 ...
Страница 160: ... 151 Case Unit Lubrication Points Diagram 4 G 31 4 G 31 3 G 31 3 G 31 ...
Страница 163: ... 154 EXPLODED DIAGRAM FOR TM U200B U210B NO 1 ...
Страница 164: ... 155 EXPLODED DIAGRAM FOR TM U200B U200PB U210B U210PB NO 2 ...