Sony UP-960 Service Manual page 43

4-5. THERMAL HEAD SECTION
4-5-1. Structure
Thermal head consists of one line 1280 dot (128 bit x 10). There are ten combinations such as follows.
( DATA input is 10 DATA [10 : 1], other terminals are common.)
+5 V
DR
BEO
STB
DATA[n]
CLK
DATA
CLK
STB
DR
BEO
UP-960(UC)
UP-960CE(CE)
R1 R2
D1 D2
D1 D2
Thermal Head Inner Circuit Structure
print data(128 data)
128CLK
When starting the print, here becomes H.
Timing Chart
R3
D3 D128
D3 D128
V
H
R128
Output stage transistor
Latch section
Shift register section
Head heat time
4-13