Home switch & tacho-generator in common (GND)
Thermal head drive (7 wires)
Thermal head common
Tacho-generator signal
Motor drive output (
−
)
Home switch signal
Motor (
+
)
Figure 6-1 Sample Circuit Block Diagram (B Head-mounted Printer)
8-input
transistor
array
Motor drive
cir
c
uit
Thermal head
drive circuit
(Trans
is
tors
)
TG waveform
shaping circuit
Printing pulse
width control circuit
Motor c
ontrol
signal
Print data
Digit
setting
jumper
terminal
+
5V power
8-bit
par
allel
data
D
0
to D
7
6-2
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from