Seiko Instruments LTP F Series - Manual (Page 36)

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3.5.4 Structure of the Thermal Head (LTPF347)
Figure 3-11 shows the thermal head block diagram for the LTPF347.
Table 3-8 shows the relationship between DST blocks and activated heat elements.
Figure 3-11 Thermal Head Block Diagram (LTPF347)
DAT IN2
CLK
LATCH
DST2
DAT OUT2
TH
TH
Vdd
GND
Output driver
Latch register
Shift register
Heat elements
Vp
DOT640 DOT385 DOT384 DOT
1
Thermistor
Block 2 Block 1
DAT IN1
DAT OUT1
*1
*1
N.C. if not using DAT OUT
DST1
*1