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3.2.5 Drive circuit
The drive circuit built into the heater board controls the ejection of inks. The drive
circuit differs according to the type of BJ cartridge.
1) BC-60
The black head and ink optimizer head are each equipped with the drive circuit
shown in Figure 4-21.
Part 4: Technical Reference
BJC-7100
4-24
1
2
7
8
25
80
99
100
137
192
211
212
231
232
249
304
310
119
120
1
2
6
Block
Enable
Decoder
1
2
7
310-bit
Latch
8
25
80
99
100
119
120
137
192
211
212
231
232
249
304
310
310-bit
Shift Register
310
See diagrams below.
Head Temperature Sensor
Rank Resistance
Sub-heater
VDDH
VH
RANK
GND
SUBH
HEATE
ODDE
EVENE
BE0
BE1
BE2
INV
IDATA
DCLK
LTRST
VDDH
EL
ID1
ID2
TSK
TSA
LTCLK
310-bit
Transistor Array
Heater
310
Heater
1
EL
ID1
ID2
Contact
Black Head
EL
ID1
ID2
Contact
Ink Optimizer Head
Figure 4-21 Block Diagram of BC-60 Drive Circuit