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Part 4: Technical Reference
3.2.4 Signal contact part
The signal contact part of the BJ cartridge PCB contacts the signal contact part of the
carriage ribbon cable to transfer print signals and detection signals between the
printer and the BJ cartridge.
The following signals are transferred with the BJ cartridges.
TABLE 4-4 INK TYPE EJECTED FROM BJ CARTRIDGES
Head
A
B
C
C Head
B Head
A Head
Figure 4-18 BJ Cartridge I/O Signals
Black BJ cartridge
Color BJ cartridge
BC-80
Black
Ink Optimizer
Black
PCB
36
35
34
33
27
26
25
24
18
17
16
15
9
8
7
6
Photo BJ cartridge
BC-81
BC-82 Photo
Cyan
Photo Black
Magenta
Photo Cyan
Yellow
Photo Magenta
4-20
BJC-8500
32
31
30
29
28
23
22
21
20
19
14
13
12
11
10
5
4
3
2
1
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