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BJC-2000
Figure 4-13 Color (Multi-Drop)/ Photo (Multi-Drop) BJ Cartridge Block Diagram
· 128/136 bit shift resistor
Stores the print data (HDATA) transferred from the control board at HCLOCK's
timing.
· 128/136 bit latch
Latches the print data (HDATA) converted by the 128/136 bit shift resistor.
· Block enable decoder
After the BENB (Block enable) 1, 2, and 3 code signals are input, the specified heat
timing signal is output. The heat timing signal is divided into eighths.
· Heater (1 to 128 and 1 to 136)
The heater generates the bubbles required for the nozzles to eject the ink. The
heater heats the bubble jet nozzles. Heating is executed with the timing signal
produced by the block enable decoder and the even nozzle heat enable (EvenENB),
odd nozzle heat enable (OddENB), and heat enable (HENB0 to 3) signals.
· Sub-Heater
This heater maintains the optimum conditions in the nozzle for ink ejection.
· Temperature control heater
This heater controls the head temperature to stabilize the ink ejection amount.
Temperature Control Heater x 2
HT0
HVH
HT1
INKS2
HTA
HTB
HENB<1>
HENB<2>
HENB<3>
HTC
HENB<0>
HTD
Odd ENB
Even ENB
SEL1
SEL2
BENB3
BE0
0
BE1
BENB1
1
BE2
BENB2
2
2-4 Block Enable Decoder
BE3
3
136-bit Shift
Resistor
136-bit Latch
1
2
3
4
8
9
16
17
72
73
135
136
HDATA
HCLK
HRES
HLATCH
DIODE A
Head
Temperature
Sensor
DIODE K
HVdd
GNDL
ID0
Color BJ Cartridge
ID1
(Multi-drop)
Photo BJ Cartridge
ID0
ID1
(Multi-drop)
TOP
VHD
W-HT
Color BJ cartridge (Multi-Drop) and photo BJ cartridge (Multi-Drop) have
the same circuit configuration except for the ID1 connection.
272-bit
Tr.
Array
4-15
Part 4: Technical Reference
Heater 1A
Heater 1B
Heater 2A
Heater 2B
Heater 3A
Heater 3B
Heater 4A
Heater 4B
Heater 8A
Heater 8B
Heater 9A
Heater 9B
Heater 16A
Heater 16B
Heater 17A
Heater 17B
Heater 72A
Heater 72B
Heater 73A
Heater 73B
Heater 135A
Heater 135B
Heater 136A
Heater 136B
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