CHAPTER 2. BASIC OPERATION
2–43
B. BJ Print head Drive
1. Construction of electric head unit
The figure below is a block diagram of the BJ print head drive control circuit.
Figure 2-304
0
1
2
3
320-bit Tr.Array
1A
1B
160
160-bitLatch
RANK
GNDH
SUBH
HSEL1A
ODATA
IODATA
DCLK
RESET
LTCLK
DIR
DIA
DIK
BENB0
BENB1
ODD
EVEN
Sub-heater X2
Head temperature
sensor
Rank resistance
Decoder
2 4
160bit Shift register
1
Heater 1A
Heater 160B
VH
2A
2B
3A
3B
5A
7A
9A
112B
113A
159B
160A
160B
9B
113B
2
3
5
7
9
112
113
159
160
HSEL1B
HSEL2A
HSEL2B
HENB1A
HENB1B
HENB2A
HENB2B
Serial transfer unit
VDD
GNDL
TA
Heater 1B
Heater 2A
Heater 2B
Heater 3A
Heater 3B
Heater 5A
Heater 7A
Heater 9A
Heater 9B
Heater 112B
Heater 160A
Heater 159B
Heater 113B
Heater 113A
HSEL1A HSEL1B HSEL2A HSEL2B HENB1A HENB1B HENB2A HENB2B
*
* Heater A: Large heater
Heater B: Small heater
Содержание BJ-W3000
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