Canon BJC-6000 Technical Information Seite 76
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1.4 Print Driving
The printer sends the control signals to the head in order to allow the head to discharge
ink for printing. These signals consist of the drive control signals that cause ink to be
discharged from the head nozzles, and the thermal control signal that controls the head
temperature to ensure constant ink discharge.
Both control signals are optimized by the printer controller and sent via the carriage
ribbon cable contact section to the head for optimal printing.
1.4.1 Print drive control
a) Black BJ cartridge control
The Black BJ cartridge has 160 nozzles. Each nozzle has two heater boards in an
array, large and small, one in front, the other in the rear. The front and rear heaters
will be controlled to provide multi-drop driving, with both driven simultaneously to
discharge a large drop, or with only the small one driven to discharge a small drop.
The head's 160 nozzles are divided into 10 blocks (16 nozzles per block), with all
blocks driven simultaneously, one nozzle per block in High Speed/Standard mode,
or 20 nozzles per block in all other cases.
The Heat ENABLE signals (HENB 0, 1, 2, 3) are the heater board's drive control
signals. These signals are always fed to the head during printing, using the Block
ENABLE signals (BENB 0,1), Even/Odd ENABLE signal (Even/Odd ENB), and the
Heat Select signals (HSEL1A0, 1A1, 1B0, 1B1, 2A0, 2A1, 2B0, 2B1) to select the
heaters to turn on. Turning HENB 0 and 2 on drives the Black BJ cartridge's large
heater while HENB 1 and 3 drive the small heater. A Heat ENABLE signal consists
of a pre-pulse and main pulse so that heater drive pulse width can be adjusted
according to the monitored head rank and internal temperature, etc., to always
ensure optimum ink discharge.
Part 4: Technical Reference
BJC-6000
4-4
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:
C: Heat Select 2A
D: Heat Select 2B
BE0
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/160
BE0 - BE3: Block ENABLE1-8
A: Heat Select 1A
B: Heat Select 1B
E: Even ENABLE
O: Odd ENABLE
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Figure4-4 Printing Sequence (Black BJ cartridge, HQ mode)
- QY8-1361-000 1
- 0199 SE 0.30-0 2
- CANON INC 4
- I. ABOUT THIS MANUAL 5
- II. TABLE OF CONTENTS 6
- Part 4: TECHNICAL REFERENCE 7
- III. ILLUSTRATION INDEX 10
- Part 5: MAINTENANCE 11
- IV. TABLE INDEX 12
- SAFETY AND 13
- PRECAUTIONS 13
- 1. SAFETY PRECAUTIONS 15
- 2. MACHINE PRECAUTIONS 19
- 3. NOTES ON SERVICING 25
- SPECIFICATIONS 29
- 1. PRODUCT OUTLINE 31
- 2. SPECIFICATIONS 36
- OPERATING 47
- INSTRUCTIONS 47
- 1. PRINTER SETUP 49
- 2. TRANSPORTING THE PRINTER 59
- 3. PRINTER SERVICE FUNCTIONS 60
- TECHNICAL 71
- REFERENCE 71
- 1. OVERVIEW 73
- 2. FIRMWARE 82
- BJC-6000 100
- Operator Panel 109
- Internal Temperature 109
- 5. DETECTION FUNCTIONS 114
- MAINTENANCE 117
- 1. MAINTENANCE 119
- 2. SERVICE TOOLS 120
- 3. APPLYING GREASE 121
- 4. DISASSEMBLY AND REASSEMBLY 122
- 5. ADJUSTMENTS AND SETTINGS 126
- 6. TROUBLESHOOTING 131
- 1. ROM Error 136
- 2. RAM Error 136
- 3. EEPROM 136
- 4. Home Position 137
- 5. Temperature 140
- Sensor Error 140
- 6. Waste Ink Full 140
- Temperature 141
- Error/Head 141
- 8. Cartridge 142
- Displaced 142
- 9. Paper Feed 143
- 10. Ink Out Error 145
- Automatic 147
- Head Position 147
- Adjustment 147
- 1. Power Does 148
- Not Turn On 148
- 2. Faulty 149
- Printing: No 149
- Printing 149
- 3. Faulty 150
- Printing: Blank 150
- Lines Appear 150
- 4. Faulty 152
- Printing: Other 152
- 5. Ink Out 153
- Resulting in 153
- 8. CIRCUIT DIAGRAMS 165
- The printing paper contains 174
- 70% waste paper 174
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