Canon NP6317 Service Manual page 6

CHAPTER 4 IMAGE FORMATION SYSTEM
I. PROCESSES ...............................4-1
A. Outline ...................................4-1
B. Basic Operation of Image
Formation System
(black developing assembly,
2 copies) ................................4-2
II. CONTROLLING THE SCANNING
LAMP ...........................................4-3
A. Outline ...................................4-3
B. Mechanism ............................4-4
III. PRIMARY/TRANSFER
CORONA CURRENT AND GRID
BIAS VOLTAGE CONTROL
SYSTEM ......................................4-5
A. Outline ...................................4-5
B. Switching Primary/Transfer
Corona Current ON/OFF .......4-5
C. Maintaining Primary/Transfer
Corona Current Constant ......4-6
D. Controlling Grid Bias
Voltage ..................................4-7
IV. CONTROLLING DEVELOPING
BIAS .............................................4-8
A. Outline ...................................4-8
CHAPTER 5 PICK-UP/FEEDING SYSTEM
I. PAPER PICK-UP ASSEMBLY AND
FEEDER.......................................5-1
A. Outline ...................................5-1
B. Pick-up and Feeder
Operation ..............................5-3
C. Identifying the Paper Size .....5-4
D. Pick-Up from the
Multifeeder .............................5-5
II. JAM DETECTION ........................5-7
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B. Operation ..............................4-9
V. DOCUMENT DENSITY
MEASUREMENT SYSTEM ...... 4-11
A. Outline ................................ 4-11
B. Operation ........................... 4-11
C. Reading the Output of the AE
Sensor ................................ 4-12
D. Adjustment ......................... 4-13
VI. DEVELOPING ASSEMBLY/
DRUM CLAENER ..................... 4-14
A. Outlines .............................. 4-14
B. Remaining Toner Sensor .... 4-14
C. Torque Limiter..................... 4-15
VII. BLANKING ................................ 4-16
A. Outline ................................ 4-16
B. Movement of the Blank
Exposure Mechanism ........ 4-17
VIII. DISASSEMBLY AND
ASSEMBLY ............................... 4-19
A. Main Motor Assembly ......... 4-19
B. Corona System .................. 4-20
C. Primary/Transfer Corona
Assembly ............................ 4-22
D. Development System ......... 4-25
A. Pick-up Assembly Delay
Jam ........................................5-8
B. Delivery Assembly Stationary
Jam ........................................5-9
C. Delivery Assembly Delay
Jam ..................................... 5-10
III. FEEDER SYSTEM.................... 5-11
A. Pick-up Assembly ............... 5-11
B. Feeder Assembly ............... 5-17
CANON NP6317 REV.0 APR. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)