COPYRIGHT © 1999 CANON INC. CANON NP6320 REV.0 DEC. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
iv
I. IMAGE FORMATION SYSTEM ...4-1
A. Outline...................................4-1
B. Basic Operation of Image
Formation System .................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 THE
DEVELOPING BIAS ....................4-8
A. Outline...................................4-8
B. Operation ..............................4-9
C. Developing Bias
Operation ........................... 4-11
V. DOCUMENT DENSITY
MEASUREMENT SYSTEM ...... 4-12
A. Outline................................ 4-12
B. Operation ........................... 4-12
C. Reading the Output of the AE
Sensor................................ 4-13
VI. DEVELOPING ASSEMBLY/
DRUM CLAENER ..................... 4-14
A. Outlines .............................. 4-14
B. Remaining Toner Sensor.... 4-14
C. Torque Limiter .................... 4-14
VII. BLANKING................................ 4-15
A. Outline................................ 4-15
B. Movement of the Blank
Exposure Mechanism ........ 4-16
VIII.DISASSEMBLY AND
ASSEMBLY ............................... 4-18
A. Exposure Assembly ........... 4-18
B. Blank Assembly.................. 4-20
C. CORONA SYSTEM............ 4-21
D. Development System ......... 4-24
I. PAPER TRANSPORT
SYSTEM ......................................5-1
A. Paper Pick-up Assembly and
Feeder ...................................5-1
B. Pick-up and Feeder
Operation ..............................5-3
C. Identifying the Cassette
Size .......................................5-4
D. Pick-Up from the
Multifeeder.............................5-5
II. JAM DETECTION ........................5-7
A. Pick-up Assembly Delay
Jam........................................5-8
B. Delivery Assembly Stationary
Jam........................................5-9
C. Delivery Assembly Delay
Jam........................................5-9
III. FEEDER SYSTEM.................... 5-10
A. Pick-up Assembly............... 5-10
B. Feeder Assembly ............... 5-17
C. Main Motor Assembly......... 5-21
CHAPTER 4 IMAGE FORMATION SYSTEM
CHAPTER 5 PICK-UP/FEEDING SYSTEM