Canon NP6320 Service Manual page 6

CHAPTER 4 IMAGE FORMATION SYSTEM
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
CHAPTER 5 PICK-UP/FEEDING SYSTEM
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
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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
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
CANON NP6320 REV.0 DEC. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)