Canon GP405 Service Manual page 11

CHAPTER 6 IMAGE FORMATION SYSTEM
I. OUTLINE OF IMAGE FORMATION
PROCESS ................................... 6-1
A. Outline ....................................6-1
B. Sequence of Operations ........6-2
C. Controlling the Primary
Charging Roller Bias .............. 6-3
D. Controlling the Transfer
Charging Roller Bias .............. 6-8
E. Controlling the Separation
Static Eliminator Bias .......... 6-12
F. Controlling the Transfer
Guide................................... 6-14
G. Primary Charging Roller
Cleaning Mechanism .......... 6-15
II. DEVELOPING ASSEMBLY ...... 6-16
A. Outline ................................. 6-16
CHAPTER 7 PICK-UP/FEEDING SYSTEM
I. OUTLINE OF OPERATIONS ......7-1
A. Outline ....................................7-1
B. Sequence of Operations
(pick-up from the cassette) ....7-4
C. Operation in Standby State . 7-16
D. Detecting the Level of Paper .. 7-18
E. Identifying the Size of Paper .. 7-20
F. Multifeeder .......................... 7-25
G. Controlling the Registration
Roller Clutch ....................... 7-27
H. Making Overlay Copies ....... 7-28
I. Operation ............................ 7-28
I. PAPER DECK .............................8-1
A. Inputs to and Outputs from
the Deck Driver ...................... 8-1
B. Pick-Up ...................................8-4
C. Detecting Paper .....................8-7
D. Deck Lifter .............................. 8-9
E. Opening/Closing the Deck
(compartment) .................... 8-12
F. Controlling the Deck Motor . 8-14
COPYRIGHT © 1999 CANON INC. CANON 405/335 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 8 PAPER DECK
B. Controlling the Developing
Bias ..................................... 6-17
C. Controlling Toner Level
Detection ............................. 6-20
III. DRUM CLEANER .................... 6-21
A. Outline ................................. 6-21
B. Detecting Waste Toner ........ 6-22
IV. DISASSEMBLY/ASSEMBLY .... 6-23
A. Drum Unit ............................ 6-24
B. Transfer Charging Roller ..... 6-25
C. Drum Sensor Unit ............... 6-25
D. Magnet Plate ....................... 6-26
E. Primary Charging Roller
Cleaning Solenoid ............... 6-27
F. Developing Assembly.......... 6-28
J. Delivery Assembly .............. 7-40
K. Detecting Jams ................... 7-43
II. DISASSEMBLY/ASSEMBLY .... 7-51
A. Pick-Up Assembly ............... 7-52
B. Multifeeder .......................... 7-55
C. Feeding Assembly ............... 7-58
D. Lower Feeding Assembly .... 7-59
E. Registration Roller Assembly ... 7-61
F. Delivery Assembly .............. 7-62
G. Lower Feeding Motor .......... 7-66
H. Pick-Up Drive Assembly ..... 7-67
I. Vertical Path Assembly ....... 7-68
II. DETECTING JAMS .................. 8-18
A. Outline ................................. 8-18
III. DISASSEMBLY/ASSEMBLY .... 8-20
A. External Covers .................. 8-21
B. Paper Deck .......................... 8-24
C. Drive System ....................... 8-29
D. Feeding System .................. 8-36
E. Electrical System ................ 8-39
ix