Controlling The Primary Charging Mechanism And - Canon 1130 Service Manual

IMAGE FORMATION SYSTEM
This chapter explains the operations and functions of the copier's image processing
mechanisms and the relationship between electrical and mechanical systems, and provides an
outline of the timing at which various associated parts are driven.
I. IMAGE FORMATION SYSTEM...6-1
A. Outline ....................................6-1
B. Controlling the C Sensor ........6-3
C. Sequence of Operations
(image formation system) .......6-7
II. IMAGE STABILIZATION ...............6-8
A. Outline ....................................6-8
B. Controlling the Surface
Potential of the Drum ............6-10
III. CONTROLLING THE CHARGING
MECHANISM ........................... 6-17
A. Controlling the Primary
Charging Mechanism and
the Grid Bias ....................... 6-17
B. Controlling the
Developing Bias .................. 6-18
C. Controlling the Attraction
Charging Mechanism and
Transfer Charging Current... 6-20
D. Controlling the Separation
Charging Current ................ 6-21
E. Controlling the External/Internal
Static Eliminating Current ... 6-23
F. Controlling the Post-Cleaning
Charging Current ................ 6-24
G. Controlling the Temperature of
the Photosensitive Drum ..... 6-25
H. Controlling the Primary Charging
Wire Cleaning Mechanism .. 6-27
IV. DEVELOPING
ASSEMBLIES .......................... 6-28
A. Outline ................................. 6-28
B. Locking the Developing
Assembly ............................. 6-29
C. Controlling the Concentration
of Color Toner .......................6-31
COPYRIGHT © 2002 CANON INC.
CHAPTER 6
CANON CLC1100/1130/1150/1160/1180 REV.2 FEB. 2002 PRINTED IN JAPAN (IMPRIME AU JAPON)
D. Controlling the Concentration
of Black Toner .......................6-35
E. New Gradation Correction
Control (patch detection;
CLC1140/1160/1180) ........ 6-46a
F. Supplying Toner .................. 6-47
V. PHOTOSENSITIVE DRUM
CLEANER ASSEMBLY ............ 6-48
A. Outline ................................. 6-48
B. Controlling the Reciprocating
Mechanism of the Cleaning
Blade ................................... 6-49
C. Controlling the Collection of
Waste Toner ........................ 6-49
VI. DISASSEMBLY/ASSEMBLY .... 6-51
A. Photosensitive Drum
Assembly ............................. 6-52
B. Pre-Exposure Lamp ............ 6-60
C. Charging Assembly ............. 6-61
D. Developing Assemblies ....... 6-64
E. Hoppe Assembly ................. 6-73
F. Photosensitive Drum
Cleaner Assembly .................6-77
G. Pre-Cleaning Sensor
Assembly No. 2 Scoop-Up
Sheet Assembly .................. 6-80
H. Black Toner Concentration
Sensor Assembly ................ 6-81
I. Cleaner Blade
Reciprocating Motor ............ 6-82
J. Waste Toner Feeding
Assembly ............................. 6-82
K. Developing Drive
Assembly ............................. 6-84