COPYRIGHT © 1999 CANON INC. CANON CLC1120/1130/1150 REV.0 MAR. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 6
IMAGE FORMATION SYSTEM
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
D. Controlling the Concentration of
Black Toner .......................... 6-35
E. Supplying Toner .................. 6-48
V.
PHOTOSENSITIVE DRUM
CLEANER ASSEMBLY ............ 6-49
A. Outline ................................. 6-49
B. Controlling the Reciprocating
Mechanism of the Cleaning
Blade ................................... 6-50
C. Controlling the Collection of
Waste Toner ........................ 6-50
VI. DISASSEMBLY/ASSEMBLY .... 6-52
A. Photosensitive Drum
Assembly ............................. 6-53
B. Pre-Exposure Lamp ............ 6-61
C. Charging Assembly ............. 6-62
D. Developing
Assemblies .......................... 6-65
E. Hoppe Assembly ................. 6-74
F. Photosensitive Drum Cleaner
Assembly ............................. 6-78
G. Pre-Cleaning Sensor Assembly
No. 2 Scoop-Up Sheet
Assembly ............................. 6-81
H. Black Toner Concentration
Sensor Assembly ................ 6-82
I. Cleaner Blade Reciprocating
Motor ................................... 6-83
J. Waste Toner Feeding
Assembly ............................. 6-83
K. Developing Drive
Assembly ............................. 6-85
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.
Summary of Contents for CLC 1120
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