Canon NP6330 Service Manual page 97

IMAGE FORMATION SYSTEM
This chapter describes the outline of the purposes, roles and operations of image
formation process, the relationship between electric system and mechanical system
and the operational timing of each component.
I. PROCESSES .....................................4-1
A. Outline ...........................................4-1
B. Basic Sequence of Operations
(image formation) ..........................4-2
C. Controlling the Scanner Lamp.......4-3
D. Controlling the Primary/
Transfer Corona Current
and the Grid Bias ..........................4-5
E. Controlling the Static Eliminator
Bias/Fixing Roller Bias ..................4-9
F. Controlling the Developing Bias ....4-11
G. Controlling Blank Exposure ...........4-14
H. Mesuring the Density of
Originals ........................................4-16
I. Cleaning the Transfer Charging
Wire ...............................................4-19
COPYRIGHT © 1997 CANON INC.
CHAPTER 4
CANON NP6330 REV.0 MAY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)
II. DEVELOPING ASSEMBLY/
DRUM CLEANER...............................4-21
A. Outline ...........................................4-21
B. Detecting the Level of Toner and
Controlling the Supply ...................4-23
C. Stopping the Hopper Motor in
Response to a Rotation Error........4-24
III. DISASSEMBLY AND ASSEMBLY......4-25
A. Scanning Lamp Assembly.............4-25
B. Blank Exposure Lamp Assembly ..4-28
C. Drum Unit ......................................4-34
D. Charging Assembly .......................4-36
E. Developing System .......................4-42