Chapter 4 Image Formation System; Processes; Outline - Canon NP6218 Service Manual

I. PROCESSES
A. Outline
Figure 4-101 shows the basic construction of the copier's image formation system,
whose main functions are as follows:
• scanning lamp control
• primary charging control
• transfer charging control
• separation static eliminator control
• developing bias control
• blank exposure lamp control
Pre-exposure lamp
Primary corona assembly
Cleaning blade
Blade
Composite Power Supply PCB
COPYRIGHT © 1997 CANON INC.
Scanning lamp
- - - - -
+ + + ++
-
-
+ +
-
+ +
-
Photosensitive
Scoop-up sheet
Paper
Sttic eliminator
DC controller PCB
Figure 4-101
CANON NP6218 REV. 0 MAY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)

CHAPTER 4 IMAGE FORMATION SYSTEM

Optical
image
Light area
-
Dark
- -
-
+ + +
- area
+ +
- -
+ +
- -
+ +
drum
+
- -
+
+ +
+
+
+ +
+ +
+ +
+ +
Transfer corona
assembly
Blade
Developing
cylinder
4-1