Chapter 4 Image Formation System; Processes; Outline - Canon NP6317 Service Manual

I. PROCESSES
A.

Outline

The basic structure of the image formation system is as shown below.
• Scanning lamp control system
• Primary/transfer corona current and grid bias voltage control system
• Developing bias control system
• Document density measurement system
• Developing assembly/drum cleaning system
• Blanking system
AE sensor
Lamp
driver unit
DC controller
PCB
COPYRIGHT © 1999 CANON INC.
Scanning lamp
Pre-exposure lamp
GRID ON signal (GRDON)
HVTON command (HVTON)
AC BIAS ON command
(ACBON)
DC BIAS control command
(DCBC)
GRID BIAS control signal (GRBC)
CANON NP6317 REV.0 APR. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)

CHAPTER 4 IMAGE FORMATION SYSTEM

Lens
Photosensitive
drum
High-voltage
transformer
(HVT)
Figure 4-101
Blank exposure shutter
4-1