Forming Latent Static Images; Outline - Canon CP660 Service Manual

II. FORMING LATENT STATIC IMAGES
A.

Outline

The latent static image formation block consists of the drum cartridge and the pre-
exposure LED assembly.
The drum cartridge houses the photosensitive drum, primary charging roller, waste
toner case, drum cartridge memory, toner feeding roller, and stirring plate.
The photosensitive drum, toner feeding roller, and stirring plate are rotated by the
drum motor (M2), and the primary charging roller rotates in conjunction with the photo-
sensitive drum.
The waste toner inside the drum cartridge is monitored by the waste toner detecting
assembly. The life of the photosensitive drum, on the other hand, is monitored by the DC
controller PCB, and the findings are stored in the drum cartridge memory inside the drum
cartridge.
The pre-exposure LEDs are designed to expose the surface of the photosensitive
drum at specific timing.
Drum motor
M2
Primary charging
roller
Photosensitive
drum
Pre-exposure LED assembly
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DC controller PCB
assembly
Toner feeding roller
Waste toner case
Pre-exposure LED
Figure 4-201
CANON 660/2100 REV.0 FEB. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 4 IMAGE FORMATION SYSTEM
Waste toner detecting assembly
Light-
receiving
Stirring plate
Detecting
window
Light-emitting
assembly
Drum cartridge memory
Main relay PCB
PCB
4-5