Printing Process - Canon LBP 2460 - B/W Laser Printer Service Manual

CHAPTER 2
B. Printing Process
A major portion of the image formation system is contained with a cartridge as shown in Figure
2-4-2.
Primary charging roller
Cleaning blade
Photosensitive drum
This printer's cartridge has a seamless photosensitive drum with a two-layer surface shown in
Figure 2-4-3.
The outer layer of the drum consists of an organic photoconductor (OPC) and the base is
aluminum.
The printing process can be divided into five major stages.
1. Electrostatic latent image formation stage
Step 1 Primary charge (-)
Step 2 Scanning exposure
2. Developing stage
Step 3 Development
3. Transfer stage
Step 4 Transfer (+)
Step 5 Separation
4. Fixing stage
Step 6 Fixing
2 - 34
Laser beam
Blade
Transfer charging roller
Static charge eliminator
Figure 2-4-2
Photoconductive
layer
Base
Figure 2-4-3
Cartridge
Developing cylinder