Image Formation System; Overview/Configuration; Outline; Image-Formation Process - Canon LBP5050 Series Service Manual

2.4 IMAGE FORMATION SYSTEM

2.4.1 Overview/Configuration

2.4.1.1 Outline

LBP5050N / LBP5050
The image-formation system is the central hub of the printer. It forms the toner image on the media.
The following are the main components of the image-formation system:
- Four toner cartridges
- ITB
- Laser scanner unit
- Fixing unit
The DC controller controls the laser scanner unit and high-voltage power supply to form the toner image on the photosensitive drums according to the VIDEO
signals. The image is transferred to the print media through the ITB and fixed.
Tonner cartridge
ITB cleaning unit
Secondary
transfer rollet

2.4.1.2 Image-formation Process

LBP5050N / LBP5050
The image-formation process consists of the following nine steps divided among six functional blocks:
Block 1: Latent image formation
Step 1: Primary charging
Step 2: Laser-beam exposure
Block 2: Development
Step 3: Development
Block 3: Transfer
Step 4: Primary transfer
Step 5: Secondary transfer
Step 6: Separation
Block 4: Fixing
Step 7: Fixing
Block 5: ITB cleaning
Step 8: ITB cleaning
Block 6: Photosensitive drum cleaning
Step 9: Drum cleaning
Fixing unit
Laser scanner unit
ITB
High-voltage power supply
F-2-3
Laser beam
Photosensitive drum
Primary transfer pad
DC controller
Chapter 2
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