Table 1-14 Sensors (continued)
Abbreviation Component Replacement part number
Pre-exposure LEDs 1, 2, and 3 Pre-exposure PCA assembly (RM2-7168-000CN)
Pre-exposure LED 4 Pre-exposure PCA assembly (RM2-7169-000CN)
The image-formation process consists of ten steps divided into six functional blocks.
Figure 1-13 Image-formation process
: Paper path
: Direction of drum rotation
: Functional block
: Step
Pickup
Delivery
Fusing
Transfer
Drum cleaning
Developing
Latent image formation
8. Fusing
7. Separation
6. Secondary transfer
10. Drum cleaning
2. Primary charging 1. Pre-exposure
3. Laser-beam exposure
5. Primary transfer
4. Developing
YMC K
ITB cleaning
9. ITB cleaning
Table 1-15 Image formation process
Functional block Steps Description
Latent image formation 1. Pre-exposure
2. Primary charging
3. Laser-beam exposure
An invisible latent image forms on the surface of the
photosensitive drums.
Development 4. Development Toner adheres to the electrostatic latent image on the
photosensitive drums.
Transfer 5. Primary transfer
6. Secondary transfer
7. Separation
The toner image transfers to the ITB and then to the
paper.
ENWW Engine laser/scanner system 33
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