Table 1-10 Image formation process
Functional block Steps Description
Latent image formation 1. Primary charging
2. Laser-beam exposure
An invisible latent image forms on the surface of the
photosensitive drums.
Development 3. Development Toner adheres to the electrostatic latent image on the
photosensitive drum.
Transfer 4. Transfer
5. Separation
The toner image transfers to the paper.
Fusing 6. Fusing The toner fuses to the paper to make a permanent
image.
Drum cleaning 7. Drum cleaning Residual toner is removed from the drum.
Step 1: Primary charging
To prepare for latent image formation, the surface of the photosensitive drum is charged with a uniform
negative charge. The primary charging roller receives the primary charging bias, and then the roller charges
the drum directly.
Figure 1-13 Primary charging
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