Canon Laser Shot LBP-5100, Service Manual

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Chapter 2
2-10
F-2-10
Step 1: Primary charging
To prepare for the formation of a latent image, the surface of the drum is charged to a uniform negative potential.
The primary charging roller operates in keeping with the photosensitive drum, and directly charges the surface of the drum. The roller is made of conducting rubber,
and a DC bias is applied to charge the surface of the photopositive drum to a negative potential.
F-2-11
Step 2: Laser beam exposure
When the laser beam is scanned over the surface of the photosensitive drum, the charges in the light area are neutralized, forming a latent (static) image.
F-2-12
2.4.1.4 Developing block
0010-6058
LBP5000 / LBP5100
In this block, toner is deposited over the latent (static) image on the surface of the photopositive drum, turning it into a visible image. The machine uses a toner
projection method to develop images in combination with non-magnetic, 1-compeonet toner.
Step 3: Developing
-100
-500
Time (t)
Exposed area
Unexposed area
Laser beam
exposure
(step2)
Transfer
(step 4)
Primary
charging
(step1)
Surf
ace potential (V)
Primary
charging
(step1)
DC bias
Photosensitive drum
Primary charging roller
Laser beam
Unexposed area
Exposed area