Canon LBP6000 Series, Руководство по обслуживанию

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Chapter 2
2-16
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Step 2: Laser beam exposure
In this step, static latent images are formed on the photosensitive drum with laser beam.
When laser beams are scanned on the photosensitive drum negatively charged, bright areas lose their charges, eliminating negative potential on the surface of the
photosensitive drum; on those portions, static latent images are formed.
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2.4.1.11 Development Block
0025-1155
LBP6000 / LBP6000B
This block is comprised of one step; it puts toners to the static latent images on the surface of the photosensitive drum and visualizes the images using toner pro-
jection development. The toner projection development makes the toner jump on the surface of the photosensitive drum and develops the images.
The toner (developer) used for this equipment is a one-component toner that comprises magnetic body and resin, etc.
Step 3: Development
Toner is affixed to static latent images on the surface of the photosensitive drum.
The toner is charged negatively by friction between the developing cylinder and the surface of the developing blade.
An area on the photosensitive drum exposed with laser beam has higher potential than the developing cylinder; the potential difference between the drum surface
and the cylinder enables the toner to jump on the drum surface and makes them visible images.
AC bias superimposed with the development DC negative bias is applied to the developing cylinder.
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Primary charging roller
Photosensitive drum
DC bias
Laser beam
Unexposed area Exposed area
Blade
Developing cylinder
AC bias
DC bias
Photosensitive drum
Unexposed area
Exposed area
Exposed area
Unexposed area