Development Block; Transfer Block - Canon LBP3010 Series Service Manual

Chapter 2

2.4.1.4 Development Block

LBP3100 / LBP3010B
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.
Blade
Exposed area
Unexposed area

2.4.1.5 Transfer Block

LBP3100 / LBP3010B
This block is comprised of two steps; it transfers toner images on the surface of the photosensitive drum to papers.
Step 4: Transfer
In this step, toner images on the photosensitive drum are transferred to papers.
This equipment applies DC positive bias to the transfer roller facing the photosensitive drum and charges papers positively. This enables toner negatively charged
on the surface of the photosensitive drum to be transferred to papers.
2-8
Laser beam
Unexposed area Exposed area
F-2-9
Developing cylinder
Photosensitive drum
F-2-10
Unexposed area
Exposed area
0019-5407
AC bias
DC bias
0019-5408