Major Parts; Print Process - Canon imageRUNNER ADVANCE C255 Series Service Manual

■ Parts Configuration
● Major Parts
ITB Unit

■ Print Process

ITB cleaning block
8.ITB cleaning
3.Development
Developing block
2.Laser exposure
1.Primary charging
Static latent image
formation block
No. Block name
1 Static latent image forma-
tion block
2
3 Developing block
Y
M
Y
M
Laser Scanner Unit
4.Primary
4.Primary
transfer transfer
Y
Photosensitive
M
Drum
Photosensitive
Drum
9.Drum cleaning
Drum cleaning block
Process name
Primary charging The surface of the Photosensitive Drum is charged to make a uniform neg-
ative potential.
Laser exposure Emission of the laser light forms a static latent image on the surface of the
Photosensitive Drum. (Image exposure: laser exposed area becomes im-
age area)
Development With the dry, 2-component AC developing method, toner that has been
negatively charged by the Developing Cylinder is attached to the Photo-
sensitive Drum.
C
Bk
C
Bk
Delivery
Fixing block
Transfer block
ITB
5.Secondary transfer
4.Primary 4.Primary
transfer transfer
C
Photosensitive Photosensitive
Drum Drum
Pickup
Flow of print paper
Rotating direction of ITB,
photosensitive drum
Description
52
2. Technology
Hopper Unit
Toner Container
Drum Unit
7.Fixing
6.Separation
Bk
Registration