Static Image Formation Block - Canon Color iR C3480 Service Manual

Chapter 7
ITB cleaning block
Development
block
Static image formati
A. Static Image Formation Block
Forms a static image on the surface of the photosensitive drum.
step 1: primary charging (charges the surface of the drum to an even negative potential)
step 2: laser beam exposure (forms a static image on the surface of the photosensitive drum)
B. Developing Block
Deposits toner over the static image on the surface of the photosensitive drum, thus turning it into a visible image.
step 3: development
C. Transfer Block
Moves the toner image from the surface of the photosensitive drum to print paper.
step 4: primary transfer (moves toner from the surface of the photosensitive drum to the ITB)
step 5: secondary transfer (moves toner from the ITB to paper)
step 6: separation (separates paper from the ITB)
D. Fixing Block
Fuses the toner image to the paper.
step 7: fixing
E. ITB Cleaning Block
Cleans the ITB by removing residual toner.
step 8: ITB cleaning (removes residual toner from the ITB)
F. Drum Cleaning Block
Removes residual toner from the surface of the photosensitive drum to prepare for the next print job.
step 9: drum cleaning (removes residual toner from the surface of the photosensitive drum)
step 10: post-exposure (prevents uneven density by evening out the surface of the photosensitive drum)

7.1.4 Static Image Formation Block

Color iR C3380G / Color iR C2880G / Color iR C3380i / Color iR C3380 / Color iR C2880i / Color iR C2880 / iR C3480 / iR C3480i / iR C3080 / iR C3080i / iR
C2550
This block consists of 2 steps, at the end of which a static image is formed on the surface of the photosensitive drum.
At the end, those areas of the surface of the photosensitive drum that have not been exposed by the laser beam (dark area) retain negative charges, while those
exposed by the beam are free of negative charges. The resulting static image is not visible to the human eye and, thus, is called a static "latent" image.
7-4
8.ITB cleaning
3.Development
Y
9.Drum cleaning
photosensitive
drum
2.laser beam
10.post
M
exposure
-exposure
photosensitive drum
1.primary charging
Drum
on block cleaning
block
Delivery
C
photosensitive drum
Bk
photosensitive drum
Pickup
flow of paper
rotation of ITB/photosensitive drum
F-7-2
Fixing block
7.fixing
Transfer block
6.separation
5.secondary
transfer
0013-8463