Canon imageRUNNER ADVANCE C5051 Series Service Manual page 80

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Technology■>■Image■Formation■System■>■Overview■>■Print■process
■ Parts■configuration ■
● Major■Parts ■
Toner container
Y M C
Toner supply
assembly
Y M
Laser scanner unit
2 Technology■>■Image■Formation■System■>■Overview■>■Print■process
Bk
Transfer
assembly
C Bk
Waste toner case
Developing assembly
+ Drum unit
■ Print■process ■
ITB cleaning block
9. ITB cleaning
5. Primary transfer
4. Developing
Developing block
Y
3. Laser exposure
Photosensitive
drum
2. Primary charging
Static latent image
F-2-63
formation block
● Overview ■
Static■latent■ 1 Pre-exposure
image■
formation■block 2 Primary■charging
3 Laser■exposure
Developing■ 4 Developing
block
Transfer■block 5 Primary■transfer
6 Secondary■transfer To■apply■positively-charged■potential■to■the■secondary■
7 Separation
Fixing■block 8 Fixing■
ITB■cleaning■ 9 ITB■cleaning
block
Drum■cleaning■ 10 Drum■cleaning
block
Delivery
ITB
5. Primary transfer 5. Primary transfer 5. Primary transfer
10. Drum cleaning
1.Pre-exposure
M C Bk
Photosensitive Photosensitive Photosensitive
drum drum drum
Drum
cleaning
block Pickup
Flow of print paper
Rotating direction of ITB, photosensitive drum
To■remove■residual■charge■on■the■surface■of■photosensitive■
drum■by■exposure■of■pre-exposure■LED■light
To■charge■the■surface■of■photosensitive■drum■to■be■
uniformed■negative■potential
To■create■static■latent■image■on■the■surface■of■
photosensitive■drum■by■emitting■laser■light■(image■exposure:■
laser■exposure■area■becomes■image■area)
To■attach■negatively-charged■toner■from■the■developing■
cylinder■to■the■photosensitive■drum■by■non-negative■
2-component■jumping■developing■method.
To■apply■positively-charged■potential■from■the■back■surface■
of■ITB■to■transfer■toner■on■the■surface■of■photosensitive■
drum■to■ITB.
transfer■outer■roller■to■transfer■toner■on■the■ITB■to■the■paper.
To■separate■paper■from■the■ITB■by■curvature■separation■
method.■In■the■case■of■thin■paper■which■has■low■elastic■
force,■the■static■eliminator■reduces■potential■on■the■surface■
of■paper■to■separate■thin■paper■more■easily.
To■fix■toner■on■the■paper■with■heat■and■pressure.
To■remove■residual■toner■on■the■ITB■by■the■cleaning■blade.
To■remove■residual■toner■on■the■photosensitive■drum■by■the■
cleaning■blade.
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Fixing block
8. Fixing
Transfer block
7. Separation
6. Secondary transfer
Registration
F-2-64
T-2-27
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