Transfer Block; Fixing Block; Drum Cleaning Block - Canon mf6600 Series Service Manual

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Technical Overview > Image-formation System > Image-formation Process > Drum Cleaning Block
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Transfer Block

During the two steps that comprise this block, a toner image on the photosensitive drum is
transferred to the print media.
Step 4: Transfer
The transfer bias is applied to the transfer roller to charge the print media positive. The
positively charged media attracts the negatively charged toner from the photosensitive
drum surface.
Photosensitive
drum
Transfer roller
Transfer bias
Step 5: Separation
The elasticity of the print media and the curvature of the photosensitive drum cause the
media to separate from the drum surface. The static charge eliminator reduces back side
static discharge of the media for stable media feed and image quality.
Photosensitive
drum
Static charge
eliminator
Transfer roller
2 Technical Overview > Image-formation System > Image-formation Process > Drum Cleaning Block
Media
F-2-21 F-2-21
Media
F-2-22 F-2-22
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Fixing Block

The toner image is fixed onto the print media.
Step 6: Fixing
The printer uses an on-demand Fixing method. The toner image is permanently affixed
to the print media by heat and pressure. The Fixing bias is applied to the Fixing Film to
improve image quality.
Fixing film
Fixing bias
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Drum Cleaning Block

The residual toner is cleared from the photosensitive drum surface.
Step 7: Drum Cleaning
The cleaning blade scrapes the residual toner off the surface of the photosensitive drum.
The residual toner is deposited in the toner collection box.
Cleaning blade
Toner
collection box
Fixing heater
Toner
Media
Pressure roller
F-2-23 F-2-23
Photosensitive
drum
F-2-24 F-2-24
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