Canon LBP6670dn Series - Drum Cleaning Block; Fixing Block; Transfer Block

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Technology > Image Formation System > Image Formation Process > Drum cleaning block
Technology > 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.
Transfer bias
Media
Transfer roller
Photosensitive
drum
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.
Media
Transfer roller
Photosensitive
drum
Static charge
eliminator
F-2-8
F-2-9
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Fixing block
The toner image is xed onto the print media.
Step 6: Fixing
The printer uses an on-demand xing method. The toner image is permanently afxed to
the print media by heat and pressure. The xing bias is applied to the xing lm to improve
image quality.
Fixing bias
Fixing film
Toner
Pressure roller
Fixing heater
Media
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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.
Toner
collection box
Photosensitive
drum
Cleaning blade
F-2-10
F-2-11