Canon imageCLASS LBP6780dn - Transfer Block; Fixing Block; Drum Cleaning 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.
Printing paper
Transfer roller
Photosensitive
drum
Transfer bias
F-2-8
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.
Printing paper
Transfer roller
Photosensitive
drum
Static charge eliminator
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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.
Printing paper
Toner
Fixing film
Fixing heater
Pressure roller
Brush
Fixing bias
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Drum cleaning block
F-2-9
F-2-10