Canon LBP-2410 Technical Information PDF herunterladen (Seite 86)

2003 CANON INC. 2000 2000 2000 2000 CANON LBP-2410 REV.0 FEB. 2003

CHAPTER 2 OPERATION AND TIMING

2-44

4.2.3 Transfer block

This block comprises three steps, which transfers the toner image on the drum surface

onto paper.

Step 5: Primary transfer

The toner on the drum is transferred onto the ITB in this step.

A DC positive bias is applied to the primary transfer roller opposite to the drum in order

to charge the ITB positively. Then the negatively charged toner on the drum is transferred

onto the positively charged ITB. This procedure is repeated for each color (Y, M, C, Bk).

In full-color printing, as toners in four colors are piled up on the ITB, the holding force of

the toner weakens as the transfer process progresses for the 1st color, 2nd color... Therefore,

after transferring the first color, the DC positive bias is increased for each color in order to

supplement the holding force of the toner.

F02-402-08

Photosensitive

drum

DC bias

Primary

transfer roller

Toner

ITB

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Canon LBP-2410 Technical Information Seite 86