Service manual

7.
TRANSFER BELT UNIT
7.1 OVERVIEW
This machine has a transfer belt. Each single color image developed on the
drum [A] is transferred separately to the transfer belt [B] by the transfer belt
corona unit [D]. After all single color images have been transferred to the
transfer belt, the full color image is then transferred to the copy paper by the
paper transfer corona unit [E]. The belt is long enough to hold an image of
A3 length, with some space to spare.
A single color image (Bk, C, M, or Y) is transferred during each transfer
cycle, so at most four transfer cycles are performed during the full color copy
process. The transfer cycles are performed in the order Bk, C, M, Y.
However, the belt may need to rotate more than once per cycle, depending
on paper size and color mode.
The transfer belt corona unit [D] applies positive bias voltage from the back
side of the transfer belt and attracts the negatively charged toner from the
drum onto the transfer belt. The bias stays on throughout the copy job.
When all color toners have been transferred to the belt, copy paper is fed to
the transfer belt. After the toner has been transferred to the copy paper, the
transfer belt cleaning blade [C] moves into contact with the belt to remove
any toner remaining on the transfer belt. The lubricant brush [F] applies a
small amount of lubricant to the surface of the transfer belt to help the
cleaning blade remove toner from the transfer belt.
[A]
[C]
[B]
[D]
[E]
[F]
Detailed
Section
Descriptions
TRANSFER BELT UNIT
SM 2-93 A166/A187/A189
CÓPIA NÃO CONTROLADA
CÓPIA NÃO CONTROLADA