Toshiba e-STUDIO 550, Service Manual

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JUNE 2002 © TOSHIBA TEC 3 - 7 e-STUDIO550/650/810 COPY PROCESS
Combined use of transfer belt and
separation finger
To prevent the copy paper from failing to
be separated during the operation, due to
incomplete transfer belt charging or
absorption of moisture, and thus jamming
up the cleaner, a separation finger
mechanically separates any copy paper
which fails to be separated.
(6) Transfer/Separation
Transfer:
Transfer is a process of transfering the toner image
(visible image) formed on the drum surface onto the
paper.
An electric charge applied by the high voltage power
supply flows to the transfer belt from the power
supply roller. Then it flows to the paper and photo
conductor. The toner, which has been developed
on the photo conductor, is transfered to this paper
with an electric charge.
Separation:
The paper is absorbed to the belt and separated
from the drum by the electrostatic attraction acting
between the belt (plus charge) and the polarization
charge (minus charge) on the bottom surface of the
paper.
Drum
Paper
Transfer
belt
Rotation of drum
Transfer belt
Paper movement
Separation finger
Reference
•
Drum
E
Toner
Transfer belt
Power supply roller
Paper
Aluminum conductive base
Photoconductive layer