Toshiba e-STUDIO163 Service Manual page 62

7) Separation
Separation is the process of separating paper which is temporarily adhering to the drum due to the
static electricity during the transfer process.
Method: Apply negative DC bias to the separation
charger.
The positive charge on the paper is decreased.
The electrostatic adherence force between the
paper and drum becomes weak.
The paper is separated from the drum by its
own stiffness.
- Output is controlled as follows to realizes the desirable separability.
Paper position against transfer point
From leading edge to 11mm from leading edge
From 11mm from leading edge to 46mm from leading edge
From 46mm from leading edge to 48mm from trailing edge
From 48mm from trailing edge to trailing edge
Paper may not be separated from the drum surface because of moisture or malfunction of the
transfer/separation charger during printing. As the result, the paper enters into the cleaner and
causes jamming. To prevent this, a separation finger is used to forcibly separate the paper which
was left around the drum.
e-STUDIO163/203
COPY PROCESS
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Separation finger
Drum rotation
Fig. 3-18
3 - 10
Drum
rotation
Separation output
(H) -107 µADC
(L) -70 µADC
(C) -107 µADC
(L) -70 µADC
Paper
movement
Separation
charger
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Separation charger
Direction of
transportation
Fig. 3-17