Toshiba e-STUDIO 206 - Page 64

e-STUDIO166/206 © February 2007 TOSHIBA TEC CORPORATION All rights reserved
COPY PROCESS
3 - 10
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.
- Output is controlled as follows to realizes the desirable separability.
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.
Fig. 3-18
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.
Fig. 3-17
Paper position against transfer point Separation output
From leading edge to 11mm from leading edge (H) -107 µADC
From 11mm from leading edge to 46mm from leading edge (L) -70 µADC
From 46mm from leading edge to 48mm from trailing edge (C) -107 µADC
From 48mm from trailing edge to trailing edge (L) -70 µADC
Separation charger
Direction of
transportation
Drum
rotation
Separation
charger
Paper
movement
Drum rotation
Separation finger