Toshiba e-STUDIO182 Service Manual page 72

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
Leading edge
Middle (leading edge side)
Middle (trailing edge side)
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-STUDIO182/212/242
COPY PROCESS
(H)
(L)
(C)
(L)
Separation finger
Paper
movement
Drum rotation
Fig. 3-18
3 - 10
Drum
rotation
Separation charger
Direction of
transportation
Fig. 3-17
Separation output
-107 µADC
-70 µADC
-107 µADC
-70 µADC
Separation
charger
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