(6)Transfer

Transfer is the process of transferring the toner image (visible image) formed on the drum surface onto paper.

Method : A paper passing the side of the drum is charged to the opposite polarity to the that of toner by the corona discharge of the transfer charger.

The toner moves from the drum surface onto the paper.

*For smooth transfer

In the transfer bias processing of this equipment, bias voltage (+580 VDC) is applied to the pre- transfer guide to prevent the charge produced by the transfer charger from flowing into the pre- transfer guide through the paper.

The corona discharge applied to the paper is normally 286 µA DC. However, to improve transferability at the trailing edge of the paper, lower output (137 µA DC) is applied to the part 10 mm from the trailing edge.

(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 AC voltage to which the nega-

tive DC bias is added to the separation

Drum

Fig. 3-214

Drum rotation

Toner

Fig. 3-215

Paper

Transfer charger

Direction of trans- portation

Transfer charger

3

charger.

The positive charge on the paper is decreased.

The static electricity (adherence power) between the paper and drum becomes weak.

The paper is separated from the drum by its own stiffness and absorption by the fan.

© 2003 - 2008 TOSHIBA TEC CORPORATION All rights reserved 3 - 04/01

Suction fan (Sub-separation fan)

Absorbing

Drum rotation

Separation charger

Direction of trans- portation

Fig. 3-216

e-STUDIO350/352/353/450/452/453

COPY PROCESS

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Toshiba 453, 452, 350, 353 service manual Charger
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350, 353, 453, 452 specifications

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