Image transfer device

Details Image transfer device Image transfer device

2007-12-25

2007-12-25

Gray, David M. (Department: 2852)

Electrophotography

Control of electrophotography process

Control of transfer

C399S121000, C399S310000

Reexamination Certificate

active

11119233

ABSTRACT:
An image transfer device includes an image transfer electrode roller which is disposed face to face with a photosensitive drum with a printing sheet passing between the image transfer electrode roller and the photosensitive drum. The image transfer device is structured such that the image transfer electrode roller can be shifted back and forth along a transport direction of the printing sheet. A voltage is applied to the image transfer electrode roller to create an image transfer electric field between the image transfer electrode roller and the photosensitive drum for transferring a toner image formed on the photosensitive drum onto the printing sheet. The image transfer electrode roller is brought to one of different positions along a transport direction of the printing sheet selected according to information on properties of the printing sheet and transfers the toner image onto the printing sheet at that position.

REFERENCES:
patent: 6044244 (2000-03-01), Watanabe et al.
patent: 2004/0005175 (2004-01-01), Lee
patent: 03-225384 (1991-10-01), None
patent: 03225384 (1991-10-01), None
patent: 05-011625 (1993-01-01), None
patent: 09-006145 (1997-01-01), None

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