Image forming device

Details Image forming device Image forming device

2006-04-25

2006-04-25

Ngo, Hoang (Department: 2852)

Electrophotography

Control of electrophotography process

Control of transfer

C399S101000

Reexamination Certificate

active

07035563

ABSTRACT:
In the case that the electrical resistance of the contact transfer body15varies with the variation of the operating environment, the variation of the value of the electrical resistance is detected by the transfer body resistance detecting section and the applying time of the transfer cleaning bias is appropriately varied by the cleaning bias control section23based on the detected result. When the operating environment varies to a high temperature condition or to a high humidity condition, the applying time of the transfer cleaning bias is shortened by the cleaning bias control section23, and the continuation of the conventional overdischarged condition is avoided. Therefore, even when the value of the electrical resistance of the contact transfer body15varies according to the variation of the operating environment, the image can be formed with a high degree of quality and the shortening of the service life of the image carrier can be prevented.

REFERENCES:
patent: 6542703 (2003-04-01), Jung
patent: 6823152 (2004-11-01), Kida

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