Image forming apparatus for supressing the effects of a...

Details Image forming apparatus for supressing the effects of a... Image forming apparatus for supressing the effects of a...

2011-06-28

2011-06-28

Gray, David M (Department: 2852)

Electrophotography

Control of electrophotography process

Control of cleaning

Reexamination Certificate

active

07970310

ABSTRACT:
In the image forming apparatus, in ending an image forming operation, a bias voltage having an opposite polarity from the transfer bias voltage is applied to the primary transfer device when at least a region passes through the primary transfer portion, the region passing through the development portion in a state in which the development bias voltage is applied in an uncharged region in the surface of the image bearing member after a charging operation of the charging device is stopped.

REFERENCES:
patent: 5287149 (1994-02-01), Hoshika
patent: 5321471 (1994-06-01), Ito et al.
patent: 5740493 (1998-04-01), Otaki et al.
patent: 6081679 (2000-06-01), Yamane et al.
patent: 6496677 (2002-12-01), Fujimori
patent: 7321741 (2008-01-01), Sakamaki et al.
patent: 2004/0213594 (2004-10-01), Takayanagi
patent: 2005/0074249 (2005-04-01), Nishimura
patent: 2006/0083527 (2006-04-01), Sakamaki
patent: 2003-280483 (2003-10-01), None
patent: 2003280483 (2003-10-01), None
Machine English translation of JP2003-280483.

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