Image forming apparatus for forming images in accordance with an

Details Image forming apparatus for forming images in accordance with an Image forming apparatus for forming images in accordance with an

1995-10-19

1997-12-09

Grimley, Arthur T.

Electrophotography

Control of electrophotography process

Control of developing

399150, G03G 1500

Patent

active

056970137

ABSTRACT:
An image forming apparatus performs an electrophotographic process including a uniform charging step, an exposure step, a developing step and a transfer step on a photosensitive drum which is driven so that an image is formed on a recording medium. The image forming apparatus includes a discharging unit for discharging the photosensitive drum which has been uniformly charged, a discharging control unit for controlling said discharging unit before the photosensitive drum is stopped so that a potential distribution is obtained in an area having a predetermined width starting from a position at which said discharging unit starts to discharge said photosensitive drum, the potential distribution being between a first potential obtained by charging said photosensitive drum and a second potential, a stop control unit for performing an operation for stopping driving said photosensitive drum in a state where a developing position enters the area having the potential distribution, and a bias control unit for turning off a developing bias used in the developing step in the state where the developing position enters the area having the potential distribution.

REFERENCES:
patent: 4319544 (1982-03-01), Weber
patent: 4769676 (1988-09-01), Mukai et al.
patent: 4843424 (1989-06-01), Oda et al.
patent: 5036369 (1991-07-01), Toda et al.
patent: 5541717 (1996-07-01), Saito et al.

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