Electrophotographic apparatus that prevents toner from attaching

Details Electrophotographic apparatus that prevents toner from attaching Electrophotographic apparatus that prevents toner from attaching

1996-02-09

1997-11-25

Lee, S.

Electrophotography

Control of electrophotography process

Control of developing

399 50, 399 66, 399260, 399313, 399314, G03G 1508

Patent

active

056922329

ABSTRACT:
At start of rotation of a photosensitive drum, rotation of a developing roller caused by a developing/register rollers driver is kept stopped until a time required for a predetermined point on the photosensitive member, which was located at a charging position when charging thereof by a charging device was started, to reach a development position elapses, and thereafter the developing roller is rotated by the developing/register rollers driver. When the predetermined point on the photosensitive member, which was located at the developing position when at least rotation of the photosensitive member was started, passes the transfer position, a roller cleaning voltage having the same polarity as the charge polarity of toner is applied to a transfer roller.

REFERENCES:
patent: 5182604 (1993-01-01), Asai
patent: 5239345 (1993-08-01), Kikuchi et al.
patent: 5270786 (1993-12-01), Kikuchi et al.
patent: 5287149 (1994-02-01), Hoshika
patent: 5438395 (1995-08-01), Koga et al.

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