Electrically charging method and electrically charging device us

Details Electrically charging method and electrically charging device us Electrically charging method and electrically charging device us

1994-09-28

1997-08-19

Royer, William J.

Electrophotography

Image formation

Charging

361221, 361225, G03G 1502

Patent

active

056598530

ABSTRACT:
A method of electrically charging a material to be charged by bringing a charging member impressed with a voltage into physical contact with the material to be charged, wherein the charging member is constituted by a flexible and electrically conducting endless sheet and a rotary insulating brush which supports the endless sheet at a position where the endless sheet and the material to be charged are in contact with each other and gives a pushing force to the endless sheet, and the endless sheet is driven actively or passively together with the insulating brush at a speed substantially in synchronism with the material to be charged while applying a charging voltage to the endless sheet. This method makes it possible to uniformly and stably charge the surface of the photosensitive material even when defects such as pinholes or the like exist in the surface of the photosensitive material, without causing the life of the photosensitive material to be shortened.

REFERENCES:
patent: 3935517 (1976-01-01), O'Brien
patent: 5148219 (1992-09-01), Kohyama
patent: 5196892 (1993-03-01), Mitsuaki
patent: 5206682 (1993-04-01), Yamada et al.
patent: 5243387 (1993-09-01), Ikegawa
patent: 5278614 (1994-01-01), Ikegawa
patent: 5384626 (1995-01-01), Kugoh et al.
patent: 5483323 (1996-01-01), Matsuda
patent: 5532795 (1996-07-01), Tatsumi

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