Asymmetrical donor member voltage

Details Asymmetrical donor member voltage Asymmetrical donor member voltage

1998-10-02

1999-08-17

Moses, Richard

Electrophotography

Image formation

Development

399291, G03G 1508

Patent

active

059406674

ABSTRACT:
The present invention is an apparatus that develops a latent image recorded on a surface with toner. An electrically biased electrode member in the development zone between the photoconductive member and the donor roll detaches toners from the donor roll so as to form a toner powder cloud in the development zone. The electrical bias applied on the donor member is an asymmetrical wave. Toner from the toner powder cloud develops the latent image.

REFERENCES:
patent: 4102305 (1978-07-01), Schwarz
patent: 4565438 (1986-01-01), Folkins
patent: 4868600 (1989-09-01), Hays et al.
patent: 5144371 (1992-09-01), Hays
patent: 5204719 (1993-04-01), Bares
patent: 5206693 (1993-04-01), Folkins
patent: 5404208 (1995-04-01), Edmunds
patent: 5666619 (1997-09-01), Hart et al.
patent: 5758239 (1998-05-01), Matalevich

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