Developing device for an image forming apparatus which reduces t

Details Developing device for an image forming apparatus which reduces t Developing device for an image forming apparatus which reduces t

1994-10-18

1997-04-01

Braun, Fred L.

Electrophotography

Image formation

Photoconductive member

399285, G03G 1508

Patent

active

056171900

ABSTRACT:
In an image forming apparatus, a developing device has an intermediate developing roller or belt between a developing roller and a photoconductive element. A high-tension power source applies a bias to the intermediate developing roller or belt. The bias before the start of printing is preselected to be zero volts, a voltage opposite in polarity to a charge potential deposited on the photoconductive element, or a voltage identical in polarity with the charge potential and smaller in an absolute value of potential than a potential deposited on the photoconductive element after exposure.

REFERENCES:
patent: 4847657 (1989-07-01), Hanada et al.
patent: 5170213 (1992-12-01), Yamaguchi et al.
patent: 5179411 (1993-01-01), Yoshiuchi et al.
patent: 5477006 (1995-12-01), Imamiya et al.

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