Developing device

Details Developing device Developing device

2006-08-22

2006-08-22

Ngo, Hoang (Department: 2852)

Electrophotography

Control of electrophotography process

Control of developing

C399S044000, C399S285000

Reexamination Certificate

active

07095969

ABSTRACT:
A developing device has a voltage application member which is in contact via a toner layer with a developing roller that rotates while holding the toner layer on its outer peripheral surface. A voltage that the voltage application member applies to the toner layer is switched between AC voltage and DC voltage based on humidity or drive cumulated time of the developing device.

REFERENCES:
patent: 5826146 (1998-10-01), Maruta et al.
patent: 5970280 (1999-10-01), Suzuki et al.
patent: 6223004 (2001-04-01), Kodama
patent: 63-155065 (1988-06-01), None
patent: 05-011583 (1993-01-01), None
patent: 10-031358 (1998-02-01), None
patent: 10-133474 (1998-05-01), None
patent: 11-272069 (1999-10-01), None

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