Image forming apparatus having means to control condition of...

Details Image forming apparatus having means to control condition of... Image forming apparatus having means to control condition of...

2007-08-07

2007-08-07

Gray, David M. (Department: 2852)

Electrophotography

Control of electrophotography process

Control of charging

C399S171000

Reexamination Certificate

active

11016873

ABSTRACT:
An image forming apparatus is provided with an image bearing member, a charging member with a discharge wire and a grid, and a first current supply controlling member, which controls a current supply to the discharge wire. Also provided are a second current supply controlling member, which controls a current supply to the grid, a potential setting member, which sets a potential value on the image bearing member to be charged by the charging member, and a first current supply condition selecting member, which selects a current control condition of the first current supply controlling member or the second current supply controlling member according to the set potential. In addition, a second current supply condition selecting member selects a current control condition for the other current supply controlling member based on the determined current control condition.

REFERENCES:
patent: 5469243 (1995-11-01), Saitoh et al.
patent: 5481337 (1996-01-01), Tsuchiya et al.
patent: 5610689 (1997-03-01), Kamiya et al.
patent: 6418280 (2002-07-01), Kamiya
patent: 6493524 (2002-12-01), Kamiya
patent: 2001/0046060 (2001-11-01), Kamiya
patent: 6-274012 (1994-09-01), None
patent: 11184215 (1999-07-01), None

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