Charging apparatus with plural charging means

Details Charging apparatus with plural charging means Charging apparatus with plural charging means

2005-06-21

2005-06-21

Royer, William J. (Department: 2852)

Electrophotography

Control of electrophotography process

Control of charging

C399S175000, C399S176000

Reexamination Certificate

active

06909859

ABSTRACT:
A charging apparatus includes plural charging devices including a first charging device and a second charging device, in which an absolute value of a current flowing from the second charging device to a member to be charged is 25% or less of an absolute value of a sum of currents respectively flowing from the plural charging devices to the member to be charged, thereby achieving uniform charging of the member to be charged.

REFERENCES:
patent: 4456370 (1984-06-01), Hayes, Jr.
patent: 5751405 (1998-05-01), Aita et al.
patent: 5832336 (1998-11-01), Kawasaki et al.
patent: 5842081 (1998-11-01), Kaname et al.
patent: 5881343 (1999-03-01), Momotani et al.
patent: 6301459 (2001-10-01), Ishiyama et al.

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