Charging device and image forming apparatus

Details Charging device and image forming apparatus Charging device and image forming apparatus

1998-08-26

2000-03-07

Smith, Matthew S.

Electrophotography

Image formation

Charging

399176, G03G 1502

Patent

active

060351624

ABSTRACT:
A charging apparatus for charging a member to be charged which has a surface layer having a volume resistivity of 1.times.10.sup.9 -1.times.10.sup.14 .OMEGA.cm; a charging member contactable to the member to be charged to electrically charge the member to be charged, the charging member being supplied with a voltage having an AC voltage component; wherein e time constant .tau. (sec) of the member to be charged and the charging member, a frequency f (Hz) of the AC voltage component, and an effective voltage V.sub.AC (V) of the AC voltage component, satisfy :

REFERENCES:
patent: 5774769 (1998-06-01), Chigono et al.
patent: 5835821 (1998-11-01), Suzuki et al.

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