Charging member and charging apparatus

Details Charging member and charging apparatus Charging member and charging apparatus

1999-08-31

2000-10-17

Lee, Susan S.Y.

Electrophotography

Image formation

Charging

361225, G03G 1502

Patent

active

061344087

ABSTRACT:
The invention is to suppress a fluctuation in resistance of a charging member due to the environment and the applied voltage, and to suppress the charging potential of a photosensitive article to realize uniformity in charging by preventing generation of leakage at a part of a low resistance on the surface of the photosensitive article. The charging member may have a conductive core material, a conductive elastic layer formed on a surface of the conductive core material, and a resistance adjusting layer for adjusting a resistance between the conductive core material and the surface of the article to be charged, formed on a surface of the conductive core material, have a material for forming the resistance adjusting layer and a conductive filler for adjusting resistance that exhibits conductivity by electronic conduction, and having a volume resistivity of 5.times.10.sup.5 .OMEGA..multidot.cm or more at an electric field of 5.times.10.sup.4 V/cm.

REFERENCES:
patent: 5390007 (1995-02-01), Kugoh et al.
patent: 5766753 (1998-06-01), Murata et al.
patent: 6067430 (2000-05-01), Mammino et al.

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