Charging apparatus and electrophotographic apparatus

Details Charging apparatus and electrophotographic apparatus Charging apparatus and electrophotographic apparatus

1997-02-14

1999-08-17

Brase, Sandra

Electrophotography

Image formation

Charging

G03G 1502

Patent

active

059406623

ABSTRACT:
A charging apparatus which comprises an electrophotographic photosensitive member and a charging member which comprises magnetic particles and placed in contact with the electrophotographic photosensitive member to charge the electrophotographic photosensitive member upon application of a voltage, wherein each magnetic particle has a surface layer containing a polyolefin resin of which weight average molecular weight is 10,000 or more, and has a volume resistivity of 1.times.10.sup.4 to 1.times.10.sup.11 .OMEGA.cm.

REFERENCES:
patent: 5252398 (1993-10-01), Ohtani et al.
patent: 5351109 (1994-09-01), Haneda
patent: 5367365 (1994-11-01), Haneda et al.
patent: 5406353 (1995-04-01), Asanae
patent: 5592264 (1997-01-01), Shigeta et al.
patent: 5606401 (1997-02-01), Yano
patent: 5659852 (1997-08-01), Chigono et al.

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