Electrophotographic apparatus using photoconductive member charg

Details Electrophotographic apparatus using photoconductive member charg Electrophotographic apparatus using photoconductive member charg

1995-06-19

1999-03-30

Beatty, Robert

Electrophotography

Image formation

Charging

G03G 1502

Patent

active

058900373

ABSTRACT:
An electrophotographic apparatus is constituted by an electrophotographic photosensitive member, and a charger, imagewise exposing light and a developer disposed in this order opposite to the photosensitive member. The photosensitive member has a surface layer which is a charge-injection layer. The charger includes a charging member formed of magnetic particles and disposed contactable to the photosensitive member so as to charge the photosensitive member to at least 80% of a DC voltage supplied to the charging member. The magnetic particles have a volume resistivity in the range of 1.times.10.sup.4 -1.times.10.sup.9 ohm.cm, and the magnetic particles have a surface layer having a volume resistivity of at most 1.times.10.sup.9 ohm.cm.

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(JP#63-187267; abstract).
Tetsutani, et al, "New Photoreceptor charging method . . . " J. Appl. Phys. 62 (7) Oct. 1987 pp. 2665-2668.

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