Title:
【発明の名称】電子写真用帯電部材
Document Type and Number:
Japanese Patent JP2887831
Kind Code:
B2
Abstract:
A charging member for amorphous silicon photoreceptors which can be supplied with a uniform and stable resistivity, exhibits an excellent durability and is insusceptible to variation of resistivity against environmental conditions, pinhole leak and contamination on the photoreceptors, showing a good quality and a long life. An electrophotographic charging member for charging a photoreceptor (preferably, mainly composed of amorphous silicon), which comprises a porous anodized aluminum film formed by anodically oxidizing a support the surface of which is made of aluminum or aluminum alloy. In the charging member, it is preferred that the pores in the porous anodized aluminum film be filled with a metal or an electrically conductive material made of an oxyacid salt of transition metal or pure water be attached to the inner wall of the pores in the porous anodized aluminum film. The charging member of the present invention may comprise a surface protective layer on the porous anodized aluminum film. The surface protective layer preferably is made of an organic high molecular compound or inorganic high molecular compound having electrically conductive fine particles dispersed therein. Alternatively, the surface protective layer may comprise an abrasive dispersed therein.
Inventors:
ONO MASAHITO
Application Number:
JP34939793A
Publication Date:
May 10, 1999
Filing Date:
December 28, 1993
Export Citation:
Assignee:
FUJI ZEROTSUKUSU KK
International Classes:
F16C13/00; G03G15/02; (IPC1-7): G03G15/02
Domestic Patent References:
| JP63847A |
Attorney, Agent or Firm:
Tsuyoshi Watanabe