发明公开
- 专利标题： Electrophotographic photosensitive member, process cartridge and electrophotographic apparatus
- 专利标题（中）： 元素，电子照相机和电子照相机
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申请号： EP99301605.4申请日： 1999-03-03
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公开(公告)号： EP0940725A1公开(公告)日： 1999-09-08
- 发明人: Tanaka, Masato , Takai, Hideyuki , Nakata, Kouichi
- 申请人： CANON KABUSHIKI KAISHA
- 申请人地址： 30-2, 3-chome, Shimomaruko, Ohta-ku Tokyo JP
- 专利权人： CANON KABUSHIKI KAISHA
- 当前专利权人： CANON KABUSHIKI KAISHA
- 当前专利权人地址： 30-2, 3-chome, Shimomaruko, Ohta-ku Tokyo JP
- 代理机构： Beresford, Keith Denis Lewis
- 优先权： JP6769098 19980304; JP6769198 19980304
- 主分类号： G03G5/06
- IPC分类号： G03G5/06
摘要：
An electrophotographic photosensitive member is formed of a support, and a photosensitive layer disposed on the support. The photosensitive layer is characterized by containing an azo pigment having an organic group represented by formula (1) below:
wherein A denotes a residue group of formula (1A) below:
and k 1 , k 2 , Z 1 , Z 2 , D; R 1 and R 2 are defined in the text. The group of the formula (1) may provide at least one of up to 4 azo-substituents of the azo pigment having an entire structure represented by
Ar(̵N=N-Cp) 1-4 ,
wherein Ar denotes an aromatic or heterocyclic core unit, Cp denotes a coupler residue group, and -(N=N-Cp) denotes such an azo-substituent. The photosensitive member can exhibit good electrophotographic performances including high and stable sensitivity on repetitive use.
wherein A denotes a residue group of formula (1A) below:
and k 1 , k 2 , Z 1 , Z 2 , D; R 1 and R 2 are defined in the text. The group of the formula (1) may provide at least one of up to 4 azo-substituents of the azo pigment having an entire structure represented by
Ar(̵N=N-Cp) 1-4 ,
wherein Ar denotes an aromatic or heterocyclic core unit, Cp denotes a coupler residue group, and -(N=N-Cp) denotes such an azo-substituent. The photosensitive member can exhibit good electrophotographic performances including high and stable sensitivity on repetitive use.
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