Electrophotographic photosensitive member, process cartridge and electrophotographic apparatus
申请人:CANON KABUSHIKI KAISHA
公开号:EP0940726A1
公开(公告)日:1999-09-08
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 X1, Z1, k1, B, A, R1 and R2 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.
一种电致发光感光构件由支架和设置在支架上的感光层组成。光敏层的特点是含有一种偶氮颜料,其有机基团由下式(1)表示:
其中 X1、Z1、k1、B、A、R1 和 R2 在文中定义。式(1)中的基团可提供偶氮颜料的多达 4 个偶氮取代基中的至少一个,其整个结构由以下式子表示: 式(1)中的基团可提供偶氮颜料的多达 4 个偶氮取代基中的至少一个,其整个结构由以下式子表示
Ar(̵N=N-Cp)1-4、
其中 Ar 表示芳香族或杂环核心单元,Cp 表示耦合剂残基,-(N=N-Cp) 表示这样的偶氮取代基。该光敏元件可表现出良好的电致发光性能,包括重复使用时的高而稳定的灵敏度。