申请人:DAINICHI SEIKA COLOR & CHEMICALS MFG. CO. LTD.
公开号:EP0322823A2
公开(公告)日:1989-07-05
An electrophotographic photoreceptor is provided with a photosensitive layer, which contains an azo compound having in the molecule thereof at least one azo group coupled with a couple residuum represented by the following general formula (I):
wherein X means an atomic group necessary for condensing with a benzene ring to form a substituted or unsubstituted aromatic hydrocarbon ring, or substituted or unsubstituted aromatic heterocyclic ring, Y denotes a radical selected from the group consisting of hydrogen, halogen atoms, cyano radicals, and substituted or unsubstituted alkyl, or alkoxy group, and n stands for an integer of 0∼4, R₁ and R₂ designate, respectively, hydrogen, substituted or unsubstituted alkyl, substituted or unsubstituted alalkyl, substituted or unsubstituted aromatic hydrocarbon ring or substituted or unsubstituted aromatic heterocyclic ring, and said R₁ and R₂ may be mutually same or different, or may form a ring together with nitrogen atom.
电致发光感光层含有一种偶氮化合物,在其分子中至少有一个偶氮基团与下式(I)所代表的对偶残基偶联:
其中 X 表示与苯环缩合以形成取代或未取代的芳香烃环或取代或未取代的芳香杂环所必需的原子团,Y 表示选自氢、卤素原子、氰基、取代或未取代的烷基或烷氧基组成的基团、R₁ 和 R₂ 分别表示氢、取代或未取代的烷基、取代或未取代的烷基、取代或未取代的芳香烃环或取代或未取代的芳香杂环,所述 R₁ 和 R₂ 可以相互相同或不同,也可以与氮原子一起形成环。