An organic photoconductive material and photosensitive material for electronic photography using it
申请人:DAINICHISEIKA COLOR
& CHEMICALS MFG. CO. LTD.
公开号:EP0628881A2
公开(公告)日:1994-12-14
An organic photoconductive material is represented by the following general formula [1 ]:
wherein B is a divalent organic group bonded to nitrogen atoms forming azo groups, A1 and A2 are groups different from each other, A1 is represented by the following general formula [A1 ]:
wherein X is an atomic group which is necessary for forming an aromatic hydrocarbon ring or an aromatic hetero-ring by condensation with the benzene ring, Y is a hydrogen atom, an alkyl group, an alkoxy group or a halogen atom, m is an integer of 1 to 4, R is an aromatic hydrocarbon ring group or an aromatic hetero-ring group and n is 1 or 2, and A2 is a group represented by one of the following general formulae [A2] and [A3]:
wherein a1 is a group selected from R, -N = CH-R and
R, X, Y, m and n are the same as those in the general formula [A1 ] and p is 0 or 1. A photosensitive material for electronic photography having excellent properties, such as charging property, retention of charge, sensitivity, residual voltage and image formation, and showing no change of the properties after repeated use for a long time can be obtained by using an azo compound having a specific structure as the carrier generating substance. A photosensitive material for electric photography of a laminate type or a dispersion type having high performance and high durability can also be provided.
一种有机光电导材料由以下通式[1 ]表示:
其中 B 是与氮原子结合形成偶氮基团的二价有机基团,A1 和 A2 是互不相同的基团,A1 由下式通式[A1 ]表示:
其中 X 是通过与苯环缩合形成芳香烃环或芳香杂环所必需的原子团,Y 是氢原子、烷基、烷氧基或卤素原子,m 是 1 至 4 的整数,R 是芳香烃环基或芳香杂环基,n 是 1 或 2,A2 是由以下通式[A2]和[A3]之一表示的基团:
其中 a1 是选自 R、-N = CH-R 和
R、X、Y、m 和 n 与通式[A1 ]中的基团相同,p 为 0 或 1。使用具有特定结构的偶氮化合物作为载体生成物质,可以获得一种电子摄影用感光材料,该材料具有优异的性能,如充电性能、电荷保持率、灵敏度、残余电压和图像形成,并且在长时间重复使用后性能不会发生变化。此外,还可以提供具有高性能和高耐久性的层压型或分散型电动摄影用感光材料。