申请人:MITSUBISHI KASEI CORPORATION
公开号:EP0219862A2
公开(公告)日:1987-04-29
A photosensitive member for electrophotography comprising at least a photoconductive layer on a conductive substrate, the photoconductive layer containing polyvinyl acetal having a constituent unit represented by the following general formula [I]:
wherein Ar represents an aryl group, R, a hydrogen atom, a lower alkyl group or an aryl group, and m an integer of 0 or 1-3, and a constituent unit represented by the following general formula [II]:
wherein R2 represents a hydrogen atom or an acyl group, the constituent unit of the general formula [I] being 40 mole % or more, and the total of the constituent units of the general formulae [I] and [II] being 60 mole % or more. This photosensitive layer has high sensitivity and durability and low residual potential.
一种用于电子照相的感光构件,至少包括导电基底上的感光层,该感光层含有聚乙烯醇缩醛,其组成单元由以下通式[I]表示:
其中 Ar 代表芳基,R 代表氢原子、低级烷基或芳基,m 为 0 或 1-3 的整数,以及由以下通式[II]代表的组成单元:
其中 R2 代表氢原子或酰基,通式[I]的组成单元为 40 摩尔%或更多,通式[I]和[II]的组成单元的总和为 60 摩尔%或更多。这种光敏层具有高灵敏度和耐久性,残留电位低。