Patent ID: 9651879
Date: 2017-05-16
CPC Classifications: G03G

Claim:
1. An electrophotographic photosensitive member, comprising: a support; a charge-generating layer on the support; and a charge-transporting layer on the charge-generating layer, the charge-transporting layer being a surface layer of the electrophotographic photosensitive member and comprising a matrix-domain structure comprising a domain and a matrix, wherein the domain includes a resin A having a siloxane structure represented by the following formula (A-E) at an end thereof: in the formula (A-E), an average of n a structural unit represented by one of the following formulae (A-1) and (A-2); and a structural unit represented by the following formula (B), the matrix includes a charge-transporting substance and a polycarbonate resin D, polycarbonate resin D comprising a structural unit represented by the following formula (D) and a structural unit represented by the following formula (E), a content of the structural unit represented by one of the formulae (A-1) and (A-2) in the resin A is from 5% by mass to 25% by mass based on a total mass of the resin A, a content of the structural unit represented by the formula (B) in the resin A is from 25% by mass to 95% by mass based on the total mass of the resin A, a content of the structural unit represented by the formula (D) in the polycarbonate resin D is from 10% by mass to 60% by mass based on a total mass of the polycarbonate resin D, and a content of the structural unit represented by the formula (E) in the polycarbonate resin D is from 40% by mass to 90% by mass based on the total mass of the polycarbonate resin D; in the formula (A-1): m when m Z R n in the formula (A-2): m when m Z R n in the formula (B): m when m in the formula (D): Y R in the formula (E): Y R resin A does not comprise the structural unit represented by formula (D).