Patent ID: 8785089
Filing Date: 2014-07-22
Classification: G03G

Abstract:
1. An electrophotographic photosensitive member comprising: a conductive support; a charge generation layer provided on the conductive support; and a charge transport layer which is provided on the charge generation layer, and wherein the charge transport layer is a surface layer, wherein the charge transport layer contains: the charge transport material; a polycarbonate resin A having a repeating structural unit represented by the following formula (1) or (101), a repeating structural unit represented by the following formula (2), and a repeating structural unit represented by the following formula (3); and at least one of a polyester resin C having a repeating structural unit represented by the following structural unit (C) and a polycarbonate resin D having a repeating structural unit represented by the following formula (D); the content of a siloxane moiety in the polycarbonate resin A is 10 to 40 percent by mass to the total mass of the polycarbonate resin A, the content of the repeating structural unit represented by the following formula (2) in the polycarbonate resin A is 5 to 50 percent by mass to the total mass of the polycarbonate resin A, and the charge transport layer has a matrix-domain structure including a matrix formed from the charge transport material and at least one of the polyester resin C and the polycarbonate resin D and domains formed in the matrix from the polycarbonate resin A, where in the formula (1), Y W 1 and W 2 independently represent a monovalent group represented by the following formula (a) or (b): where in the formulas (a) and (b), Z where in the formula (101), R where in the formulas (e) and (f), Z where in the formula (2), R where in the formula (3), R where in the formula (C), R where in the formula (D), R