Patent ID: 8465889
Filing Date: 2013-06-18
Classification: G03G

Abstract:
1. An electrophotographic photosensitive member comprising a support and a photosensitive layer formed on the support, wherein the photosensitive layer contains a copolymer having a repeating structural unit represented by the following formula (1) and a repeating structural unit represented by the following formula (2), or a copolymer having a repeating structural unit represented by the following formula (1) and a repeating structural unit represented by the following formula (3): where, in the formulas (1), (2) and (3); Z E —W wherein X 1 represents a tetravalent group formed by removing four hydrogen atoms from a cyclic hydrocarbon; E —W wherein X 4 represents a tetravalent group formed by removing four hydrogen atoms from a cyclic hydrocarbon; W A represents a divalent group represented by any of the following formulas (A-1) to (A-8): where, in the formulas (A-1) to (A-8); R R R R R R R R B B