Patent ID: 7563553
Filing Date: 2009-07-21
Classification: G03G

Abstract:
1. A process for producing an electrophotographic photosensitive member, comprising a photosensitive layer-forming step of forming a photosensitive layer on an electroconductive support; said photosensitive layer-forming step including a step of forming a coating layer comprising a hole-transporting compound having at least two chain-polymerization function groups on the electroconductive support, and a step of polymerizing the hole-transporting compound in the coating layer by irradiation of the coating layer with electron-beam radiation at an acceleration voltage of at most 300 kV and a dosage of 1-100 Mrad to provide a three-dimensional cross-linked polymerizate, wherein the hole-transporting compound is represented by formula (1) below: wherein A denotes a hole-transporting group, b≧2, Z is an alkylene group capable of having a substituent or a combination of an alkylene group capable of having a substituent and an oxygen atom, P 2 is represented by a formula selected from the group consisting of formulae (11) and (12) below: and the hole-transporting group A is such that a combination of A with a number (b) of hydrogen atoms instead of Z P 2 )) b as in the formula (1) would provide a hole-transporting compound that is a compound represented by formula (2) or (3) below: wherein R 1 , R 2 , R 3 and R 4 independently denote an alkyl group, aralkyl group or aryl group each capable of having a substituent; Ar 1 and Ar 2 independently denote an arylene group capable of having a substituent; and m is 0 or 1; wherein R 5 , R 6 , R 9 and R 10 independently denote an alkyl group, aralkyl group or aryl group each capable of having a substituent; at least two of R 5 , R 6 , R 9 and R 10 are aryl groups each capable of having a substituent; R 7 and R 8 independently denote an alkylene group or arylene group each capable of having a substituent and Q is an organic group obtained by selecting one member or combining at least two members arbitrarily selected from the group consisting of an alkylene group capable of having a substituent, an arylene group capable of having a substituent, —CR 26 ═CR 27 — (wherein R 26 and R 27 independently denote an alkyl group, an aryl group or a hydrogen atom), —CO—, —SO—, —SO 2 —, an oxygen atom and a sulfur atom.