Patent ID: 6942952
Filing Date: 2005-09-13
Classification: G03G

Abstract:
1. An electrophotographic photosensitive member comprising a photosensitive layer on a support; and wherein a surface layer of the electrophotographic photosensitive member contains diorganopolysiloxane having a repeating structure unit α represented by Formula (11) and a repeating structure unit β represented by Formula (12), and having a weight-average molecular weight of 1,000 to 1,000,000, and wherein the content of the diorganopolysiloxane in the surface layer is 0.01 to 20% by weight based on an entire weight of the surface layer, and wherein the surface layer does not contain fluorine atom-containing resin particles: in Formula (11) and (12), R 11 and R 12 are independently a substituted or unsubstituted monovalent hydrocarbon group, B 11 is a monovalent organic group having a perfluoroalkyl group, and D 11 is a monovalent group selected from the group consisting of: a monovalent organic group having a substituted or unsubstituted polystyrene chain with a polymerization degree of 3 or more; a monovalent organic group having a substituted or unsubstituted alkyleneoxy group; a monovalent organic group having a substituted or unsubstituted siloxane chain and; a monovalent organic group having carbon atoms of 12 or more.