Patent ID: 8343699

Claim:
An electrophotographic photosensitive member, comprising: a conductive support; an intermediate layer provided on the conductive support; and a photosensitive layer provided on the intermediate layer, wherein the intermediate layer contains a polyolefin resin having the following repeating structural units (A1), (A2), and (A3), and mass ratios (%) of the units (A1), (A2), and (A3) in the polyolefin resin satisfy the following formulae (II) and (III): 55/45≦( A 1)/( A 3)≦99/1; and Formula (II) 0.01≦( A 2)/{( A 1)+( A 2)+( A 3)}×100≦5; Formula (III) (A1): a repeating structural unit represented by the following formula (11) where R 11 to R 14 each independently represent a hydrogen atom or an alkyl group; (A2): a repeating structural unit represented by one of the following formulae (21) and (22) where R 21 to R 24 each independently represent a hydrogen atom, an alkyl group, a phenyl group, or a monovalent group represented by —Y 21 COOH where Y 21 represents a single bond, an alkylene group, or an arylene group, R 25 and R 26 each independently represent a hydrogen atom, an alkyl group, or a phenyl group, and X 21 represents a divalent group represented by —Y 22 COOCOY 23 — where Y 22 and Y 23 each independently represent a single bond, an alkylene group, or an arylene group, provided that at least one of R 21 to R 24 represents a monovalent group represented by —Y 21 COOH; and (A3): a repeating structural unit represented by any one of the following formulae (31), (32), (33), and (34) where R 31 to R 35 each independently represent a hydrogen atom or a methyl group, R 41 to R 43 each independently represent an alkyl group having 1 to 10 carbon atoms, and R 51 to R 53 each independently represent a hydrogen atom or an alkyl group having 1 to 10 carbon atoms.