Patent ID: 8524431

Claim:
An electrophotographic photosensitive member comprising: a conductive support; and an intermediate layer, a charge generation layer and a charge transport layer which are provided on the conductive support in this order, wherein: the intermediate layer contains an ethylene-acrylic acid binary copolymer and a polyolefin resin; the polyolefin resin contains (A1), (A2) and (A3) as described below, and the mass ratio of the (A1), (A2) and (A3) satisfies a formula as described below: 0.01≦[( A 2)/{( A 1)+( A 2)+( A 3)}]×100≦50 1.25≦{( A 1)/( A 3)}≦98, (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 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.