Electrophotographic photosensitive member, process cartridge and electrophotographic apparatus

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≦[(A2)/{(A1)+(A2)+(A3)}]×100≦50
• 1.25≦{(A1)/(A3)}≦98,
• (A1):
• a repeating structural unit represented by the following formula (11):
• where R11 to R14 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 R21 to R24 each independently represent a hydrogen atom, an alkyl group, a phenyl group, or a monovalent group represented by —Y21COOH where Y21 represents a single bond, an alkylene group or an arylene group;
• R25 and R26 each independently represent a hydrogen atom, an alkyl group or a phenyl group;
• and X21 represents a divalent group represented by —Y22COOCOY23— where Y22 and Y23 each independently represent a single bond, an alkylene group or an arylene group, provided that at least one of R21 to R24 represents a monovalent group represented by —Y21COOH;
• and
• (A3):
• a repeating structural unit represented by one of the following formulae (31), (32), (33) and (34):
• where R31 to R35 each independently represent a hydrogen atom or a methyl group;
• R41 to R43 each independently represent an alkyl group having 1 to 10 carbon atoms, and R51 to R53 each independently represent a hydrogen atom or an alkyl group having 1 to 10 carbon atoms.