Electrophotographic photosensitive member, method for producing electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus

An electrophotographic photosensitive member comprising:

• a support;
• an undercoat layer formed on the support;
• and
• a photosensitive layer formed on the undercoat layer, wherein the undercoat layer comprises a polymerized product of a composition comprising (i) to (iii):
• (i) at least one selected from the group consisting of a compound represented by formula (C1) below, an oligomer of the compound represented by formula (C1), a compound represented by formula (C2) below, an oligomer of the compound represented by formula (C2), a compound represented by formula (C3) below, an oligomer of the compound represented by formula (C3), a compound represented by formula (C4) below, an oligomer of the compound represented by formula (C4), a compound represented by formula (C5) below, and an oligomer of the compound represented by formula (C5)
• where R11 to R16, R22 to R25, R31 to R34, R41 to R44, and R51 to R54 each independently represent a hydrogen atom, a hydroxy group, an acyl group, or a monovalent group represented by —CH2—OR1,
• at least one of the R11 to R16, at least one of the R22 to R25, at least one of the R31 to R34, at least one of the R41 to R44, and at least one of the R51 to R54 are each the monovalent group represented by —CH2—OR1,
• R1 represents a hydrogen atom, or an alkyl group having 1 to 10 carbon atoms, and
• R21 represents an aryl group, an aryl group substituted with an alkyl group, a cycloalkyl group, or a cycloalkyl group substituted with an alkyl group;
• (ii) a resin having a repeating structural unit represented by formula (B) below
• where R61 represents a hydrogen atom or an alkyl group, Y1 represents a single bond, an alkylene group, or a phenylene group, and W1 represents a hydroxy group, a thiol group, an amino group, a carboxyl group, or a methoxy group;
• and
• (iii) an electron transporting substance having at least one substituent selected from the group consisting of a hydroxy group, a thiol group, an amino group, a carboxyl group, and a methoxy group.