Electrophotographic photoreceptor

An electrophotographic photoreceptor comprising an electroconductive substrate and a photosensitive layer provided thereon,

• wherein the photosensitive layer comprises a binder resin comprising a polycarbonate resin consisting of a constituent unit represented by the following formula (A) and a constituent unit represented by the following formula (B),
• wherein the content of the constituent unit represented by formula (A) is 7 to 20% by weight based upon the total constituent units and the intrinsic viscosity thereof is 0.3 to 2 dl/g,
• wherein, in formula (B),
• R1 to R4, each independently, represent a group selected from the group consisting of a hydrogen atom, a halogen group, a C1-9 alkyl group, a C6-12 aryl group, a C2-5 alkenyl group, a C1-5 alkoxy group and a C7-17 aralkyl group,
• wherein the C1-9 alkyl group, the C6-12 aryl group, the C2-5 alkenyl group, the C1-5 alkoxy group and the C7-17 aralkyl group can be bonded to a substituent selected from the group consisting of a C1-5 alkyl group, a C2-5 alkenyl group, a C1-5 alkoxy group and a halogen group;
• and
• X represents a divalent group selected from the group consisting of one of the following structures
• wherein:
• R5 represents a group selected from the group consisting of a halogen group, an a C1-9 alkyl group, a C1-5 alkoxy group and a C6-12 aryl group, wherein the C1-9 alkyl group, the C1-5 alkoxy group and the C6-12 aryl group can be bonded to a substituent selected from the group consisting of a C1-5 alkyl group, a C2-5 alkenyl group, a C1-5 alkoxy group and a halogen group,
• R6 represents a group selected from the group consisting of a hydrogen atom, a halogen group, a C1-9 alkyl group, a C1-5 alkoxy group and a C6-12 aryl group, wherein the C1-9 alkyl group, the C1-5 alkoxy group and the C6-12 aryl group can be bonded to a substituent selected from the group consisting of a C1-5 alkyl group, a C2-5 alkenyl group, a C1-5 alkoxy group and a halogen group, or
• R5 and R6 represent a group forming a carbon ring or a heterocycle, which can be substituted with a substituent selected from the group consisting of a C1-5 alkyl group, a C2-5 alkenyl group, a C1-5 alkoxy group and a halogen group, wherein R5 and R6 are bonded with each other;
• “a” represents an integer of 0-20 other than 1;
• and
• each of R7 and R8 independently represents a group selected from the group consisting of a hydrogen atom, a halogen group, a C1-9 alkyl group, a C1-9 alkoxy group and a C6-12 aryl group, wherein the C1-9 alkyl group, the C1-9 alkoxy group and the C6-12 aryl group can be bonded to a substituent selected from the group consisting of a C1-5 alkyl group, a C2-5 alkenyl group, a C1-5 alkoxy group and a halogen group, or
• R7 and R8 represent a group forming a carbon ring or a heterocycle, which can be substituted with a substituent selected from the group consisting of a C1-5 alkyl group, a C2-5 alkenyl group, a C1-5 alkoxy group and a halogen group, wherein R7 and R9 are bonded with each other.