Electrophotographic photoreceptor, process cartridge, and image forming apparatus

Abstract

An electrophotographic photoreceptor includes a conductive substrate; an undercoat layer on the conductive substrate, the undercoat layer containing at least one perinone compound selected from the group consisting of a compound represented by general formula (1) and a compound represented by general formula (2) below, metal oxide particles of at least one type selected from the group consisting of aluminum oxide particles, iron oxide particles, copper oxide particles, magnesium oxide particles, calcium oxide particles, and silicon dioxide particles, and a binder resin, the undercoat layer having a thickness of 1 μm or more and 10 μm or less; and a photosensitive layer on the undercoat layer. In general formula (1), R, R, R, R, R, R, R, and Reach independently represent a hydrogen atom, an alkyl group, an alkoxy group, an aralkyl group, an aryl group, an aryloxy group, an alkoxycarbonyl group, an aryloxycarbonyl group, an alkoxycarbonylalkyl group, an aryloxycarbonylalkyl group, or a halogen atom; Rand Rmay be bonded to each other to form a ring, so may Rand R, and so may Rand R; and Rand Rmay be bonded to each other to form a ring, so may Rand R, and so may Rand R. In general formula (2), R, R, R, R, R, R, R, and Reach independently represent a hydrogen atom, an alkyl group, an alkoxy group, an aralkyl group, an aryl group, an aryloxy group, an alkoxycarbonyl group, an aryloxycarbonyl group, an alkoxycarbonylalkyl group, an aryloxycarbonylalkyl group, or a halogen atom; Rand Rmay be bonded to each other to form a ring, so may Rand R, and so may Rand R; and Rand Rmay be bonded to each other to form a ring, so may Rand R, and so may Rand R.