Electrophotographic photoreceptor, process cartridge and image-forming apparatus including electrophotographic photoreceptor

An electrophotographic photoreceptor comprising, on a conductive base, at least a photoreceptive layer or, alternatively, at least the photoreceptive layer and a protective layer laminated on the photoreceptive layer, wherein

• at least one of the photoreceptive layer and the protective layer contains a perimidine compound represented by a general formula (I):
• wherein:
• X represents a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, or an alkoxy group having 1 to 6 carbon atoms,
• m represents an integer of 1 to 6, a total number of m being 6, a number of the alkyl or alkoxy groups that are potentially present is from 1 to 6, and the rest are the hydrogen atoms,
• in a case that the photoreceptive layer contains the perimidine compound,
• the photoreceptive layer is a laminated photoreceptive layer in which a charge generating layer containing a charge generating substance and a charge transporting layer containing a charge transporting substance are sequentially laminated from a side of the conductive base, and
• the charge transporting layer contains the perimidine compound having a content from 0.18 to 0.70% by mass based on a total solid content of the charge transporting layer, and
• in a case that the protective layer contains the perimidine compound, a content of the perimidine compound is 0.3 to 7% by mass based on a total solid content of the protective layer.