| abstract |
(57) [Abstract] (Correction) [Problem] To provide an electrophotographic photoreceptor having excellent electrical properties, high surface hardness and good surface lubricity, and less abrasion of a photosensitive layer using a contact charging method. Providing image forming devices. A charge-transporting polyester comprising a repeating structural unit having a structure represented by formula (I-1) or (I-2) and a polycarbonate-polysiloxane block copolymer are contained on a conductive substrate. An electrophotographic photoreceptor provided with a photosensitive layer for This photoreceptor is used in a contact charging type image forming apparatus. (In the formula, R 1 and R 2 represent a hydrogen atom, an alkyl group, an alkoxy group, a substituted amino group, a halogen atom, or a substituted or unsubstituted aryl group, and X is a substituted or unsubstituted divalent aromatic group. Represents a group, T represents a divalent linear hydrocarbon group having 1 to 6 carbon atoms or a divalent branched hydrocarbon group having 2 to 10 carbon atoms, and k = 0 or 1.) |