Patent ID: 8652716

Claim:
An electrophotographic photoreceptor comprising a conductive substrate and a photosensitive layer, wherein a layer constituting an outermost surface of the photosensitive layer is a polymerized form of a composition comprising a cross-linkable charge transporting material having a reactive hydroxyl group and a cross-linkable charge transporting material having a reactive alkoxy group, the cross-linkable charge transporting material having a reactive hydroxyl group is a compound represented by the following formula (I-1), and the cross-linkable charge transporting material having a reactive alkoxy group is a compound represented by the following formula (I-2): F 1 -(L 1 -OH) n (I-1) F 2 -(L 2 -OR) m (I-2) where in the formula (I-1) and formula (I-2): F 1 and F 2 each independently represent an organic group derived from a compound having hole transportability; L 1 and L 2 each independently represent a single bond, or a linear or branched alkylene group having 1 to 5 carbon atoms; R represents an alkyl group; and n and m each independently represent an integer from 1 to 4; and an ionization potential of an outer surface of the layer constituting the outermost surface of the photosensitive layer is higher by about 0.1 eV or more than the ionization potential of an inner surface of the layer constituting the outermost surface of the photosensitive layer.