To provide a highly sensitive, positive electrification type electrophotographic photoreceptor for a copying machine and printer by using a new compound not used thus far as an electron transferable charge transfer substance in a photosensitive layer.
The electrophotographic photoreceptor is provided with the photosensitive layer containing a charge generating substance and the charge transfer substance formed on a conductive base body, in which the photosensitive layer contains at least one kind of the compound expressed by general formula (I). In the formula, each of R1, R2 and R3 may be the same or different and independently represents a hydrogen atom, halogen atom, 1-8C alkyl group which may have a substituent or aryl group which may have a substituent; R4 represents a hydrogen atom or 1-8C alkyl group; X represents a sulfur atom or oxygen atom; (n) represents an integer from 1 to 3; respective R2 and R3 of the case (n) is 2 or 3 may be different from each other.
SEKINE NOBUYUKI
KOTANI NORIKO
OKURA KENICHI
TAKESHIMA MOTOHIRO
Keiko Honda