| 摘要 |
PROBLEM TO BE SOLVED: 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. SOLUTION: 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 R<SP>1</SP>, R<SP>2</SP>and R<SP>3</SP>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; R<SP>4</SP>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 R<SP>2</SP>and R<SP>3</SP>of the case (n) is 2 or 3 may be different from each other. COPYRIGHT: (C)2005,JPO&NCIPI
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