| 摘要 |
PROBLEM TO BE SOLVED: To provide a highly sensitive positive electrification type electrophotographic photoreceptor for copying machine and printer by using a new organic material which has not been conventionally used as a charge transfer substance in a photosensitive layer. SOLUTION: In the electrophotographic photoreceptor having a photosensitive layer containing a charge generating substance and a charge transfer substance formed on a conductive base body, the photosensitive layer contains at least one kind of electron transfer compound expressed by general formula (I) as the charge transfer substance. In formula (I), each of R<1> and R<2> independently represents hydrogen atom, a halogen atom, a 1-6C alkyl group or an alkoxy group which may have substituents, nitro group, an aryl group which may have substituents or residue to form a ring, A represents an oxygen atom or =CR<3> R<4> , and Z represents a residue which may have one to three benzene rings or an arylene group which may have substituents.
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