| 摘要 |
PROBLEM TO BE SOLVED: To provide the electrophotographic photoreceptor high in sensitivity and capable of keeping potential stable in repeated uses by incorporating a specified diamine compound and a specified styryl compound in a photosensitive layer. SOLUTION: The electrophotographic photoreceptor provided on a conductive substrate with the photosensitive layer containing the diamine compound represented by formula I and the styryl compound represented by formula II, and in formulae I and II, each of R1-R4 is an H atom or an alkyl, alkoxy, hydroxy, nitro, or aryl group or the like; each of R5 and R6 is an optionally substituted alkyl or aralkyl or aryl group; (n) is independently 1 or 2; each of R7-R11 is an H atom or an alkyl, arkoxy, substituted amino, hydroxy, nitro, or aryl or the like; X is a direct bond, or a -CH2-, -CH2CH2-, -CH=CH-, -O-, or -Sand (m) is, independently, 1 or 2.
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