PURPOSE: To obtain a photoreceptor having high sensitivity, less liable to fatigue or deterioration in the case of repeated use and having stable electrophotographic characteristics by using a specified diamino compd. as the electric charge transferring material of a photoreceptor.
CONSTITUTION: A photosensitive layer contg. a diamino compd. represented by lm: formula is formed on an electric conductive substrate. In the formula, each of Ar1 and Ar2 is alkyl, aralkyl, aryl or a heterocyclic group, each of R1-R4 is H, alkyl, alkoxy or halogen, X is -O-, -SO,-(R5)C(R6)-, -N(R7)-,-N=N-, C2H4-OR-CH=CH-, each of R5-R7 is H, alkyl which may have a substituent or aryl which may have a substituent and Y is -CH2-, -C2H4-or-CH=CH-. The diamino compd. has high compatibility with a resin in the photo-sensitive layer and the objective photoreceptor less liable to optical fatigue due to repeated use and having high sensitivity is obtd.
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