Patent ID: 7175955

Claim:
An electrophotographic photoreceptor comprising a conductive substrate, and at least one layer, which contains a polymeric compound having a repeating unit selected from repeating units represented by the following general formulas (I), (II) or (II), provided on the conductive substrate, wherein in general formulas (I), (II) or (III), R 1a and R 1b each independently represent an alkylene group having 1 to 6 carbon atoms, X represents a substituted or unsubstituted arylene group, or a substituted or unsubstituted alkylene group, Y is selected from the group of structures consisting of (IV), (V), (VI), (VII), (VIII), (IX), (X) and (XI), Q is selected from the group of structures consisting of (VIII), (X) and (XI), Z is selected from the group consisting of (VIII), (IX), (X) and (XI), and n represents a repeating unit number, wherein in general formulas (IV) to (IX), R 1 to R 14 each independently represent an alkyl group having 1 to 10 carbon atoms, an aryl group having 6 to 14 carbon atoms, or a substituent containing silicon; a, e, k and o each independently represent an integer from 0 to 4; b, c, f, h and i each independently represent an integer from 0 to 3; d, g, 1 and m each independently represent an integer from 0 to 2; and j represents 0 or 1, in general formulas (X) and (XI), R a to R c each independently represent a substituted or unsubstituted alkylene group having 1 to 10 carbon atoms, or a divalent substituent containing silicon, and one or more of R a , R b or R c may be present in a plurality in the respective formulas.