Abstract: An electrophotographic photoconductor an electroconductive substrate, an intermediate layer comprising a charge generating azo pigment and a thermosetting resin, a charge generating layer and a charge transporting layer, which layers are successively overlaid on the electroconductive substrate, the charge generating azo pigment being any of the azo pigments (1) through (4): ##STR1##

Abstract: An electrophotographic photoconductor comprising an electroconductive support, an intermediate layer formed thereon, an a photoconductive layer formed on said intermediate layer, which intermediate layer comprises at least one component selected from the group consisting of: (a) monohydric aliphatic alcohol, (b) dihydric aliphatic alcohol, (c) polyethylene glycol, (d) polypropylene glycol, (e) polybutylene glycol, (f) polyethylene glycol monoester and/or polyethylene glycol diester, (g) polyethylene monoether, (h) crown ether, (i) a random or block copolymer having as structure units a hydroxyethylene group and a hydroxypropylene group, and hydroxyl groups at the terminal thereof, and (j) a polymer of a monomer having formula (I) and a copolymer of said monomer and a counterpart monomer: ##STR1## wherein R.sup.1 represents hydrogen or a methyl group; R.sup.2 represents hydrogen, a lower alkyl group or an unsubstituted or substituted aryl group; and n is an integer of 2 to 100.

Abstract: A layered electrophotographic photoconductor whose charge generation layer comprises a bisazo pigment selected from the group consisting of the bisazo pigments represented by the following general formula (I) and whose charge transport layer contains a charge transport material selected from the group consisting of the hydrazone compounds represented by the following general formula (2): ##STR1## wherein A represents --C.sub.6 H.sub.4 --Cl(o), --C.sub.6 H.sub.4 --Cl(m), --C.sub.6 H.sub.4 --Br(o), --C.sub.6 H.sub.4 --Br(m), --C.sub.6 H.sub.4 --F(o), --C.sub.6 H.sub.4 --F(m), --C.sub.6 H.sub.4 --F(p), or --C.sub.6 H.sub.4 --I(m), ##STR2## wherein R.sup.

Abstract: A layered electrophotographic photoconductor whose charge generation layer comprises a bisazo pigment selected from the group consisting of the bisazo pigments represented by formula (1) and whose charge transport layer contains a charge transport material selected from the group consisting of anthrancene compounds represented by formula (2) or from the group consisting of distyrylbenzene compounds represented by formula (3) ##STR1##

Abstract: A layered electrophotographic photoconductor comprising an electroconductive support material and a photoconductive double layer consisting of a charge generation layer comprising a disazo pigment and a charge transport layer comprising a charge transport material which is capable of forming a charge transport complex by reaction with 2,4,7-trinitro-9-fluorenone, the charge transport complex being characterized by the light energy value corresponding to the wavelength of its maximum visible spectral absorption being in the range of 1.6 to 2.1 eV.