ELECTROPHOTOGRAPHIC PHOTORECEPTOR AND ITS PRODUCTION
PROBLEM TO BE SOLVED: To obtain a photoreceptor having enough sensitivity which does not cause problems relating to the stability of electrostatic characteristics even when it is repeatedly used, by incorporating a X-type nonmetal phthalocyanine and a specified disazo compd. as charge generating mat...
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Zusammenfassung: | PROBLEM TO BE SOLVED: To obtain a photoreceptor having enough sensitivity which does not cause problems relating to the stability of electrostatic characteristics even when it is repeatedly used, by incorporating a X-type nonmetal phthalocyanine and a specified disazo compd. as charge generating materials. SOLUTION: This photoreceptor contains a X-type nonmetal phthalocyanine and a disazo compd. expressed by formula I as charge generating materials. In formula I, each A and B is one of coupler residues expressed by formulae II to IV or the like. In formulae II to IV, X1 is hydrogen atom or the like, Z is a residue to be condensed with a benzene ring to form an aromatic ring or aromatic heterocycle, X2 is an alkyl group, aryl group or heterocyclic group which may have substituents, X3 is hydrogen atom, cyano group, carbamoyl group, carboxyl group or the like, X4 is hydrogen atom or an alkyl group, cycloalkyl group, alkenyl group or the like which may have substituents, or heterocyclic group, and Y is a residue to form an aromatic heterocycle. |
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