Patent ID: 7083886
Filing Date: 2006-08-01
Classification: G03G

Abstract:
1. A single layered electrophotographic photoreceptor comprising a photosensitive layer having at least a charge generating material, a charge transport material and a binder on a conductive support, wherein the charge generating material is amorphous titanylphthalocyanine, and the photosensitive layer includes a hindered phenol compound having at least three structural units represented by Formula 1 in a single molecule: wherein R1, R2, R3 and R4 are independently selected from the group consisting of a hydrogen atom, an unsubstituted C 1 –C 20 alkyl group, a substituted or unsubstituted C 6 –C 20 aryl group, a halogen atom, and a substituted or unsubstituted amino group, wherein the photosensitive layer includes a hindered amine compound, and wherein the hindered amine compound is a compound having at least two structural units represented by Formula 2 in a single molecule: wherein R 5 and R 6 are independently selected from the group consisting of a hydrogen atom, a substituted or unsubstituted C 6 –C 20 aryl group, a halogen atom, a substituted or unsubstituted amino group.