| 摘要 |
PROBLEM TO BE SOLVED: To provide a photoreceptor using a novel bis-azo pigment and having practical high sensitivity characteristics and stable potential characteristics during repetitive use. SOLUTION: The photoreceptor has a photosensitive layer on a support, in which the photosensitive layer contains the bis-azo pigment expressed by General Formula (1). In the formula, Ar represents any group. A<SB>1</SB>to A<SB>4</SB>represent formulas (2), (3). In the formulas, R<SB>1 to 2</SB>is H, alkyl group, aralkyl group, aryl group or heterocyclic group and may form a cyclic amino group via N; Z is O or S; (m) is 0 or 1. X is O, S or NH group: Y is an aromatic ring group, aromatic heterocycle. COPYRIGHT: (C)2006,JPO&NCIPI
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