Photosensitive member for electrophotography
AssigneeCanon Kabushiki Kaisha
InventorsMasataka Yamashita, Takao Takiguchi, Shoji Umehara, Masakazu Matsumoto, Shozo Ishikawa
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Abstract
A photosensitive member for electrophotography comprising a photosensitive layer containing an azo pigment selected from those represented by the following formulas (1)-(6): ##STR1## wherein R is an alkyl, aralkyl, aryl, or acyl each capable of having a substituent; Ar is an arylene or heterocyclic group each capable of having a substituent; Ar is a coupler residue group having a phenolic OH group; B is hydrogen, nitroso, or an alkyl, aralkyl, aryl or acyl group capable of having a substituent; and n is 0 or 1.
Claims17
A photosensitive member for electrophotography comprising a photosensitive layer containing an azo pigment selected from those represented by the following formulas (1)-(6):
- wherein R is alkyl, aralkyl, or acyl, each capable of having a substituent;
- Ar is an arylene or heterocyclic group;
- each capable of having a substituent;
- A is a coupler residue group having a phenolic OH group;
- B is hydrogen, nitroso, or an alkyl, aralkyl, aryl or acyl group capable of having a substituent;
- and n is 0 or 1;
- said azo pigment being (i) in a charge generation layer of a functionally separated photosensitive layer comprising said charge generation layer and a charge transportation layer or (ii) admixed with a charge transporting binder material;
- wherein said charge transporting binder material is a charge transporting binder or a mixture of a charge transporting substance and a binder.
A photosensitive member according to claim 10, wherein in the formula (1), R is alkyl or aryl, each capable of having a substituent.
Dependencies are inferred from the claim text.