Electrophotographic photosensitive member, process cartridge and

Details Electrophotographic photosensitive member, process cartridge and Electrophotographic photosensitive member, process cartridge and

1999-03-03

2000-03-21

Goodrow, John

Radiation imagery chemistry: process, composition, or product th

Electric or magnetic imagery, e.g., xerography,...

Radiation-sensitive composition or product

430 74, G03G 506

Patent

active

060401001

ABSTRACT:
An electrophotographic photosensitive member is formed of a support, and a photosensitive layer disposed on the support. The photosensitive layer is characterized by containing an azo pigment having an organic group represented by formula (1) below: wherein A denotes a residue group of formula (1A) below: ##STR1## and k.sub.1, k.sub.2, Z.sub.1, Z.sub.2, D; R.sub.1 and R.sub.2 are defined in the text. The group of the formula (1) may provide at least one of up to 4 azo-substituents of the azo pigment having an entire structure represented by ##STR2## wherein Ar denotes an aromatic or heterocyclic core unit, Cp denotes a coupler residue group, and --(N.dbd.N--Cp) denotes such an azo-substituent. The photosensitive member can exhibit good electrophotographic performances including high and stable sensitivity on repetitive use.

REFERENCES:
patent: 5246805 (1993-09-01), Miyazaki et al.
patent: 5411828 (1995-05-01), Kashizaki
Patent Abstracts of Japan, vol. 97, No. 1, Jan. 97 for JP8-227166.
Patent Abstracts of Japan, vol. 11, No. 170 (P-581) Jun. 1987 for JP 62-2267.
Patent Abstracts for Japan, vol. 96, No. 8, Aug. 1996 for JP8-87124.

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