Electrophotographic photosensitive member, electrophotographic a

Details Electrophotographic photosensitive member, electrophotographic a Electrophotographic photosensitive member, electrophotographic a

1994-11-29

1996-11-19

Goodrow, John

Radiation imagery chemistry: process, composition, or product th

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

Radiation-sensitive composition or product

430 76, 430 78, G03G 506

Patent

active

055761313

ABSTRACT:
An electrophotographic photosensitive member is constituted by disposing a photosensitive layer on a support. The photosensitive layer contains oxytitanium phthalocyanine and a specific disazo pigment of the formula (I) or (II) each characterized by having particular coupler residues. The photosensitive layer may preferably include a charge generation layer and a charge transport layer. The charge generation layer may preferably include a first charge generation layer containing the above disazo pigment of the formula (I) or (II) and a second charge generation layer containing the above oxytitanium phthalocyanine. The electrophotographic photosensitive member including the photosensitive layer described above is usable for providing an apparatus unit and an electrophotographic apparatus showing excellent electrophotographic characteristics such as high photosensitivity, good potential stability in repetitive use and good image-forming properties substantially providing no black spots.

REFERENCES:
patent: 4664977 (1987-05-01), Osato et al.
patent: 4728592 (1988-03-01), Ohaku et al.
patent: 4994338 (1991-02-01), Takai
patent: 5132197 (1992-07-01), Iuchi et al.
patent: 5194354 (1993-03-01), Takai et al.
patent: 5262261 (1993-11-01), Kikuchi et al.
Abstract of JP 4-163558, published Jun. 1992.
Abstract of JP 5-66596, published Mar. 1993.
Patent Abstracts of Japan, vol. 15, No. 176 (P-1198), May 1991 of JP 3-037666.

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