Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Radiation-sensitive composition or product
Patent
1998-12-15
2000-04-25
Goodrow, John
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Radiation-sensitive composition or product
430 78, G03G 506
Patent
active
060542373
ABSTRACT:
An object of the invention is to provide a highly characteristic image using an electrophotographic photoreceptor of which a charge-generating layer can be produced with a better coating property and which is highly sensitive and electrostatically highly stable in repeated use. The charge-generating layer of a function-separated type photoreceptor contains a n-type non-metallic phthalocyanine and a copolymer of vinyl chloride-vinyl acetate type. Particularly, the ratio of the .tau.-type non-metallic phthalocyanine to the copolymer of vinyl chloride-vinyl acetate type is fixed at 1/3-3/1 by weight. The thickness of the charge-generating layer is fixed at 0.1-0.6 .mu.m. As the copolymer of vinyl chloride-vinyl acetate type, copolymers of vinyl chloride-vinyl acetate, vinyl chloride-vinyl acetate-maleic acid, or vinyl chloride-vinyl acetate-vinyl alcohol are selected. Particularly, it is favorable to select those containing at least 10% by weight of the vinyl alcohol component. The charge-generating layer is formed with a liquid coating material using a ketone solvent as dispersant. The aforementioned photoreceptor is applied to an image-forming apparatus using an inversion development process.
REFERENCES:
patent: 5087540 (1992-02-01), Murakami et al.
patent: 5312705 (1994-05-01), Tsuchiya et al.
patent: 5804344 (1998-09-01), Mitsumori
Patent Abstracts of Japan, vol. 95, No. 2, Mar. 31, 1995 & JP 06 308754 A (TOXO INK), Nov. 4, 1994.
Patent Abstracts of Japan, vol. 95, No. 2, Mar. 1995 & JP 06 308755 A (TOYO INK), Nov. 4, 1994.
Ishida Kazuya
Katayama Satoshi
Kawahara Akihiko
Morimoto Kiyofumi
Morita Kazushige
Goodrow John
Sharp Kabushiki Kaisha
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