Phthalocyanine photosensitive materials for electrophotography a

Details Phthalocyanine photosensitive materials for electrophotography a Phthalocyanine photosensitive materials for electrophotography a

1990-07-12

1992-02-11

Martin, Roland

Radiation imagery chemistry: process, composition, or product th

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

Radiation-sensitive composition or product

430 78, 430135, 430 57, G03G 5047, G03G 5087

Patent

active

050875400

ABSTRACT:
Photosensitive materials of the positive charging type which are useful in electrophotography are described. The material comprises a conductive support of any desired form and a photoconductive layer formed on the support. The photoconductive layer is made of X-type and/or .tau.-type phthalocyanine compound dispersed in a binder resin. The compound is dispersed partly in a molecular state and partly in a particulate state in the resin. To make such a dispersion, the compound is agitated in a solvent along with the binder resin until charge transportability and charge generating ability are developed in the resultant photoconductive layer. Fundamentally, single-layer photosensitive materials with good photosensitive characteristics and a high heat resistance can be obtained.

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patent: 3640710 (1972-02-01), Mammino et al.
patent: 3672979 (1972-06-01), Gerace et al.
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patent: 4619879 (1986-10-01), Kakuta
patent: 4868079 (1989-09-01), Khe et al.
Patent Abstracts of Japan, vol. 13, No. 269 (P-888)(3617) Jun. 21, 1989 and JP-A-1 62648 (Alps Electric Co., Ltd.), Mar. 9, 1989.
Patent Abstracts of Japan, vol. 12, No. 436 (P-787)(3283) Nov. 17, 1988, and JP-A-63 165864 (Hitachi Chem. Co., Ltd.), Jul. 9, 1988.
"Bulk Optical Properties of Phthalocyanine Pigment Particles", by R. O. Loutfy; Can. J. Chem., vol. 59, 1981.
"Evidence for Exciton Fusion as the Origin of Charge Production in Molecularly Doped Polymers", by T. E. Orlowski et al.; 1983 The American Physical Society.

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