Electrophotosensitive material

Details Electrophotosensitive material Electrophotosensitive material

2006-09-05

2006-09-05

Rodee, Christopher (Department: 1756)

Radiation imagery chemistry: process, composition, or product th

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

Radiation-sensitive composition or product

C430S078000, C430S133000

Reexamination Certificate

active

07101647

ABSTRACT:
The present invention provides an electrophotosensitive material which realizes uniform dispersion of phthalocyanines in a photosensitive layer and has high sensitivity to a digital light source, and also excellent in charge stability under the high temperature atmosphere, weatherability and NOx resistance. The electrophotosensitive material is produced by forming a single-layer type or multi-layer type photosensitive layer containing phthalocyanine as an electric charge generating material, an electric charge transferring material, a predetermined insoluble azo pigment and a predetermined binder resin on a conductive substrate and using, as the insoluble azo pigment, an insoluble azo pigment having no OH group in the molecule wherein (i) an absorbance in an absorption wavelength range of phthalocyanine is ⅓ or less of an absorbance of the phthalocyanine in the wavelength range, or (ii) an absorbance in a wavelength range of an exposure light source of an image forming apparatus is ⅓ or less of an absorbance of the phthalocyanine in the wavelength range.

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Patent Abstract of Japan, vol. 015, No. 176, Publication No. 03037663, Publication Date: Feb. 19, 1991.

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