Electrophotosensitive material
US7101647B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 23, 2003 |
| Grant date | Sep 5, 2006 |
| Priority date | — |
| Expiry date | Apr 3, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G5/0696
- WIPO fieldOptics
- WIPO sectorInstruments
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.