Laminated photosensitive material for electrophotography
US4226928A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 5, 1978 |
| Grant date | Oct 7, 1980 |
| Priority date | — |
| Expiry date | Jan 5, 1998 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G5/047
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
In a laminated photosensitive material for electrophotography, an intermediate layer comprising, incorporated in a binder, phthalocyanine or a phthalocyanine derivative and a polycyclic aromatic nitro compound at a specific ratio is formed on an electrically conductive substrate, and a top layer comprising an organic polymeric photoconductor and the above polycyclic aromatic nitro compound at a specific ratio is laminated on the intermediate layer. In this photosensitive material, the dark decay speed is controlled in a range suitable for application to the repeated copying operation and the residual potential left on the exposure area can be reduced to a negligible level. Accordingly, occurrence of fogging is prevented and the toner transfer efficiency is improved. Further, this photosensitive material has improved mechanical, chemical and electric durabilities, and therefore, the life of the photosensitive material is remarkably prolonged.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.