Trigonal Se layer overcoated by bis(4-diethylamino-2-methylphenyl)phenylmethane containing polycarbonate
US4050935A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 2, 1976 |
| Grant date | Sep 27, 1977 |
| Priority date | — |
| Expiry date | Apr 2, 1996 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G5/0436
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A photosensitive member having at least two electrically operative layers is disclosed. The first layer comprises trigonal selenium which is capable of photogenerating holes and injecting the photo-generated holes into a contiguous charge transport layer. The charge transport layer comprises a transparent electrically inactive organic resinous material containing from about 15 to about 75 percent by weight (throughout) of bis(4-diethylamino-2-methylphenyl)phenylmethane. The charge transport layer while substantially non-absorbing in the spectral region of intended use, is "active" in that it allows injection of photo-generated holes from the trigonal selenium carrier generating layer, and allows these photo-generated holes to be transported through the charge transport layer. This structure may be imaged in the conventional xerographic mode which usually includes charging, exposure to light and development.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.