Persistent photoconductive compositions
US4033769A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 30, 1974 |
| Grant date | Jul 5, 1977 |
| Priority date | — |
| Expiry date | Oct 30, 1994 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/10
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Photoconductive compositions comprising an organic photoconductive material, an activator capable of forming a charge transfer complex with the photoconductive material, and a protonic acid. Imaging members provided with an imaging layer prepared from the above composition are highly light sensitive, requiring only brief exposure times, and exhibit a photoinduced state of elevated conductivity which persists long after exposure to light is terminated. These compositions can be returned to their relatively insulative state by merely subjecting the imaging layer to heat in the dark, thereby erasing this photoinduced image pattern of elevated conductivity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.