Indirect electrophotographic process with a nitro-phenolsultonephthalein
US4054450A · kind A · utility
1Cited by
5References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 27, 1974 |
| Grant date | Oct 18, 1977 |
| Priority date | — |
| Expiry date | Jun 27, 1994 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G5/0637
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Fading of the light-sensitivity of a dye-sensitized photoconductive layer used repeatedly for image formation in indirect electrophotographic copying is avoided by employing a photoconductive layer sensitized by a nitro-substituted dye such as a nitro-fluorescein or a nitro-phenolsulfonephthalein.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.