Supersensitization of silver halide emulsions
US5013622A · kind A · utility
11Cited by
6References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 12, 1986 |
| Grant date | May 7, 1991 |
| Priority date | — |
| Expiry date | Dec 12, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C1/28
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Supersensitization of silver halide emulsions is effected by the addition of a metal chelating agent after chemical sensitization or a combination of phenylmercaptotetrazoles and a metal chelating agent to a spectrally sensitized emulsion. The contrast of the emulsion may also be increased by the addition of this combination of materials after chemical and spectral sensitization.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.