Hydrolyzed azolium speed enhancing/fog-inhibiting agents for silver halide photography
US4578348A · kind A · utility
7Cited by
6References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 18, 1985 |
| Grant date | Mar 25, 1986 |
| Priority date | — |
| Expiry date | Mar 18, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C1/34
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Radiation sensitive silver halide photographic elements are disclosed which are protected from fog by hydrolyzed quaternized chalcogenazolium salts of middle chalcogens, wherein the quaternizing substituent contains a ##STR1## group in which T and T.sup.1 are carbonyl or sulfonyl and m is from 1 to 3.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.