Photographic silver halide emulsion containing contrast improving grain surface modifiers
US5256530A · kind A · utility
6Cited by
14References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 12, 1993 |
| Grant date | Oct 26, 1993 |
| Priority date | — |
| Expiry date | Jan 12, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C1/09
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention provides a photographic silver halide emulsion containing at least two grain surface modifiers. The grain surface modifiers comprise a transition metal complex containing a transition metal chosen from Groups V to X, inclusive, of the periodic table and a nitrosyl or thionitrosyl ligand; and a transition metal selected from Group VIII of the periodic table.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.