Photographic emulsion containing transition metal complexes
US5500335A · kind A · utility
12Cited by
14References
23Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 31, 1994 |
| Grant date | Mar 19, 1996 |
| Priority date | — |
| Expiry date | Oct 31, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C1/09
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention provides a photographic emulsion comprising comprising silver halide grains, an iridium containing hexacoordination complex, and at least two grain surface modifiers, wherein the first of the grain surface modifiers is a transition metal complex comprising a nitrosyl or thionitrosyl ligand with a transition metal selected from the Groups 5 to 10, inclusive, of the periodic table, and the second of the grain surface modifiers is a transition metal complex comprising a transition metal, other than iridium, which is selected from Groups 7 to 10, inclusive, of the periodic table.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.