Photographic emulsion containing transition metal complexes
US5474888A · kind A · utility
15Cited by
11References
25Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 31, 1994 |
| Grant date | Dec 12, 1995 |
| Priority date | — |
| Expiry date | Oct 31, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C2001/0845
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention provides a photographic emulsion silver halide grains having incorporated therein or thereon a dopant, a grain surface modifier, and a hexacoordination complex comprising iridium, wherein the grain surface modifier 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 dopant is a transition metal complex comprising a transition metal, other than iridium, which is selected from Groups 7 to 10 of the periodic table.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.