Photographic silver halide emulsion containing contrast improving dopants
US5597686A · kind A · utility
4Cited by
14References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 27, 1995 |
| Grant date | Jan 28, 1997 |
| Priority date | — |
| Expiry date | Apr 27, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C1/08
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention provides a photographic emulsion comprising a silver halide grains containing at least two dopants. The dopants comprise an osmium-based transition metal complex containing a nitrosyl or thionitrosyl ligand, and a transition metal complex containing a transition metal selected from Group 8 of the periodic table.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.