Controlled site epitaxial sensitization of limited iodide silver halide emulsions
US4463087A · kind A · utility
21Cited by
9References
40Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 20, 1982 |
| Grant date | Jul 31, 1984 |
| Priority date | — |
| Expiry date | Dec 20, 2002 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C2001/03594
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Silver halide emulsions of limited iodide content, processes for the preparation of these emulsions, photographic elements incorporating these emulsions, and processes for the use of the photographic elements are disclosed. In the emulsions silver halide grains predominantly bounded by {111} crystal faces and containing insufficient iodide to direct silver salt epitaxy to selected surface sites of the grains are present. Silver salt is epitaxially located on and substantially confined to selected surface sites of the silver halide grains, this being accomplished by the use of an adsorbed site director.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.