Converted-halide photographic emulsions and elements having composite silver halide crystals
US4142900A · kind A · utility
21Cited by
7References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 18, 1977 |
| Grant date | Mar 6, 1979 |
| Priority date | — |
| Expiry date | Feb 18, 1997 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C2001/03552
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Converted-halide photographic emulsions and elements are disclosed containing composite silver halide crystals. The composite crystals are comprised of multifaceted, radiation-sensitive silver iodide crystals. Silver halide crystals at least partially converted from silver chloride to silver bromide form epitaxial junctions with the silver iodide crystals. At least half of the facets of the silver iodide crystals are substantially free of epitaxial silver chloride, and the converted silver halide crystals are limited to less than 75 mole percent, based on the total silver halide forming the composite crystals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.