Photographic emulsions and elements containing agel crystals forming epitaxial junctions with AgI crystals
US4094684A · kind A · utility
28Cited by
2References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 18, 1977 |
| Grant date | Jun 13, 1978 |
| Priority date | — |
| Expiry date | Feb 18, 1997 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C2001/03552
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Photographic emulsions and elements are disclosed containing composite silver halide crystals. The composite crystals are comprised of multi-faceted, radiation-receptive silver iodide crystals having a minimum mean diameter of at least 0.1 micron and silver chloride crystals forming 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. The silver chlorides 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.