High tabularity high chloride emulsions with inherently stable grain faces
US5292632A · kind A · utility
49Cited by
16References
12Claims
0Family size
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Inventor
Key dates
| Filing date | Mar 22, 1993 |
| Grant date | Mar 8, 1994 |
| Priority date | — |
| Expiry date | Mar 22, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C2200/01
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A radiation sensitive emulsion is disclosed containing a silver halide grain population internally free of iodide at the site of grain nucleation comprised of at least 50 mole percent chloride, based on total silver forming the grain population, in which greater than 30 percent of the grain population projected area is accounted for by tabular grains having a mean thickness of less than 0.3 .mu.m. The tabular grains combine high tabularities and relatively high aspect ratios with exceptional stability imparted by parallel major faces lying in {100} crystallographic planes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.