Silver halide emulsion, production process thereof and novel pyridinium compound
US6773876B2 · kind B2 · utility
0Cited by
8References
6Claims
0Family size
Assignee
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Key dates
| Filing date | Jan 30, 2002 |
| Grant date | Aug 10, 2004 |
| Priority date | — |
| Expiry date | Jan 30, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C2200/43
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A silver halide emulsion comprising tabular grains having a very small thickness with the main surfaces thereof having a very large surface area and being (111) face, is disclosed.More specifically, a silver halide emulsion is disclosed, comprising light-sensitive silver halide grains having a silver bromide content of 70 mol % or more, with 60 % or more of the entire projected area of said silver halide grains being occupied by tabular grains having an average grain thickness of less than 0.04 &mgr;m, an average equivalent-circle diameter of 4 &mgr;m or more, and (111) face as main surfaces.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.