Silver halide emulsion chemically ripened in the presence of a gold-containing complex
US5198331A · kind A · utility
3Cited by
3References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 3, 1991 |
| Grant date | Mar 30, 1993 |
| Priority date | — |
| Expiry date | Jul 3, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C1/10
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method for preparing a silver halide emulsion containing silver halide grains comprising PA0 (i) preparing a mixture by mixing a compound represented by the following Formula (1) or (2), and a gold compound; and PA0 (ii) performing chemical ripening of the emulsion by adding said mixture thereto: ##STR1## wherein M, R, V and W independently represent a hydrogen atom or a substituent group; V and W may combine with each other to form a ring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.