Novel silver halide crystal and process for production of same
US4710455A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 2, 1986 |
| Grant date | Dec 1, 1987 |
| Priority date | — |
| Expiry date | Apr 2, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C1/035
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Disclosed is silver halide cubic crystal having a depression on each face thereof and/or a hollow portion formed by joining of the depression with other depressions. This crystal may be produced by precipitating first monodisperse cubic type silver halide crystals and then precipitating second silver halide having a lower solubility than the first silver halide crystals by controlled doublejet precipitation method to dissolve the first silver halide crystals. There are also disclosed a silver halide photographic emulsion comprising such silver halide crystal and a silver halide photographic high-sensitive material containing said silver halide to which a spectral sensitizing dye is adsorbed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.