Silver halide photographic materials
US4565778A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 26, 1984 |
| Grant date | Jan 21, 1986 |
| Priority date | — |
| Expiry date | Mar 26, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C2200/06
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Silver halide photographic materials with higher sensitivity and less fogging having at least one silver halide emulsion layer over a photographic base or support wherein the emulsion of said emulsion layer substantially contains core/shell-type silver halide grains or core/shell-type monodisperse silver halide grains, core portion of said grain containing silver iodide in a greater amount than that contained in shell portion of said grain and said emulsion is subjected to chemical ripening in the presence of a labile selenium compound, optionally with coexistence of a silver halide solvent, and said emulsion may contain further a specific phenol compound.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.