Silver halide photographic material
US4983509A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 15, 1989 |
| Grant date | Jan 8, 1991 |
| Priority date | — |
| Expiry date | Jun 15, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C2001/03535
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A silver halide photographic material is disclosed, comprising a support having thereon at least one hydrophilic colloid layer at least one of which must be a gold- and sulfur-sensitized silver halide emulsion layer, said silver halide emulsion layer containing from 0.1 to 3.0 mol % silver iodide per mol of silver, wherein said silver halide emulsion comprises silver halide grains having a substantial core/shell structure wherein the silver iodide content in the shell is less than that in the core, and the silver halide emulsion layer or other hydrophilic colloid layer contains a polymer represented by the formula (I) EQU --(A).sub.x (B).sub.y (C).sub.z (I) wherein A represents a recurring monomer unit derived from an ethylenically unsaturated monocarboxylic acid or a monocarboxylate thereof, capable of copolymerization with an ethylenically unsaturated monomer; B represents a recurring unit derived from a polyfunctional crosslinking agent; C represents a recurring unit of an ethylenically unsaturated monomer, other than A or B; x represents the number of recurring units A having a mole fraction of from 30 mol % to 100 mol %; y represents the number of recurring units B having a mo…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.