Silver halide color photographic material having improved dye image stability
US5006453A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 10, 1988 |
| Grant date | Apr 9, 1991 |
| Priority date | — |
| Expiry date | May 10, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C7/3882
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present inventioin calls for a silver halide color photographic material comprising a support having thereon at least one silver halide photographic emulsion layer containing a dispersion of oleophilic fine particles containing at least one diffusion resistant oil-soluble coupler which forms a substantially nondiffusible dye upon coupling with an oxidation product of an aromatic primary amine developing agent and at least one water-immiscible coupler solvent having a melting point of not more than 100.degree. C. and a boiling point of not less than 140.degree. C., wherein said oil-soluble coupler is represented by formula (Cp-I), (Cp-II) or (Cp-III) the dispersion of oleophilic fine particles is a dispersion obtained by emulsifying or dispersing a mixture containing at least one of the above couplers, at least one of the above coupler solvents and at least one water-insoluble and organic solvent-soluble homopolymer or copolymer composed of at least one repeating unit which does not have an acid group in the main chain or side chain thereof. The silver halide color photographic material can provide dye images, the prevention from light fading and dark fading of which is well bal…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.