Process of forming a dye image
US5695914A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 12, 1996 |
| Grant date | Dec 9, 1997 |
| Priority date | — |
| Expiry date | Apr 12, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C7/407
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method of producing a dye image by processing an imagewise exposed color photographic element containing at least one silver halide emulsion layer, the emulsion layer being comprised of both latent image and non-latent image containing silver halide grains, and having a distribution of Compound X, Compound X being either a ballasted coupler capable of reacting with an oxidized developing agent of a developing solution, or a ballasted developing agent capable, in an oxidized state, of reacting with a component of a developing solution, said method comprising: PA0 A. contacting the photographic element with a first developing solution to develop the latent image containing grains and to imagewise convert the distribution of Compound X to a first dye; PA0 B. rendering the non-latent image containing grains developable; and PA0 C. contacting the photographic element with a second developing solution to develop the non-latent image containing grains, and to convert residual Compound X to a second dye; wherein the first dye has a spectral characteristic which is non-coextensive with that of the second dye.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.