Silver halide color photosensitive materials
US4746599A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 28, 1987 |
| Grant date | May 24, 1988 |
| Priority date | — |
| Expiry date | Apr 28, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C7/3041
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention relates to silver halide color photosensitive materials having improved tone and color reproductions. According to the present invention, there is provided a silver halide color photosensitive material wherein a coupler having the following general formula (I) is contained in a green-sensitive material and wherein a cyan gradation added to a specific image of a region in which a yellow and/or magenta image density obtained by color development exceeds 0.7, so as to increase cyan image gradation in the specific image region independently of the cyan density in a cyan coloring red-sensitive layer and as the yellow and/or magenta image density in the specific image region increases. Formula (I): ##STR1## wherein R.sub.11 represents a hydrogen atom or a substituent, X represents a hydrogen atom or a group which can be released upon a coupling reaction with an oxidized product of an aromatic primary amine developing agent, and Za, Zb and Zc each represents a methine, substituted methine, .dbd.N-- or --NH-- group; one of the Za-Zb bond and Zb-Zc bond is a double bond and the other is a single bond; when Zb-Zc is a carbon-to-carbon double bond, it may compose a part …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.