Method of forming dye image
US4289847A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 21, 1980 |
| Grant date | Sep 15, 1981 |
| Priority date | — |
| Expiry date | Jul 21, 2000 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C7/30535
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to a method of forming a dye image which involves processing a light-sensitive silver halide photographic image, after its imagewise exposure, in the presence of a novel yellow coupler as depicted in the formula below and an aromatic primary amine color developing agent ##STR1## wherein R.sub.1 represents cyano, alkyl carbonyl, phenylalkyl carbonyl, phenoxy alkyl carbonyl, phenylthio alkyl carbonyl, arylcarbonyl, alkyl phenyl carbonyl, alkoxy phenyl carbonyl, R.sub.2, R.sub.3, R.sub.4, R.sub.5 independently are hydrogen, halogen, alkyl, alkoxy, aryloxy, alkylacyloxy, arylacyloxy, acylamino, N-alkyl carbamoyl, N-phenylcarbamoyl, alkylsulfonamido, arylsulfonamido, N-alkyl sulfamoyl, N-phenylsulfamoyl, or imido, R.sub.6 represents cycloalkyl, alkenyl, naphthyl, thienyl, benzothienyl, furyl, or pyranyl, or a group of the formula (II): ##STR2## wherein R.sub.7, R.sub.9 and R.sub.11 are each hydrogen or alkyl, the sum of the carbon atoms in R.sub.7, R.sub.9 and R.sub.11 being 5 to 20, R.sub.8 and R.sub.10 are hydrogen, and Y represents non-metal atoms required for forming 2,5-dioxo-imidazolidine, 2-3,5-trioxo-imidazolidine, 2,5-dioxo-triazolidine, 2,4-oxazol…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.