Yellow coupler and its use
Abstract
Abstract A COUPLER CAPABLE OF FORMING A YELLOW COLOR IMAGE IN COLOR PHOTOGRAPHY HAS AN OPEN CHAIN ACTIVE METHYLENE GROUP BONDED TO TWO ADJACENT CARBONYL GROUPS. ONE OF THE HYDROGEN ATOMS OF THE ACTIVE METHYLENE IS SUBSTITUTED BY A GROUP OF THE FORMULA -N<(-SO2-Q-CO-) WHEREIN Q IS -(CH2)2-, >C(-R1)-R2, -(X,Y-1,2-PHENYLENE)-, OR -(2,3-NAPHTHYLENE)- R1 AND R2 ARE LOWER ALKYL, X IS HYDROGEN, HALOGEN OR ALKOXY, AND Y IS HYDROGEN, HALOGEN, AMINO, ACYLAMIDE, UREIDE, LOWER ALKYL, ALKOXY OR HYDROXY. A METHOD IS DISCLOSED FOR FORMING A YELLOW COLOR IMAGE ON A LIGHT SENSITIVE COLOR PHOTOGRAPHIC MATERIAL USING THIS COUPLER. THE DEVELOPER YELLOW COLOR IMAGE EXHIBITS EXCELLENT LIGHT AND HUMIDITY FASTNESS.
Inventors
- 👤 I Inoue
- 👤 T Endo
- 👤 S Matsuo
- 👤 M Taguchi
- 👤 T Yamamoto
Bibliographic Details
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