Photographic element containing a high dye-yield coupler with methine dye chromophore

US5457004A · kind A · utility

Assignee

• EASTMAN KODAK COMPANY · US

Inventors

• Jared B. Mooberry · Rochester, US
• James J. Seifert · Hilton, US
• David Hoke · Rochester, US
• Zheng Z. Wu · Penfield, US
• David T. Southby · Rochester, US
• Frank D. Coms · Fairport, US

Key dates

• Filing date: May 27, 1994
• Grant date: Oct 10, 1995
• Expiry date: May 27, 2014

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S430/156
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

The invention provides a photographic element comprising a substrate bearing a photographic silver halide emulsion layer having associated therewith a high dye-yield coupler having the formula: ##STR1## wherein: COUP is a photographic coupler residue capable of coupling with oxidized color developer to form a first dye; PA0 T is a timing group; PA0 m is an integer from 0 to 2; PA0 L is a linking group selected from the group consisting of --OC(.dbd.O)--, --OC(.dbd.S)--, --SC(.dbd.O)--, --SC(.dbd.S)--, and --OC(.dbd.NSO.sub.2 R) where R is substituted or unsubstituted alkyl or aryl; and PA0 DYE is a releasable second dye or dye precursor having a particular formula including a methine dye chromophore.