Eastman-Kodak Company

Robert E Ross

Lee J Fleckenstein

Wilbur S Gaugh

Jose M Fernandez

Michael D McCreary

Jon T Staples

Michael E Campbell

Wayne F Erikson

Useful scavengers for oxidized developing agents in photographic elements are 2,4-disulfonamidophenols, or alkali labile precursors of such phenols.

Photographic elements containing 2,4-disulfonamidophenol scavengers for

Photographic elements, diffusion transfer assemblages and processes are described which employ a nondiffusible, redox, dye-releasing compound comprising a ballasted, sulfonamidophenol or sulfonamidonaphthol compound having a dye moiety attached thereto through the sulfonamido group of the compound, the sulfonamido group being located in a position which is conjugated with respect to the position of the hydroxy group of the compound, and wherein

Photographic products and processes employing substituted

Photographic elements, film units and processes are described wherein certain ballasted di-2,5-sulfonamidophenols are used to scavenge oxidized electron transfer agents in color image transfer materials. The scavenger compounds can be located in an emulsion layer, a dye image-providing material layer or an interlayer.

Sulfonamido phenol scavenger compounds

A novel class of redox releasing compounds contains an N,N-disubstituted carbamoyl ballast group. These compounds can be used in photographic elements and processes to release a dye or other photographically useful group as a function of silver halide development.

Photographic sulfonamido compounds and elements and processes using them

Color developer compositions are described which contain, dissolved therein, both (a) an organic aromatic primary amino developing agent and (b) a yellow-dye-forming coupler having the structure: ##SPC1## Wherein R is a branched alkyl group containing 3 to 6 carbon atoms; X is Cl or Br; Y is X, hydrogen or alkyl (1 to 8 carbon atoms); and A and B differ and are either H or --COOM, wherein M is a photographically inactive cation or a metyl or ethyl group. Use of such compositions results in more efficient coupler usage and color products having yellow dyes with improved aging characteristics. The invention encompasses such liquid developer compositions, blends of (a) and (b), and the yellow dye-forming couplers, per se.

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Rochester, NY, United States of America

Robert E Ross