Photographic element containing azole couplers
AssigneeEastman Kodak Company
InventorsMbiya Kapiamba, Donald R. Diehl, James L. Edwards, David G. Lincoln, Gary M. Russo
Life of this patent
Estimating the term…
Loading patent…
AssigneeEastman Kodak Company
InventorsMbiya Kapiamba, Donald R. Diehl, James L. Edwards, David G. Lincoln, Gary M. Russo
Estimating the term…
Disclosed is a photographic element comprising a support bearing a light sensitive silver halide emulsion layer having associated therewith a dye forming coupler having a formula I, wherein: Ballast is a group containing at least 6 aliphatic carbon atoms, V represents a chain of three or four atoms, which may be substituted, selected from C, N, O and S sufficient to form an aromatic ring fused to the azole ring and n is 0 or 1, provided that if n is 0, Y and Ballast are directly attached to the 5-membered azole ring, W is an electron withdrawing group selected from the group consisting of —CN, —CONR1R2, —CO2R1, —NO2, and —SO2R1 where R1 and R2 are H or substituents; X is H or a coupling-off group; Y is H or a substituent; Z is an atom or group selected from >N—R, —O—, and —S—.
A photographic element comprising a support bearing a light sensitive silver halide emulsion layer having associated therewith a dye forming coupler having a formula I,
Dependencies are inferred from the claim text.