Charles H Vogt

US Patent:

6743573, Jun 1, 2004

Filed:

Feb 3, 2003

Appl. No.:

10/356823

Inventors:

Margaret J. Helber - Rochester NY
Charles H. Vogt - Fairport NY
David T. Southby - Rochester NY

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

G03C 1775

US Classification:

430519, 430523, 430538

Abstract:

This invention provides a black and white silver halide photographic display element comprising a support and a layer on top of said support comprising baryta and a yellow pigment represented by Formula I wherein each of R , R , and R independently represents a halogen atom, or a substituted or unsubstituted alkyl, alkenyl, aryl, aralkyl, cycloalkyl, alkoxy, or alkyl amino group of 1 to 8 carbon atoms, or a substituted or unsubstituted aminocarbonyl, alkoxycarbonyl or alkylthio group of 2 to 10 carbon atoms, or a substituted or unsubstituted alkylsulfonyl, arylsulfonyl or sulfamoyl group of 1 to 8 carbon atoms, or a nitro, amino, acetamido, hydroxy, cyano, carboxy, carboxylate, sulfonic acid, or sulfonate group, additionally pairs of R or R may represent the non-metallic atoms necessary to complete a substituted or unsubstituted ring system containing at least one 5- or 6-membered heterocyclic or carbocylic fused ring; and n, m and r are independently 0 to 5.