Abstract: Novel silver compounds can include a primary core of a photosensitive silver halide and a shell covering the primary core. This shell includes one or more non-photosensitive silver salts, each silver salt including an organic silver coordinating ligand. Other novel silver compounds are homogeneous silver salts of organic silver coordinating ligands throughout (non-core-shell). Still other silver compounds can include a primary core of a non-photosensitive metal salt and a shell covering the primary core. This shell includes one or more non-photosensitive silver salts, each silver salt including an organic silver coordinating ligand. These types of silver compounds can be used as sources of reducible silver ions in thermally developable imaging materials including thermographic and photothermographic materials.
Type:
Grant
Filed:
July 30, 2002
Date of Patent:
October 12, 2004
Assignee:
Eastman Kodak Company
Inventors:
Boris B. Bokhonov, Lilia P. Burleva, David R. Whitcomb, Nepal C. Howlader, Louis M. Leichter