Minnesota Mining and Manufacturing Company

Eastman-kodak Company

Louis M Leichter

John J Stofko, Jr

Terrance P Smith

George V Tiers

Robert J Koshar

Krzysztof Antoni Zaklika

Susan K Jongewaard

Terry J Sonnonstine

Gary Timothy Boyd

David R Whitcomb

Cecil V Francis

David Edgar Brown

Eugene P Janulis

Paolo Beretta

Lilia P Burleva

Boris B Bokhonov

Nepal C Howlader

Roger A Mader

Alan G Miller

David C Weigel

Harvey A Brown

June M Armbruster

Kristen A Hoff

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.

Silver compounds and compositions, thermally developable materials containing same, and methods of preparation

Nonlinear optical (NLO) compositions are disclosed which contain polar disulfone-functionalized molecules (PDFMs) incorporated in a polymeric material. when aligned noncentrosymmetrically in the polymeric material, the PDFMs generate a second-order NLO response. There is also disclosed: a method of preparing a NLO composition; novel PDFMs and novel polymers; and a new process for preparing PDFMs.

Nonlinear optical materials containing polar disulfone-functionalized

A process for preparing polar disulfone-functionalized molecules, which process comprises performing one or more of the following reactions:

Method of preparing polar disulfone-functionalized molecules

Nonlinear optical (NLO) compositions are disclosed which contain polar disulfone-functionalized molecules (PDFMs) incorporated in a polymeric material. When aligned noncentrosymmetrically in the polymeric material, the PDFMs generate a second-order NLO response. There is also disclosed: a method of preparing a NLO composition; novel PDFMs and novel polymers; and a new process for preparing PDFMs.

The present invention comprises a pad assembly for carbonless sheets. The assembly comprises a plurality of carbonless sheets wherein each sheet is disposed in a stack and wherein each carbonless sheet has a band of repositionable pressure sensitive adhesive coated on a rear surface of the pad.

Carbonless pad assembly

Alkylsulfonylamino- and arylsulfonylaminoanthraquinone dyes are useful for thermal dye transfer imaging, when employed in dye donor sheets. These dyes give images having excellent light and heat fastness.

Thermal transfer imaging using sulfonylaminoanthraquinone dyes

Alkycarbonylaminoanthraquinones are useful for thermal dye transfer imaging when employed in dye donor sheets. These give images having excellent light and heat fastness.

Thermal transfer imaging using alkylcarbonylamino-anthraquinone dyes

Cyanine dyes, particularly indocyanine dyes, having at least 7 carbon atoms in the polymethine chain which may possess a fused cyclopentene or cyclohexene ring in the form of a tri-iodide salt exhibit a substantial reduction in the propensity to associate compared to dyes having the identical cation but different anion. The tri-iodide salts are particularly useful as sensitizers in organic photoconductor systems.

Dyes suitable for sensitization of photoconductive systems

Triiolide salts of cyanine dyes suitable for sensitization of

The use of phenazine, phenoxazine and phenothiazine color forming developers in photothermographic dry silver emulsions provides a stable imaging system under both light and dark storage.

Photohermographic emulsions having stable color forming developers

Thermographic composition comprising a leuco dye, a nitrate salt, and, optionally, an acid and stabilizing compound. The leuco dye contains a phenazine nucleus with naphthoyl substitutents on the 10-position and, optionally on one or both of the 3- and 7-positions through an amino group. In their oxidized form, the leuco dyes of this invention provide access to a range of red and magenta colors which exhibit greater stability when subjected to light and temperatures characteristic of the stage of overhead projectors than that exhibited by previously available leuco dyes of this color range.

Thermographic system using naphthoylated leuco phenazine dyes

Electron donor compounds for use in electrophotographic constructions must be sensitized to desired regions of the electromagnetic spectrum. Novel bis-benzocarbazole derivatives which can be used as organic electron donor compounds have been found to be sensitized by polyquinoid and polyanthroquinoid dyes.

Sensitized organic electron donor bis-benzocarbazole compounds

Organic electron donor compounds for use in electrophotographic constructions must ordinarily be sensitized to desired regions of the electromagnetic spectrum. Highly fluorinated aliphatic sulfonyl, carbonyl, or carbonyloxy dyes have been found to be efficient sensitizers for such organic donor compounds.

Growing community of inventors

Mendota Heights, MN, United States of America

Louis M Leichter