Eastman-Kodak Company

Paul A Zielinski

Samir Y Farid

Annabel A Muenter

Jerome Robert Lenhard

Ian R Gould

Stephen A Godleski

Ramanuj Goswami

Robert James Perry

Chin H Chen

Carl A Marrese

Anthony Adin

Lal C Vishwakarma

Donald L Kerr

Jerome J Looker

Michael D Purol

Deepak Shukla

Donald R Diehl

Margaret Jones Helber

Doreen Catherine Lynch

William Donald Ramsden

Kevin W Williams

Charles H Weidner

David G Baird

Cataldo A Maggiulli

LuAnn K Weinstein

Chang Kyu Kim

Thermally developable imaging materials containing heat-bleachable antihalation composition

Silver halide light sensitive emulsion layer having enhanced photographic sensitivity

A UV or visible-light sensitive photobleachable dye composition substantially free of polymerizable monomer comprising a photobleachable dye and an N-oxyazinium compound, a photographic element containing such a photobleachable composition, and a method for bleaching a photographic element.

Photobleachable composition, photographic element containing the composition and photobleachable method

A photographic element comprising at least one silver halide emulsion layer in which the silver halide is sensitized with a compound of the formula:

This invention comprises a photographic element comprising a support and at least one silver halide emulsion layer in which the silver halide is sensitized with a compound of the formula:

Silver halide light sensitive emulsion layer having enhanced

A photographic element comprising at least one silver halide emulsion layer in which the silver halide is sensitized with a compound of the formula: ##STR1## wherein A is a silver halide adsorptive group that contains at least one atom of N, S, Se, or Te that promotes adsorption to silver halide, and Z is a light absorbing group including for example cyanine dyes, complex cyanine dyes, merocyanine dyes, complex merocyanine dyes, homopolar cyanine dyes, styryl dyes, oxonol dyes, hemioxonol dyes, and hemicyanine dyes, and XY is an fragmentable electron donor moiety in which X is an electron donor group and Y is a leaving group other than hydrogen, and wherein:

A photographic element comprises at least one silver halide emulsion layer in which the silver halide is sensitized with a compound of formula

This invention comprises a photographic element comprising at least one silver halide emulsion layer in which the silver halide is sensitized with a compound of the formula X--H, wherein X is an electron donor moiety to which a base, B.sup.-, is covalently linked and H is a leaving hydrogen atom, and wherein:

A photographic element comprising at least one silver halide emulsion layer in which the silver halide is sensitized with a compound of the formula: ##STR1## wherein A is a silver halide adsorptive group that contains at least one atom of N, S, Se, or Te that promotes adsorption to silver halide, and L represents a linking group containing at least one C, N, S or O atom, k is 1 or 2, and XY is an fragmentable electron donor moiety in which X is an electron donor group and Y is a leaving group other than hydrogen, and wherein:

A photographic element comprises a support and at least one silver halide emulsion layer in which the silver halide is sensitized with a fragmentable electron donor of the formula X--Y, wherein X is an electron donor moiety and Y is a leaving group other than hydrogen, and wherein:

Substituted hydroxylamine antioxidants can be prepared by reacting hydroxylamine or a mono-substituted hydroxylamine with an epoxide. The antioxidant reaction product is not removed from the reaction mixture, but is used without separation after combination with a color developer to provide a photographic color developer composition. The antioxidants are highly water soluble and thus exhibit no objectionable odor.

Photographic color developer reaction mixture

Heat bleachable antihalation compositions are prepared using metallized or unmetallized formazan dyes, hexaarylbiimidzoles having alkoxy substituents and organic carboxylic acids. These compositions are rapidly bleached at relatively low temperatures and can be used in photothermographic elements.

Heat bleachable antihalation composition, elements containing same and

A thermal recording element comprising a support having thereon a dye layer comprising a polymeric binder containing:

Thermal imaging recording element

A thermal recording element comprising a support having thereon a dye layer comprising a polymeric binder containing: (a) a formazan dye that absorbs at from about 400 to about 850 nm, and (b) a hexaarylbiimidazole which is an oxidative dimer of a 2,4,5-triarylimidazole having one of the following formulas: ##STR1##

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Rochester, NY, United States of America

Paul A Zielinski