James A Friday

US Patent:

6350564, Feb 26, 2002

Filed:

Oct 17, 2000

Appl. No.:

09/690310

Inventors:

Joseph F. Bringley - Rochester NY
James A. Friday - Rochester NY
Stephen P. Singer - Spencerport NY
Marcello Vitale - Rochester NY

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

G03C 110

US Classification:

430502, 430505, 430506, 430509, 430566, 430600, 430614, 430615

Abstract:

Disclosed is a color silver halide photographic element comprising a support bearing: (1) a light sensitive silver halide emulsion layer; (2) a nitrogen heterocycle with a minimum of three heteroatoms that does not react with oxidized developer, does not contain free thiol substituents, and has a ClogP sufficient to increase the photographic speed of said element compared to the same element without the compound, said heterocycle compound located either in said light sensitive layer or in a layer adjacent to it; and (3) a light reflecting silver halide material; provided that the heterocycle compound and the light reflecting material are located either (a) in different layers of the element located close enough to each other so that a super-additive speed increase is realized or (b) in the same light sensitive layer. The invention provides improved light sensitivity.

US Patent:

6350565, Feb 26, 2002

Filed:

Oct 17, 2000

Appl. No.:

09/690230

Inventors:

Joseph F. Bringley - Rochester NY
James A. Friday - Rochester NY
Marcello Vitale - Rochester NY

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

G03C 146

US Classification:

430506, 430505, 430507, 430510, 430567, 430383

Abstract:

A color photographic element containing a support bearing: (a) a red record comprising, in order from the support, a less and a more red light sensitive silver halide emulsion layer, each having associated therewith at least one cyan dye-forming coupler; (b) further from the support a green record comprising, in order from the support, a less and a more green light sensitive silver halide emulsion layer, each having associated therewith at least one magenta dye-forming coupler, and (c) still further from the support, a blue record comprising in order from the support, a less and a more blue light sensitive silver halide emulsion layer, each having associated therewith at least one yellow dye-forming coupler; wherein: (d) there is located below and only below the most red light sensitive layer of the red record a relatively non-light sensitive âsmall 3-D emulsion layerâ that is substantially free of red light absorbing dye.

US Patent:

6426180, Jul 30, 2002

Filed:

Oct 17, 2000

Appl. No.:

09/690569

Inventors:

Joseph F. Bringley - Rochester NY
James A. Friday - Rochester NY
Stephen P. Singer - Spencerport NY
Marcello Vitale - Rochester NY

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

G03C 106

US Classification:

430614, 430615, 430505, 430507, 430510, 430955

Abstract:

Disclosed is a color silver halide photographic element comprising a support bearing: (1) a light sensitive silver halide emulsion layer; (2) a nitrogen heterocycle with a minimum of three heteroatoms that does not react with oxidized developer, does not contain free thiol substituents, and has a C log P sufficient to increase the photographic speed of said element compared to the same element without the compound, said heterocycle compound located either in said light sensitive layer or in a layer adjacent to it; and (3) an ETARC, in or adjacent to said light sensitive silver halide emulsion layer, that releases, upon reaction with oxidized developer, an electron transfer agent having a C log P of at least 2. 40. The invention provides improved light sensitivity.

US Patent:

6455242, Sep 24, 2002

Filed:

Sep 18, 2001

Appl. No.:

09/954704

Inventors:

Philip A. Allway - Rickmansworth, GB
Bernard A. Clark - Maidenhead, GB
John D. Goddard - Pinner, GB
Louis E. Friedrich - Rochester NY
James A. Friday - Rochester NY
Stephen P. Singer - Spencerport NY
Marcello Vitale - Rochester NY

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

G03C 108

US Classification:

430600, 430503, 430505, 430506, 430546, 430551, 430611, 430613, 430615

Abstract:

Disclosed is a color photographic element comprising at least one of (1) a light sensitive silver halide emulsion layer and (2) a non-silver containing light insensitive layer, said at least one layer containing a compound with a minimum of three heteroatoms that does not react with oxidized developer and that has a ClogP sufficient to increase the photographic speed of said element compared to the same element without the compound. The invention provides improved light sensitivity.

US Patent:

6509144, Jan 21, 2003

Filed:

Jan 25, 1999

Appl. No.:

09/236821

Inventors:

Kenneth J. Reed - Rochester NY
Joseph P. Pepe - Penfield NY
James A. Friday - Rochester NY
Jon N. Eikenberry - Rochester NY
Yun C. Chang - Rochester NY
Annabel A. Muenter - Rochester NY
Jerome R. Lenhard - Fairport NY

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

G03C 110

US Classification:

430567, 430569, 430600, 430572, 430574, 430577, 430578, 430580, 430581, 430583, 430586

Abstract:

This invention comprises a photographic element comprising a support and at least one blue sensitive silver halide emulsion layer containing a tabular grain silver halide emulsion, or an emulsion in which the halide content is at least 50% chloride and no more than 5% iodide, wherein the emulsion is spectrally sensitized with at least one dye providing a peak sensitization between 446 and 500 nm and at least one dye providing a peak sensitization between 400 and 445 nm and additionally sensitized with a fragmentable electron donor of the formula: XâYâ. or an electron donor which contains an âXYâ moiety; wherein X is an electron donor moiety, Yâ is a leaving proton H or a leaving group Y, with the proviso that if Yâ is H a base, , is covalently linked directly or indirectly to X. and wherein: 1) XâYâ has an oxidation potential between 0 and about 1. 4 V; and 2) the oxidized form of XâYâ fragments to give the radical X and the leaving fragment Yâ; and, optionally, 3) the radical X has an oxidation potential -0.

US Patent:

6518008, Feb 11, 2003

Filed:

Jan 25, 1999

Appl. No.:

09/236818

Inventors:

James A. Friday - Rochester NY
Roger A. Bryant - Rochester NY
Annabel A. Muenter - Rochester NY
Jerome R. Lenhard - Fairport NY

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

G03C 108

US Classification:

430567, 430569, 430581, 430583, 430584, 430585, 430586, 430587, 430588, 430590, 430591, 430592, 430600

Abstract:

A multicolor photographic element comprising a support bearing a cyan dye image-forming unit comprising at least one red-sensitive silver halide emulsion layer having associated therewith at least one cyan dye-forming coupler, a magenta dye image-forming unit comprising at least one green-sensitive silver halide emulsion layer having associated therewith at least one magenta dye-forming coupler, a yellow dye image-forming unit comprising at least one blue-sensitive silver halide emulsion layer having associated therewith at least one yellow dye-forming coupler, wherein at least one of said silver halide emulsion layers contains a tabular grain silver halide emulsion having a halide content of at least 95% bromide and less than about 5% iodide, said iodide being substantially uniformly distributed in the silver halide grains of said emulsion, and said emulsion is sensitized with a fragmentable electron donor of the formula XâYâ or an electron donor which contains an âXYâ moiety; wherein X is an electron donor moiety, Yâ is a leaving proton H or a leaving group Y, with the proviso that if Yâ is a proton, a base, , is covalently linked directly or indirectly to X, and wherein: 1) XâYâ has an oxidation potential between 0 and about 1. 4 V; and 2) the oxidized form of XâYâ fragments to give the radical X* and the leaving fragment Yâ; âand, optionally, 3) the radical X* has an oxidation potential -0. 7V.

US Patent:

6531272, Mar 11, 2003

Filed:

Jan 25, 1999

Appl. No.:

09/236708

Inventors:

James A. Friday - Rochester NY
Joseph P. Pepe - Penfield NY
Jeffrey C. Hansen - Fairport NY
Annabel A. Muenter - Rochester NY
Jerome R. Lenhard - Fairport NY

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

G03C 108

US Classification:

430505, 430567, 430569, 430581, 430583, 430584, 430585, 430586, 430587, 430588, 430590, 430591, 430592, 430600

Abstract:

This invention comprises a multicolor photographic element comprising a support bearing a cyan dye image-forming unit comprising at least one red-sensitive silver halide emulsion layer having associated therewith at least one cyan dye-forming coupler, a magenta dye image-forming unit comprising at least one green-sensitive silver halide emulsion layer having associated therewith at least one magenta dye-forming coupler, a yellow dye image-forming unit comprising at least one blue-sensitive silver halide emulsion layer having associated therewith at least one yellow dye-forming coupler, wherein at least one of said layers comprises large tabular grains having an average circular diameter of greater than 2 m and contains a fragmentable electron donating compound is of the formula: XâYâ or a compound which contains a moiety of the formula âXâYâ; wherein X is an electron donor moiety, Yâ is a leaving proton H or a leaving group Y, with the proviso that if Yâ is a proton, a base, , is covalently linked directly or indirectly to X, and wherein: 1) XâYâ has an oxidation potential between 0 and about 1. 4 V; and 2) the oxidized form of XâYâ undergoes a bond cleavage reaction to give the radical X. and the leaving fragment Yâ; and, optionally, 3) the radical X.

US Patent:

6699652, Mar 2, 2004

Filed:

Jan 17, 2003

Appl. No.:

10/346273

Inventors:

Sharon G. Johnston - Rochester NY
Stephen P. Singer - Spencerport NY
Drake M. Michno - Webster NY
James A. Friday - Rochester NY
David R. Foster - Rochester NY

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

G03C 108

US Classification:

430558, 430506, 430570, 430600, 430611, 430613, 430615, 430572, 430574, 430581, 430509

Abstract:

This invention relates to a silver halide photographic element comprising a support bearing a cyan dye image-forming unit comprised of at least one red-sensitive silver halide emulsion layer having associated therewith at least one cyan dye-forming coupler, a magenta dye image-forming unit comprising at least one green-sensitive silver halide emulsion layer having associated therewith at least one magenta dye-forming coupler, and a yellow dye image-forming unit comprising at least one blue-sensitive silver halide emulsion layer having associated therewith at least one yellow dye-forming coupler, wherein at least one of the dye image forming units contains layers of differing sensitivities, and the layer of highest sensitivity contains a development promoting agent or a specific coupler as described herein, or a combination thereof, and a silver halide emulsion comprising tabular silver halide grains having associated therewith at least two dye layers comprising (a) an inner dye layer adjacent to the silver halide grain and comprising at least one dye, Dye 1, that is capable of spectrally sensitizing silver halide and (b) an outer dye layer adjacent to the inner dye layer and comprising at least one dye, Dye 2, wherein the dye layers are held together by more than one non-covalent force; the outer dye layer absorbs light at equal or higher energy than the inner dye layer; and the energy emission wavelength of the outer dye layer overlaps with the energy absorption wavelength of the inner dye layer.