Two Or More Cyanine Sensitizers Patents (Class 430/574)
  • Patent number: 9691997
    Abstract: A semiconductor device can be prepared with a gate dielectric layer that comprises: (1) a photochemically or thermally crosslinked product of a photocurable or thermally curable thiosulfate-containing polymer that has a Tg of at least 50° C. and that comprises: an organic polymer backbone comprising (a) recurring units comprising pendant thiosulfate groups; and further comprises charge balancing cations, and (2) optionally, an electron-accepting photosensitizer component.
    Type: Grant
    Filed: June 11, 2014
    Date of Patent: June 27, 2017
    Assignee: EASTMAN KODAK COMPANY
    Inventors: Deepak Shukla, Kevin M. Donovan
  • Patent number: 9637581
    Abstract: A photocurable or thermally curable thiosulfate-containing polymer has (a) recurring units and (d) recurring units, shown as either Structure (I) or (II) and Structure (V) below: R represents the organic polymer backbone, G is a single bond or divalent linking group, Q+ is an organic charge balancing cation, M represents a charge balancing cation, and “a” represents at least 0.5 mol % and to 99.5 mol % of (a) recurring units; R? represents the organic polymer backbone, G? is a carbonyloxy group, R3 comprises a monovalent linear, branched, or carbocyclic non-aromatic hydrocarbon group having 1 to 18 carbon atoms, or it comprises a phenyl group having one or more such substituents, and “d” represents at least 0.5 mol % and to 99.5 mol % of (d) recurring units. These thiosulfate-containing polymers can be used to made dielectric compositions and gate dielectric layers in various devices.
    Type: Grant
    Filed: June 11, 2014
    Date of Patent: May 2, 2017
    Assignee: Eastman Kodak Company
    Inventors: Deepak Shukla, Kevin M. Donovan, Mark R. Mis
  • Patent number: 8409792
    Abstract: Silver halide photographic elements that are color intermediate motion picture films have at least one green sensitive silver halide emulsion that includes a green sensitizing dye that is a cyanine dye having two oxazole groups in the molecule, and another green sensitizing dye having either two imidazole groups in the molecule or one oxazole group and one thiazole group in the molecule. The molar ratio of the first green sensitizing dye to the second green sensitizing dye is from about 4:1 to about 0.3:1. The magenta dye image forming unit has at least one green sensitive silver halide emulsion layer that comprises predominantly cubic silver iodobromide grains having at least 90 mol % bromide and at least 1 mol % iodide, which grains have an average equivalent spherical diameter (ESD) of less than 0.25 ?m.
    Type: Grant
    Filed: February 14, 2011
    Date of Patent: April 2, 2013
    Assignee: East Kodak Company
    Inventor: Jeffrey C. Hansen
  • Patent number: 7998665
    Abstract: Silver halide photographic elements that are color intermediate motion picture films have at least one green sensitive silver halide emulsion that includes a green sensitizing dye that is a cyanine dye having two oxazole groups in the molecule, and another green sensitizing dye having either two imidazole groups in the molecule or one oxazole group and one thiazole group in the molecule. The molar ratio of the first green sensitizing dye to the second green sensitizing dye is from about 4:1 to about 0.3:1. The magenta dye image forming unit has at least one green sensitive silver halide emulsion layer that comprises predominantly cubic silver iodobromide grains having at least 90 mol % bromide and at least 1 mol % iodide, which grains have an average equivalent spherical diameter (ESD) of less than 0.25 ?m.
    Type: Grant
    Filed: March 8, 2010
    Date of Patent: August 16, 2011
    Assignee: Eastman Kodak Company
    Inventor: Jeffrey C. Hansen
  • Patent number: 7238467
    Abstract: A silver halide emulsion comprising silver halide grains covered with two dye layers in combination. The two dye layers comprises an inner dye layer adjoining to the silver halide grain, and containing at least one sensitizing dye capable of spectrally sensitizing silver halide, and an outer dye layer adjoining to the inner dye layer, and containing at least two dyes. The light absorption energy of the outer dye layer is equal to or higher than that of the inner dye layer, an energy-releasing wavelength of the outer dye layer overlaps with an energy-absorbing wavelength of the inner dye layer, the sensitizing dyes constituting the inner dye layer include an anion and/or betaine dyes, the dyes constituting the outer dye layer include an anion and cation dyes, and the anion dye is more than the cation dye in terms of an addition amount and/or an adsorption amount.
    Type: Grant
    Filed: July 20, 2004
    Date of Patent: July 3, 2007
    Assignee: Fujifilm Corporation
    Inventors: Tadashi Ikeda, Yasushi Tanabe, Hiroshi Kawakami, Takeshi Suzumoto
  • Patent number: 6979529
    Abstract: A silver halide photographic light-sensitive material is disclosed, comprising a support having thereon at least on light-sensitive halide emulsion layer, wherein the emulsion layer contains a compound represented by formula (1).
    Type: Grant
    Filed: April 26, 2001
    Date of Patent: December 27, 2005
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Takashi Katoh, Hiroo Takizawa
  • Patent number: 6908730
    Abstract: This invention relates to a silver halide photographic material comprising at least one silver halide emulsion comprising silver halide grains having associated therewith: (a) a first dye (Dye 1) that is a cyanine dye capable of spectrally sensitizing a silver halide emulsion and that has at least one anionic substituent; and (b) a second dye (Dye 2) that is not a cyanine dye and that has at least one cationic substituent. Dye 2 has a log P, excluding any counterion, of less than 4.00 and greater than 1.00 or Dye 2 is represented by a dye of formula II as described herein.
    Type: Grant
    Filed: January 17, 2003
    Date of Patent: June 21, 2005
    Assignee: Eastman Kodak Company
    Inventors: Richard L. Parton, Thomas L. Penner, David R. Foster, Stephen A. Hershey
  • Patent number: 6875562
    Abstract: A silver halide photographic emulsion which contains silver halide grains having light absorption strength of 100 or more.
    Type: Grant
    Filed: January 28, 2003
    Date of Patent: April 5, 2005
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Katsuhiro Yamashita, Katsumi Kobayashi
  • Patent number: 6864045
    Abstract: A radiographic silver halide film comprises a cubic grain silver halide emulsion layer on one side of the support and a tabular grain silver halide emulsion layer on the other side. The cubic grain silver halide emulsion layer comprises a combination of first and second spectral sensitizing dyes that provides a combined maximum J-aggregate absorption on the cubic silver halide grains of from about 540 to about 560 nm. The first spectral sensitizing dye is an anionic benzimidazole-benzoxazole carbocyanine, the second spectral sensitizing dye is an anionic oxycarbocyanine. The cubic grain silver halide emulsion layer also includes a mixture of gelatin or a gelatin derivative and a second hydrophilic binder other than gelatin or a gelatin derivative at a weight ratio of first to second hydrophilic binder of from about 2:1 to about 5:1. The cubic silver halide grains comprise from about 1 to about 20 mol % chloride and from about 0.25 to about 1.
    Type: Grant
    Filed: November 19, 2002
    Date of Patent: March 8, 2005
    Assignee: Eastman Kodak Company
    Inventors: Robert E. Dickerson, William E. Moore, David J. Steklenski
  • Patent number: 6838231
    Abstract: A process for producing a spectrally sensitized silver halide photographic emulsion having high sensitivity. A process for producing a silver halide photographic emulsion comprising as a sensitizing dye at least one connection dye having two or more chromophores connected through a covalent bond, the process comprising adding said connection dye to a silver halide photographic emulsion and allowing at least one chromophore out of a plurality of chromophores in the molecule of the connection dye to change in the adsorption strength to a silver halide grain; and a process for producing a silver halide photographic emulsion comprising a silver halide grain having adsorbed on the surface thereof a sensitizing dye in multiple layers, the process comprising adding one or a plural of sensitizing dye(s) to said silver halide emulsion and allowing at least one sensitizing dye out of added sensitizing dyes to change in the adsorption strength to a silver halide grain.
    Type: Grant
    Filed: October 15, 2002
    Date of Patent: January 4, 2005
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Katsumi Kobayashi, Takeshi Suzumoto, Takanori Hioki
  • Patent number: 6811963
    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 ha
    Type: Grant
    Filed: January 17, 2003
    Date of Patent: November 2, 2004
    Assignee: Eastman Kodak Company
    Inventors: Sharon G. Johnston, Stephen P. Singer, Drake M. Michno, James A. Friday, David R. Foster
  • Patent number: 6806043
    Abstract: A silver halide photographic light-sensitive material is disclosed, comprising a support having thereon at least one light-sensitive silver halide emulsion layer, wherein said emulsion layer contains a compound represented by the following formula (1): Dye1&Parenopenst;L1&Parenopenst;Dye2)m1)m2  (1) wherein Dye1 represents a cyanine chromophore, Dye2 represents a merocyanine dye having in the acid nucleus thereof at least one dissociative group having a pKa of 5 or less, and L1 represents a linking group represented by -G1-(A1-G2)t1-(wherein G1 and G2 each independently represents an alkylene, alkenylene or arylene group which may be substituted, A1 represents, irrespective of the direction, —O—, —S—, —SO2—, —NR3—, —COO—, —CONR4— or —SO2NR5— (wherein R3 to R5 each independently represents a hydrogen atom, an alkyl group, an alkenyl group, an aryl group or a heterocyclic group) and t1 represents an integer of 1 to 1
    Type: Grant
    Filed: March 22, 2002
    Date of Patent: October 19, 2004
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Hiroo Takizawa
  • Patent number: 6794121
    Abstract: This invention relates to a method of spectrally sensitizing a silver halide emulsion comprising the following steps in the following order a) providing a silver halide emulsion comprising tabular silver halide grains having an inner dye layer adjacent to the silver halide grain, said dye layer comprising at least one dye (Dye 1) that is capable of spectrally sensitizing silver halide, b) adding to the emulsion at least one dye (Dye 2) capable of providing a second dye layer adjacent to the inner dye layer, and c) adding to the emulsion a non-cationic surfactant or a scavenger for oxidized developer, or a combination of the two, to form a silver halide emulsion comprising silver halide grains having associated therewith two dye layers, wherein the dye layers are held together by non-covalent forces or by in situ bond formation; the outer dye layer adsorbs 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
    Type: Grant
    Filed: January 17, 2003
    Date of Patent: September 21, 2004
    Assignee: Eastman Kodak Company
    Inventors: David R. Foster, Stephen P. Singer, William J. Harrison, Alan R. Pitt
  • Patent number: 6794122
    Abstract: A silver halide photographic material comprising a support having thereon at least one silver halide photographic emulsion layer, wherein the emulsion layer contains at least one compound of formulae (Ia), (Ib) and (Ic) and at least one compound of formula (II): wherein Z1 represents S, O, Se, Te, N or C; R, R31 and R32 each are an alkyl, aryl or heterocyclic group; D is a group necessary for forming a methine dye; V1 to V4 represent H or a monovalent substituent; M and M3 each are a charge-balancing counter ion; m and m3 each are a number or 0 or more necessary for neutralizing the charge of the molecule; Z31 and Z32 each are an atomic group necessary for forming the nitrogen-containing hetero-ring; L31 to L37 each represent a methine group; p31 and p32 each are 0 or 1; n3 is 0, 1, 2, 3 or 4, but the compound of formula (II) does not include the compounds of formulae (Ia), (Ib) and (Ic).
    Type: Grant
    Filed: December 4, 2002
    Date of Patent: September 21, 2004
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Takanori Hioki, Tetsuo Nakamura
  • Patent number: 6794105
    Abstract: A radiographic silver halide film useful for mammography comprises a support having a cubic grain silver halide emulsion on one side. The cubic grains are spectrally sensitized with a combination of first and second spectral sensitizing dyes that provides a combined maximum J-aggregate absorption of from about 540 to about 560 nm. The first spectral sensitizing dye is an anionic benzimidazole-benzoxazole carbocyanine and the second spectral sensitizing dye is an anionic oxycarbocyanine. The first and second spectral sensitizing dyes are present in a molar ratio of from about 0.25:1 to about 4:1.
    Type: Grant
    Filed: May 19, 2003
    Date of Patent: September 21, 2004
    Assignee: Eastman Kodak Company
    Inventors: Anthony Adin, Stephen A. Hershey, Robert E. Dickerson
  • Patent number: 6787297
    Abstract: This invention provides a silver halide photographic element comprising at least one silver halide emulsion comprising silver halide grains which have associated therewith at least an inner dye layer and an outer dye layer wherein the outer dye layer comprises a dye having at least one substituent that has a positive charge, said photographic element further comprising a cyanine dye of formula (I) or (II) (as described in the specification) that is capable of spectrally sensitizing a silver halide emulsion.
    Type: Grant
    Filed: May 12, 2003
    Date of Patent: September 7, 2004
    Assignee: Eastman Kodak Company
    Inventors: Steven G. Link, Richard L. Parton, Robert D. Wilson, Roger A. Bryant, William J. Harrison
  • Publication number: 20040166450
    Abstract: An object of the present invention is to provide a silver halide photographic light-sensitive material which is reduced in the various problems ascribable to the multilayer adsorption of the sensitizing dye. A silver halide photographic emulsion comprising a silver halide grain having adsorbed on the surface thereof a sensitizing dye in multiple layers is described, wherein the variation coefficient of the light absorption strength distribution among the grains is 100% or less.
    Type: Application
    Filed: February 24, 2004
    Publication date: August 26, 2004
    Applicant: FUJI PHOTO FILM CO., LTD.
    Inventors: Katsuhiro Yamashita, Katsumi Kobayashi, Takanori Hioki
  • Patent number: 6780577
    Abstract: A silver halide photographic material containing silver halide grains onto which a sensitizing dye in the first layer and a sensitizing dye or dyes in the second or after layers are multilayer-adsorbed, wherein the fluorescence life time of the dye or dyes in the second or after layers on the silver halide grain surface measured at a maximum wavelength of fluorescence spectrum is shorter than the fluorescence life time of the dye or dyes in a gelatin dry film measured at a maximum wavelength of fluorescence spectrum when the sensitizing dyes are multilayer-adsorbed onto the silver halide grain surface.
    Type: Grant
    Filed: October 9, 2002
    Date of Patent: August 24, 2004
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Hideo Furuuchi
  • Patent number: 6770433
    Abstract: A high-sensitive silver halide photographic light-sensitive material is provided. A silver halide photographic light-sensitive material comprising a dye having a plurality of dye chromophores, which contains at least one dye where at least one of the dye chromophores is a methine dye chromophore containing a basic nucleus comprising a monocyclic heterocyclic ring.
    Type: Grant
    Filed: January 11, 2002
    Date of Patent: August 3, 2004
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Takanori Hioki
  • Patent number: 6762015
    Abstract: A silver halide photographic emulsion which contains at least two sensitizing dyes represented by the following formula (I): Dye-((A)rQ)q(M)m  (I) wherein Dye represents a dye moiety; A represents a linking group; Q represents a dissociable group; r represents 0 or 1; q represents an integer of 2 or more; provided that at least one Q represents —SO3H and at least one Q represents a dissociable group other than —SO3H; M represents a counter ion; and m represents a number of 0 or more necessary to neutralize the electric charge in the molecule, and when 2 represents 2 or more, M's need not be the same.
    Type: Grant
    Filed: May 1, 2001
    Date of Patent: July 13, 2004
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Tetsuo Nakamura, Takanori Hioki
  • Patent number: 6759186
    Abstract: A silver halide photographic material is disclosed, comprising at least one silver halide emulsion layer provided on a support, the emulsion layer comprising a silver halide emulsion containing at least two sensitizing dyes represented by the following general formula (I): wherein X represents an oxygen atom, sulfur atom, selenium atom or NR′; R and R′ each represent a substituted or unsubstituted alkyl, aryl or heterocyclic group; D represents a group required to form a methine dye; M represents a counter ion; and m represents a number of not smaller than 0 required to neutralize the electric charge in the molecule.
    Type: Grant
    Filed: January 30, 2002
    Date of Patent: July 6, 2004
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Tetsuo Nakamura, Kimiyasu Morimura, Takanori Hioki
  • Patent number: 6750002
    Abstract: A process for preparing a concentrated photographic spectral sensitizing dye-water composition which comprises adding an anionic sensitizing dye to an aqueous medium in the substantial absence of organic solvent, and agitating the combined dye and aqueous medium, wherein the anionic dye forms a liquid-crystalline dye phase in the aqueous medium and the agitation is performed in the presence of a nonionic surfactant having an HLB of less than 12 and an aqueous solubility at 25° C. of greater than 10 ppm, which nonionic surfactant is in the aqueous medium at a level of from 10 to 1000 ppm. In a specific embodiment of the invention, where the viscosity (at 0.1 s−1 shear rate) of the dye-water composition in the absence of the nonionic surfactant would be greater than 100 cp and especially where such viscosity would be greater than 500 cp, the surfactant is preferably present at a level sufficient to substantially reduce air entrainment during agitation of the dye-water composition.
    Type: Grant
    Filed: January 28, 2002
    Date of Patent: June 15, 2004
    Assignee: Eastman Kodak Company
    Inventors: James E. Novak, Jeffrey S. Baugher, Dirk J. Hasberg, Lloyd A. Lobo
  • Publication number: 20040096768
    Abstract: A radiographic silver halide film useful for mammography comprises a support having a cubic grain silver halide emulsion on one side. The cubic grains are spectrally sensitized with a combination of first and second spectral sensitizing dyes that provides a combined maximum J-aggregate absorption of from about 540 to about 560 nm. The first spectral sensitizing dye is an anionic benzimidazole-benzoxazole carbocyanine and the second spectral sensitizing dye is an anionic oxycarbocyanine. The first and second spectral sensitizing dyes are present in a molar ratio of from about 0.25:1 to about 4:1.
    Type: Application
    Filed: May 19, 2003
    Publication date: May 20, 2004
    Applicant: Eastman Kodak Company
    Inventors: Anthony Adin, Stephen A. Hershey, Robert E. Dickerson
  • Patent number: 6730468
    Abstract: An object of the present invention is to provide a silver halide photographic light-sensitive material which is reduced in the various problems ascribable to the multilayer adsorption of a sensitizing dye. A silver halide photographic emulsion comprising a silver halide grain having adsorbed on the surface thereof a sensitizing dye in multiple layers is described, wherein the variation coefficient of the light absorption strength distribution among the grains is 100% or less.
    Type: Grant
    Filed: July 7, 2000
    Date of Patent: May 4, 2004
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Katsuhiro Yamashita, Katsumi Kobayashi, Takanori Hioki
  • Patent number: 6699652
    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 ha
    Type: Grant
    Filed: January 17, 2003
    Date of Patent: March 2, 2004
    Assignee: Eastman Kodak Company
    Inventors: Sharon G. Johnston, Stephen P. Singer, Drake M. Michno, James A. Friday, David R. Foster
  • Patent number: 6686116
    Abstract: A blue-sensitive radiographic silver halide film comprises a silver halide emulsion layer comprising predominantly tabular silver halide grains that have an aspect ratio of at least 15, a grain thickness of at least 0.1 &mgr;m, and comprise at least 90 mol % bromide and up to 4 mol % iodide, based on total silver halide. Substantially all of the iodide is present in an internal localized portion of the tabular silver halide grains that excludes the surface of the grains. The tabular silver halide grains are dispersed in a hydrophilic polymeric vehicle mixture comprising at least 0.5% of oxidized gelatin, based on the total dry weight of the polymeric vehicle mixture in the emulsion layer. The tabular silver halide grains are spectrally sensitized using a combination of spectral sensitizing dyes to provide increased speed and reduced dye stain.
    Type: Grant
    Filed: March 26, 2003
    Date of Patent: February 3, 2004
    Assignee: Eastman Kodak Company
    Inventors: Robert E. Dickerson, Anthony Adin, Stephen A. Hershey, Richard F. Davis
  • Patent number: 6686142
    Abstract: A chemically and spectrally-sensitized emulsion has been described, wherein said emulsion comprising (100) cubic silver halide grains with an average edge length of from 0.2 up to 1.5 &mgr;m, has been spectrally sensitized by addition at least three trimethine dyes: a main spectral sensitizer added in an amount of at least 85 mole % of all spectral sensitizers added, followed by adding a second spectral sensitizer in an amount of not more than 10 mole % and a third spectral sensitizer in an amount of at most 1 mole % wherein at least said main spectral sensitizer has two benzoxazole rings in its chemical structure, at least said third spectral sensitizer has two benzimidazole rings in its chemical structure and wherein the said second spectral sensitizer has a structure more sterically hindered than the structure of the other spectral sensitizers. A light-sensitive silver halide photographic film material coated with such emulsion and a radiographic screen/film combination has been described.
    Type: Grant
    Filed: March 4, 2002
    Date of Patent: February 3, 2004
    Assignee: Agfa-Gevaert
    Inventors: Kathy Elst, Paul Callant
  • Patent number: 6649336
    Abstract: A silver halide photographic light-sensitive material is disclosed, including at least one silver halide emulsion layer, wherein the silver halide grain contained in the emulsion layer is silver chloroiodide or silver chloroiodobromide having a silver chloride content of 90 mol % or more and a silver iodide content of 0.01 to 1.0 mol %, at least one hexacyano complex is doped in an amount of at least 1×10−7 mol % based on the total silver amount, and the emulsion layer contains a methine dye represented by the formula (I) as defined.
    Type: Grant
    Filed: September 25, 2001
    Date of Patent: November 18, 2003
    Assignee: Fuji Photo Film Co., LTD
    Inventors: Katsuhisa Ohzeki, Tetsuo Nakamura
  • Patent number: 6632597
    Abstract: A compound represented by the following formula (1) and a silver halide photographic material containing the compound: wherein Dye 1 represents a first chromophore; Dye 2 represents a second chromophore; L1 represents a linking chain; R1 represents a dissociable group having pKa of 5 or less; m1 represents an integer of from 1 to 5; m2 represents an integer of from 1 to 5; and m3 represents an integer of from 1 to 4.
    Type: Grant
    Filed: August 31, 2001
    Date of Patent: October 14, 2003
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Hiroo Takizawa
  • Publication number: 20030190564
    Abstract: A silver halide photographic material comprising a support having thereon at least one silver halide photographic emulsion layer, wherein the emulsion layer contains at least one compound of formulae (Ia), (Ib) and (Ic) and at least one compound of formula (II): 1
    Type: Application
    Filed: December 4, 2002
    Publication date: October 9, 2003
    Applicant: FUJI PHOTO FILM CO., LTD.
    Inventors: Takanori Hioki, Tetsuo Nakamura
  • Patent number: 6620581
    Abstract: This invention comprises a silver halide photographic material comprising at least one silver halide emulsion comprising silver halide grains having associated therewith at least two dyes: (a) a first dye that has at least one anionic substituent and that is capable of spectrally sensitizing a silver halide emulsion; and (b) a second dye that absorbs light at an equal or shorter wavelength than the first dye and that has at least one cationic substituent and that is highly fluorescent.
    Type: Grant
    Filed: October 16, 2000
    Date of Patent: September 16, 2003
    Assignee: Eastman Kodak Company
    Inventors: Richard L. Parton, Joseph C. Deaton, William J. Harrison, Margaret J. Helber
  • Publication number: 20030143499
    Abstract: Spectral sensitizing dyes represented by the following formulas (1) to (4) are disclosed; silver halide photographic materials and thermally developable photosensitive materials containing the dyes are also disclosed.
    Type: Application
    Filed: April 10, 2002
    Publication date: July 31, 2003
    Inventors: Nobuaki Kagawa, Noriyasu Kita, Tatsuo Tanaka, Hiroshi Kashiwagi
  • Patent number: 6582895
    Abstract: A silver halide photographic emulsion which comprises at least one methine compound represented by the following formula (I): wherein X1 and X2 each represents an oxygen atom, a sulfur atom, a selenium atom, or N—R3, wherein R3 represents a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, or a heterocyclic group; V1 and V2 each represents a monovalent substituent; n1 and n2 each represents 0, 1, 2, 3 or 4; L1, L2 and L3 each represents a methine group; l represents an integer of 0 to 3; M represents a counter ion for balancing electric charge; m represents a necessary number for balancing electric charge; and R1 and R2 each represents a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group or a substituted or unsubstituted heterocyclic group, but at least either R1 or R2 represents the alkyl group represented by any of the following formulae: Ra=(Qa)rCO{overscore (N)}SO2Raa Rb=(Qb)sSO2{o
    Type: Grant
    Filed: February 2, 2001
    Date of Patent: June 24, 2003
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Naoyuki Hanaki, Takanori Hioki, Kiyoshi Morimoto
  • Patent number: 6582894
    Abstract: A silver halide photographic emulsion is disclosed, comprising a silver halide grain having a spectral absorption maximum wavelength of less than 500 nm and a light absorption intensity of 60 or more or having a spectral absorption maximum wavelength of 500 nm or more and a light absorption intensity of 100 or more, wherein assuming that a maximum value of the spectral absorption factor of said emulsion by a sensitizing dye is Amax, the distance between the shortest wavelength showing 80% of Amax and the longest wavelength showing 80% of Amax is 20 nm or more and the distance between the shortest wavelength showing 50% of Amax and the longest wavelength showing 50% of Amax is 120 nm or less.
    Type: Grant
    Filed: March 10, 2000
    Date of Patent: June 24, 2003
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Takanori Hioki, Katsuhiro Yamashita, Katsumi Kobayashi, Takashi Katoh
  • Patent number: 6566044
    Abstract: The present invention provides a silver halide photographic material that is excellent in photographic speed as well as image graininess and exhibits low residual color even after rapid processing. The silver halide photographic material contains a compound represented by formula (I) and a compound represented by formula (II), as defined.
    Type: Grant
    Filed: March 26, 2001
    Date of Patent: May 20, 2003
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Katsuhisa Ohzeki, Tetsuo Nakamura, Takanori Hioki
  • Patent number: 6562557
    Abstract: A color photographic material comprising a transparent support, at least one blue-sensitive, predominantly yellow-coupling silver halide emulsion layer, at least one green-sensitive, predominantly magenta-coupling silver halide emulsion layer (PP-1) and at least one red-sensitive, predominantly cyan-coupling silver halide emulsion layer (BG-1), characterised in that the spectral sensitivity distribution of BG-1 is characterised in that 605≦&lgr;max≦630 nm, 0.1≦&Dgr;lgE640≦0.6 and 1.
    Type: Grant
    Filed: July 19, 2001
    Date of Patent: May 13, 2003
    Assignee: Agfa-Gevaert
    Inventors: Klaus Wagner, Heinz Schütz, Peter Bell, Lothar Endres, Detlev Kapitza, Thomas Stetzer
  • Patent number: 6558893
    Abstract: This invention comprises a silver halide photographic material comprising at least one silver halide emulsion comprising silver halide grains having associated therewith a combination of two or more dyes comprising: (a) a first dye which is a cyanine dye of formula Ia and has a net charge of zero or −1  wherein the substituents are as defined in the specification; (b) a second dye which has at least one substituent that has a positive charge, and is a cyanine dye a merocyanine dye, arylidene dye, complex cyanine dye, complex merocyanine dye, homopolar cyanine dye, hemicyanine dye, styryl dye, hemioxonol dye, oxonol dye, anthraquinone dye, triphenylmethane dye, azo dye type, azomethines, or a coumarin dye, with the proviso that if the second dye is a cyanine dye, it is of formula IIa:  wherein the substituents are as defined in the specification; and wherein (c) the wavelength of maximum light absorption, in nanometers (nm), of the first dye and the wavele
    Type: Grant
    Filed: November 17, 2000
    Date of Patent: May 6, 2003
    Assignee: Eastman Kodak Company
    Inventors: Richard L. Parton, Andrei Andrievsky, Thomas L. Penner, William J. Harrison
  • Patent number: 6537742
    Abstract: A silver halide photographic emulsion which contains silver halide grains having light absorption strength of 100 or more.
    Type: Grant
    Filed: November 14, 2001
    Date of Patent: March 25, 2003
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Katsuhiro Yamashita, Katsumi Kobayashi
  • Patent number: 6521401
    Abstract: A silver halide photographic emulsion which contains silver halide grains having a spectral absorption maximum wavelength of less than 500 nm and a light absorption strength of 60 or more, or a spectral absorption maximum wavelength of 500 nm or more and a light absorption strength of 100 or more, wherein at least one of the sensitizing dyes which are used for spectrally sensitizing the emulsion does not have an electric charge in the molecule at all, or forms an inner salt and the molecule does not have an electric charge as a whole and has at least one aromatic ring in the molecule.
    Type: Grant
    Filed: August 3, 2000
    Date of Patent: February 18, 2003
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Katsuhiro Yamashita, Katsumi Kobayashi
  • Patent number: 6509144
    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: X—Y′. or an electron donor which contains an —XY′ moiety; wherein X is an electron donor moiety, Y′ is a leaving proton H or a leaving group Y, with the proviso that if Y′ is H a base, &bgr;−, is covalently linked directly or indirectly to X. and wherein: 1) X—Y′ has an oxidation potential between 0 and about 1.
    Type: Grant
    Filed: January 25, 1999
    Date of Patent: January 21, 2003
    Assignee: Eastman Kodak Company
    Inventors: Kenneth J. Reed, Joseph P. Pepe, James A. Friday, Jon N. Eikenberry, Yun C. Chang, Annabel A. Muenter, Jerome R. Lenhard
  • Publication number: 20020192607
    Abstract: A chemically and spectrally-sensitized emulsion has been described, wherein said emulsion comprising (100) cubic silver halide grains with an average edge length of from 0.2 up to 1.5 &mgr;m, has been spectrally sensitized by addition at least three trimethine dyes: a main spectral sensitizer added in an amount of at least 85 mole % of all spectral sensitizers added, followed by adding a second spectral sensitizer in an amount of not more than 10 mole % and a third spectral sensitizer in an amount of at most 1 mole % wherein at least said main spectral sensitizer has two benzoxazole rings in its chemical structure, at least said third spectral sensitizer has two benzimidazole rings in its chemical structure and wherein the said second spectral sensitizer has a structure more sterically hindered than the structure of the other spectral sensitizers. A light-sensitive silver halide photographic film material coated with such emulsion and a radiographic screen/film combination has been described.
    Type: Application
    Filed: March 4, 2002
    Publication date: December 19, 2002
    Inventors: Kathy Elst, Paul Callant
  • Publication number: 20020168599
    Abstract: A silver halide photographic material is disclosed, comprising at least one silver halide emulsion layer provided on a support, the emulsion layer comprising a silver halide emulsion containing at least two sensitizing dyes represented by the following general formula (I): 1
    Type: Application
    Filed: January 30, 2002
    Publication date: November 14, 2002
    Inventors: Tetsuo Nakamura, Kimiyasu Morimura, Takanori Hioki
  • Publication number: 20020155400
    Abstract: A compound represented by the following formula (1) and a silver halide photographic material containing the compound: 1
    Type: Application
    Filed: August 31, 2001
    Publication date: October 24, 2002
    Applicant: FUJI PHOTO FILM CO., LTD.
    Inventor: Hiroo Takizawa
  • Publication number: 20020150848
    Abstract: A silver halide photographic emulsion which contains silver halide grains having light absorption strength of 100 or more.
    Type: Application
    Filed: November 14, 2001
    Publication date: October 17, 2002
    Applicant: FUJI PHOTO FILM CO., LTD.
    Inventors: Katsuhiro Yamashita, Katsumi Kobayashi
  • Publication number: 20020127503
    Abstract: A radiographic silver halide film material and a radiographic screen/film combination has been disclosed, said material having in at least one light-sensitive layer thereof an emulsion comprising {111} tabular silver halide grains rich in silver bromide, spectrally sensitive to irradiation in the wavelength range between 540 and 555 nm by the presence of a combination of at least one J-aggregating spectrally sensitizing cyanine dye according to the formula (I) and of at least one additional cyanine dye providing a shift of maximum absorption wavelength of said combination of less than 10 nm versus in the absence thereof, wherein said additional cyanine dye is at least one monomethine cyanine dye according to the formula (II), essentially having a solubilizing group or a latent solubilizing group, said dyes having been given in the description and in the claims of the present invention.
    Type: Application
    Filed: November 28, 2001
    Publication date: September 12, 2002
    Inventors: Kathy Elst, Paul Callant, Ilse Mans
  • Publication number: 20020110764
    Abstract: The present invention provides a silver halide photographic material that is excellent in photographic speed as well as image graininess and exhibits low residual color even after rapid processing. The silver halide photographic material contains a compound represented by formula (I) and a compound represented by formula (II), as defined.
    Type: Application
    Filed: March 26, 2001
    Publication date: August 15, 2002
    Inventors: Katsuhisa Ohzeki, Tetsuo Nakamura, Takanori Hioki
  • Publication number: 20020106593
    Abstract: Spectral sensitizing dyes represented by the following formulas (1) to (4) are disclosed; silver halide photographic materials and thermally developable photosensitive materials containing the dyes are also disclosed.
    Type: Application
    Filed: February 28, 2000
    Publication date: August 8, 2002
    Inventors: Nobuaki Kagawa, Noriyasu Kita, Tatsuo Tanaka, Hiroshi Kashiwagi
  • Publication number: 20020086250
    Abstract: A silver halide photographic light-sensitive material is disclosed, comprising a support having thereon at least on light-sensitive halide emulsion layer, wherein the emulsion layer contains a compound represented by formula (1).
    Type: Application
    Filed: April 26, 2001
    Publication date: July 4, 2002
    Inventors: Takashi Katoh, Hiroo Takizawa
  • Publication number: 20020076661
    Abstract: The present invention provides a system of a digital color proof in which consistent images are obtained while minimizing density variation in spite of various variations of conditions due to the use of a silver halide light-sensitive color material, specifically, the present invention provides a method for forming proof images similar to printed images in terms of various characteristics such as the paper quality of silver halide light-sensitive materials, the dot gain, and the density.
    Type: Application
    Filed: September 20, 2001
    Publication date: June 20, 2002
    Applicant: KONICA CORPORATION
    Inventors: Tomonori Kawamura, Shigeo Tanaka, Satoshi Nishino, Hirohide Ito, Naohito Naraoka, Naoyo Suzuki, Shinya Watanabe, Masataka Takimoto, Hideaki Sakata, Junichi Tanabe, Tetsuya Taniguchi, Naoki Nozaki, Yasushi Okubo, Koji Daifuku, Katsuji Kondo, Toshitsugu Suzuki
  • Patent number: 6387610
    Abstract: A silver halide photographic emulsion which contains silver halide grains having light absorption strength of 100 or more.
    Type: Grant
    Filed: December 20, 2000
    Date of Patent: May 14, 2002
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Katsuhiro Yamashita, Katsumi Kobayashi