Patents Examined by Geraldine Letscher
  • Patent number: 6607876
    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: Grant
    Filed: November 28, 2001
    Date of Patent: August 19, 2003
    Assignee: Agfa-Gevaert
    Inventors: Kathy Elst, Paul Callant, Ilse Mans
  • Patent number: 6593074
    Abstract: A silver halide photographic emulsion is disclosed, which comprises at least one dye or sensitizing dye having at least one organic counter ion; and also a silver halide photographic emulsion layer containing the above dye or sensitizing dye and a method of producing the above silver halide photographic emulsion are disclosed.
    Type: Grant
    Filed: June 26, 2001
    Date of Patent: July 15, 2003
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Takanori Hioki, Noboru Hikichi
  • Patent number: 6593075
    Abstract: A silver halide photographic light-sensitive material having at least one emulsion layer comprising silver halide grains, with the emulsion layer further comprising at least one compound represented by the following formula (I) and at least one compound represented by the following formula (II), (III), (IV-1), (IV-2), (V-1), (V-2), (V-3) or (VI): (X&Parenclosest;1&Parenopenst;L&Parenclosest;m&Parenopenst;A—B)n  (I)  (Het&Parenclosest;k1&Brketopenst;&Parenopenst;Q1&Parenclosest;k2&Parenopenst;Hy)]k3  (III) wherein the substituents as defined herein the specification.
    Type: Grant
    Filed: July 24, 2000
    Date of Patent: July 15, 2003
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Shinichi Ichikawa, Takeshi Suzumoto, Kohzaburoh Yamada, Tadashi Inaba
  • Patent number: 6593072
    Abstract: A process of sensitizing a tabular grain emulsion containing the steps of (i) providing a tabular grain host emulsion comprised of a dispersing medium and silver halide grains including tabular grains having {111} major faces and an aspect ratio of at least 2, which contain greater than 50 mole percent bromide, based on silver, and which account for greater than 50 percent of total grain projected area; (ii) adding a thiosulfonate compound of the following Formula I at the surface of the tabular grains of the host emulsion: Z1SO2SZ2  (I) where Z1 represents is a substituted or unsubsituted aliphatic, aromatic, or heterocyclic group, and Z2 represents a substituted or unsubsituted aliphatic, aromatic, or heterocyclic group, or a monovalent metal or organic cation, where Z1 and Z2 may combine together to form a ring structure or either of Z1 or Z2 may comprise a polymeric backbone wherein the thiosulfonate group may be repeated; and (iii) adding silver and halide ions, where the halide
    Type: Grant
    Filed: December 21, 2001
    Date of Patent: July 15, 2003
    Assignee: Eastman Kodak Company
    Inventor: Tommie L. Royster, Jr.
  • Patent number: 6593071
    Abstract: A silver halide emulsion is disclosed, comprising tabular grains having dislocation lines in the fringe portion, the tabular grains comprising a silver halide phase (V3) having a maximum iodide content, a silver halide phase (V6), internal to V3, having an average iodide content of A6 mol %, and a silver halide phase (V7), external to V3, having an average iodide content of A7 mol %, and 0≦A6/A7≦1.0; and wherein the dislocation line forming region comprises a shell accounting for 10 to 50% by volume of the grain and having an average iodide content of 4 to 20 mol %; the shell comprising an outermost sub-shell accounting for to 15% by volume of the grain and having an average iodide content of 0 to 3 mol %.
    Type: Grant
    Filed: September 14, 2001
    Date of Patent: July 15, 2003
    Assignee: Konica Corporation
    Inventors: Toshiya Kondo, Tadahiro Nagasawa, Kuniaki Uezawa
  • 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: 6579670
    Abstract: The present invention provides a silver halide photographic light-sensitive material comprising a support having thereon at least one silver halide emulsion layer, wherein the silver halide emulsion contained in the silver halide emulsion layer comprises silver halide grains having a silver chloride content of 90 mol % or more, and the silver halide emulsion further contains a metal complex having H2O as a ligand. It also provides a silver halide photographic light-sensitive material comprising a support having thereon at least one silver halide emulsion layer, wherein the silver halide emulsion contained in the silver halide emulsion layer contains a metal complex having O2− as a ligand.
    Type: Grant
    Filed: June 13, 2001
    Date of Patent: June 17, 2003
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Tomonori Owaki, Tadanobu Sato, Takahiro Matsuno
  • Patent number: 6576412
    Abstract: A hydrophilic colloid composition having hydrophobic material dispersed therein and comprising an anionic surface active agent further comprises a cationic surface active agent in an amount sufficient to reduce the viscosity of the composition, the cationic surface active agent comprising a hydrophobic moiety, a non-ionic hydrophilic moiety and a cationic hydrophilic moiety.
    Type: Grant
    Filed: June 14, 2001
    Date of Patent: June 10, 2003
    Assignee: Eastman Kodak Company
    Inventors: Alan R. Pitt, David D. Miller, Andrew Howe
  • Patent number: 6569612
    Abstract: A color photographic element is disclosed comprising at least three light-sensitive units which have their individual sensitivities in different wavelength regions, comprising at least one imaging layer comprising a light-sensitive silver-halide emulsion, binder, and a yellow coupler represented by the following structure: Wherein COUP is a photographic coupler residue capable of coupling with oxidized color developer to form a first yellow dye L is a linking group selected from the group consisting of —OC(═O)—, —OC(═S)—, —SC(═O)—, and —SC(═S)—, and —DYE is a releasable second yellow dye or yellow dye precursor, wherein COUP is an acetanilide compound that contains one or more electron-withdrawing groups such that the pKa at the coupling site is less than 8.7. Such yellow couplers improve activity and enhance dye densities.
    Type: Grant
    Filed: August 30, 2001
    Date of Patent: May 27, 2003
    Assignee: Eastman Kodak Company
    Inventors: Lelia Cosimbescu, Jared B. Mooberry, David T. Southby, Louis E. Friedrich
  • Patent number: 6566034
    Abstract: A high contrast photographic material is disclosed containing a new type of hydrazine compound characterized in that said hydrazine compound comprises a redox moiety capable of developing an exposed silver halide crystal. Preferably the photographic material is a graphic arts material for pre-press applications. The developed photographic material shows high gradation, and excellent dot quality and exposure latitude.
    Type: Grant
    Filed: September 7, 2001
    Date of Patent: May 20, 2003
    Assignee: AGFA-Gevaert
    Inventors: Johan Loccufier, Stefaan Lingier
  • 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: 6562558
    Abstract: Disclosed is a photographic element comprising a light-sensitive silver halide emulsion layer having associated therewith a cyan “NB coupler” having the formula (I): wherein: the term “NB coupler” represents a coupler of formula (I) that forms a dye for which the left bandwidth (LBW) using spin-coating is at least 5 nm less than that of the same dye in solution form; X is selected from O, NR* or S and R* is an alkyl, carbocyclic or heterocyclic group; L is a linking group and a is 0 or 1; Y is H or a coupling-off group; Z* is a substituent group and p is 0 to 2; and R1 and R2 are independently selected H or substituents; provided that the combined sum of the aliphatic carbon atoms in R1, R2, R*, L and all Z* is at least 8.
    Type: Grant
    Filed: December 6, 2001
    Date of Patent: May 13, 2003
    Assignee: Eastman Kodak Company
    Inventors: William J. Begley, Gary M. Russo
  • Patent number: 6562556
    Abstract: A silver halide color photographic light-sensitive material, which has at least one blue-sensitive silver halide emulsion layer containing a yellow coupler, at least one green-sensitive silver halide emulsion layer containing a magenta coupler, and at least one red-sensitive silver halide emulsion layer containing a cyan coupler, provided on a support, wherein at least one layer of said light-sensitive silver halide emulsion layers contains a silver halide emulsion comprising silver halide grains having a silver chloride content of 95 mol % or more, and wherein, with respect to each of characteristic curves obtained by a color development of said light-sensitive material after exposure, a specific relationship as defined by the density and the exposure amount is satisfied.
    Type: Grant
    Filed: December 28, 2000
    Date of Patent: May 13, 2003
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Akito Yokozawa
  • Patent number: 6558886
    Abstract: Disclosed is a silver halide direct view multicolor photographic element comprising a green record containing a green light sensitized silver halide emulsion and comprising either (a) a magenta dye-forming coupler and a cyan dye-forming coupler in an amount of at least 0.1 mole % of the couplers present in the green record, or (b) a green record having a coupler or couplers sufficient to provide upon development a Status A red density greater than 0.23 as measured using a green light separation exposure at a Status A green density of 1.0.
    Type: Grant
    Filed: January 18, 2002
    Date of Patent: May 6, 2003
    Assignee: Eastman Kodak Company
    Inventors: Walter H. Isaac, Jess B. Hendricks, Vincent J. Flow, Patrick W. Webber, Glenn M. Brown, Cynthia A Fitzgerald, Carolyn R. Ellinger
  • Patent number: 6558887
    Abstract: A color photographic silver halide material containing in at least one red-sensitive layer a cyan coupler having formula (I) and in a photosensitive or non-photosensitive layer a UV absorber having formula (II) where R1 to R4, R11 to R16, Z, m, n and o have the meanings specified in the description, is characterised by good light and dark stability and low secondary densities.
    Type: Grant
    Filed: January 8, 2002
    Date of Patent: May 6, 2003
    Assignee: Agfa-Gevaert
    Inventors: Günter Helling, Ralf Weimann
  • Patent number: 6558891
    Abstract: A silver halide emulsion is disclosed, comprising tabular silver halide grains having an average iodide content of 3 to 15 mol % and comprising silver halide phases differing in halide composition, at least 50% of the total projected area of the tabular silver halide grains being accounted for by grains having an aspect ratio of not less than 12, wherein the first silver halide phase (A) has an average iodide content of not more than 3 mol % and accounting for 50 to 85% of total silver, the second phase (B) locating outside the phase (A), having an average iodide content of 8 to 25 mol % and accounting for 10 to 35% of total silver, and the third outermost phase having an average iodide content of not more than 4 mol % 0.5 to 15% of total silver.
    Type: Grant
    Filed: September 6, 2001
    Date of Patent: May 6, 2003
    Assignee: Konica Corporation
    Inventors: Hiroshi Takada, Katsuhiko Heki
  • Patent number: 6558885
    Abstract: Disclosed is a silver halide color photographic light-sensitive material that comprises at least one magenta emulsion layer containing at least one specific pyrazolotriazole magenta dye-forming coupler, in which a silver halide emulsion in the magenta emulsion layer containing the magenta dye-forming coupler comprises a high silver chloride emulsion whose silver chloride content is 98 mol % or more, at least one light-insensitive hydrophilic colloidal layer contains a solid fine-particle dispersion of a dye that has 1 to 7 dissociable hydrogen or group having a dissociable hydrogen, and the magenta emulsion layer containing the magenta dye-forming coupler is a light-sensitive silver halide emulsion layer most apart from the light-insensitive hydrophilic colloidal layer containing the solid fine-particle dispersion of the dye, among all the light-sensitive silver halide emulsion layers.
    Type: Grant
    Filed: November 27, 2000
    Date of Patent: May 6, 2003
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Hidekazu Sakai, Tatsuya Ishizaka, Katsuyuki Takada
  • Patent number: 6555306
    Abstract: Photographic elements are disclosed comprising a silver halide emulsion layer having associated therewith a dye forming coupler and a compound of the following Formula I: wherein n=0-6 and each R is independently hydrogen, an aromatic, cyclic, linear or branched chain hydrocarbon group, NR′R″, or OR′; where R′ is an aromatic, cyclic, linear or branched chain hydrocarbon group and R″ is hydrogen or an aromatic, cyclic, linear or branched chain hydrocarbon group. Photographic elements of the present invention upon exposure and photographic processing exhibit good activity and yield dye images that have unexpected and substantial improvements in the stability of the formed image dyes.
    Type: Grant
    Filed: December 21, 2001
    Date of Patent: April 29, 2003
    Assignee: Eastman Kodak Company
    Inventors: J. Ramon Vargas, Gary M. Russo
  • Patent number: 6555304
    Abstract: Disclosed is a silver halide direct view multicolor photographic element comprising a red record containing (1) a red light sensitized silver halide emulsion, (2) a cyan dye-forming NB first coupler, and (3) a second coupler selected from (a) a magenta dye forming coupler in an amount of 2-30 mole % of the total coupler in the red record and (b) a cyan dye-forming coupler having a greater absorption in the green spectra than the first coupler in an amount sufficient to provide a Status A green density in the range of 0.27 to 0.40 using a red light separation exposure at a Status A red density of 1.0. Such an element exhibits improved flesh tone reproduction and good dye dark stability.
    Type: Grant
    Filed: January 18, 2002
    Date of Patent: April 29, 2003
    Assignee: Eastman Kodak Company
    Inventors: Walter H. Isaac, Vincent J. Flow, James S. Honan, Jeffrey C. Smitley, Patrick W. Webber, Glenn M. Brown, Cynthia A. Fitzgerald, Jess B. Hendricks, Thomas A. Rosiek, John H. Harder, Carolyn H. Ellinger
  • Patent number: 6555305
    Abstract: A photographic element is disclosed comprising a silver halide emulsion layer including a spectrally sensitized tabular grain emulsion and having associated therewith a compound of the following Formula I: wherein n=0-6 and each R is independently hydrogen, an aromatic, cyclic, linear or branched chain hydrocarbon group, NR′R″, or OR′; where R′ is an aromatic, cyclic, linear or branched chain hydrocarbon group and R″ is hydrogen or an aromatic, cyclic, linear or branched chain hydrocarbon group. The use of dipiperidinediamide, dipiperidinedicarbamate or dipiperidinediurea compounds of Formula I in photographic elements comprising spectrally sensitized tabular grain silver halide emulsions exhibit reduced sensitizing dye stain after photographic processing.
    Type: Grant
    Filed: December 21, 2001
    Date of Patent: April 29, 2003
    Assignee: Eastman Kodak Company
    Inventors: J. Ramon Vargas, Margaret D. Steele