Organic Metal Compound Patents (Class 430/612)
  • Patent number: 7169544
    Abstract: Black-and-white, dry processable thermally developable materials have increased stability after imaging with the incorporation of at least 0.0001 mol/m2 of a thermal solvent having one or more >N—C(?O)— groups. Such thermally developable materials include both thermographic and photothermographic materials.
    Type: Grant
    Filed: April 21, 2005
    Date of Patent: January 30, 2007
    Assignee: Eastman Kodak Company
    Inventors: Kui Chen-Ho, William D. Ramsden, Chaofeng Zou, Doreen C. Lynch, James B. Philip, Jr., Karissa L. Eckert, George J. Burgmaier
  • Patent number: 7083907
    Abstract: A silver halide emulsion which exhibits high sensitivity, high contrast, little sensitivity variation with humidity conditions at the time of exposure, and excellent reciprocity law properties at high illumination intensities. Also, a method of preparing the emulsion in a stable manner, and a silver halide color photographic photosensitive material and an image forming method that use the emulsion. The emulsion includes a mesoionic compound having a thiolate structure or a protonated thiolate structure, and the emulsion is sensitized by an Au (III) compound. The emulsion preferably contains an oxidatively dimerized form of a mesoionic compound having a thiolate structure, and a silver chloride content of at least 90 mol %.
    Type: Grant
    Filed: December 18, 2003
    Date of Patent: August 1, 2006
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Hirotomo Sasaki, Hideki Maeta, Naoto Ohshima
  • Patent number: 6686143
    Abstract: This invention relates to a photographic element comprising a support and a silver halide emulsion layer, the emulsion layer comprising a water soluble Au(I) complex having the formula [L—Au—L]n−M+n wherein the complex is symmetrical; L is an organothiosulfonato ligand which is an antifogging, stabilizing, or sensitizing compound, n is 1 to 4, and M is a cationic counterion. This invention further relates to a silver halide photographic element comprising a support and a silver halide emulsion layer, the emulsion layer comprising an organothiosulfonato Au(I) complex having the formula [A—SO2S—Au—SSO2—A]n−M+n wherein M is a cationic counterion; A is a substituted or unsubstituted organic group; and n is 1 to 4; and wherein the compound is symmetrical. It further relates to a method of preparing a silver halide emulsion utilizing said organothiosulfonato Au(I) complexes.
    Type: Grant
    Filed: August 7, 2002
    Date of Patent: February 3, 2004
    Assignee: Eastman Kodak Company
    Inventors: Roger Lok, Brian P. Cleary, Alton L. Chitty, Weimar W. White
  • Publication number: 20040002025
    Abstract: Provided are a silver halide photographic emulsion containing a metal complex represented by the following formula (I):
    Type: Application
    Filed: August 27, 2002
    Publication date: January 1, 2004
    Applicant: FUJI PHOTO FILM CO., LTD.
    Inventors: Tadashi Inaba, Takahiro Matsuno, Tadanobu Sato
  • Publication number: 20030224303
    Abstract: A process of producing a solid dispersion of an organic compound comprising a step in which after solid dispersing an organic compound, a temperature is elevated stepwise to subject the dispersion to heat treatment.
    Type: Application
    Filed: May 7, 2003
    Publication date: December 4, 2003
    Applicant: FUJI PHOTO FILM CO., LTD.
    Inventor: Satoru Toda
  • Patent number: 6620577
    Abstract: Photothermographic imaging materials having increased photospeed are provided by certain selenium chemical sensitizers that are added during the formulation of a photothermographic emulsion. These selenium chemical sensitizers can be used alone or in combination with other sulfur, tellurium, or gold chemical sensitizers as well as with oxidatively decomposed sulfur-containing compounds.
    Type: Grant
    Filed: February 25, 2002
    Date of Patent: September 16, 2003
    Assignee: Eastman Kodak Company
    Inventors: Doreen C. Lynch, Andrea L. Opatz, Henry J. Gysling, Sharon M. Simpson
  • Patent number: 6610467
    Abstract: There is disclosed a silver halide photographic emulsion comprising silver halide grains, wherein 50% or more of the projected area of the silver halide grains to be contained is occupied by tabular grains having an aspect ratio of 2 or more and a grain thickness of 0.2 &mgr;m or less, with the tabular grains each having a phase with the content of silver bromide being 10% or more, and wherein in the phase, the tabular grains each contain a metal complex dopant in an amount necessary to increase the density of a dislocation. This emulsion produces high contrast and better granularity while it has high sensitivity. Further, there is also disclosed a silver halide photographic emulsion, wherein the average equivalent-circle diameter of the total tabular grains among the silver halide grains contained is 2.0 to 4.0 &mgr;m, and the tabular grains contain at least one metal complex having, as a ligand, a heterocyclic compound in a number more than half of the coordination number of the metal atom.
    Type: Grant
    Filed: September 17, 2001
    Date of Patent: August 26, 2003
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Masahiro Asami, Makoto Kikuchi, Tadanobu Sato
  • Patent number: 6495299
    Abstract: This invention relates to packaged photographic film that is capable of being alternately processed, according to individual consumer choice, by either (1) a traditional wet-chemistry process with a developer solution followed by desilvering in one or more subsequent solutions to obtain a color negative film, or (2) a dry thermal process without the use of aqueous solutions in which a blocked developing agent located within the photographic element is thermally activated or unblocked, optionally followed by electronic scanning of the developed film without desilvering. This invention enables a single film stock to be developed in both a conventional deep tank process and in a dry thermal process.
    Type: Grant
    Filed: May 25, 2001
    Date of Patent: December 17, 2002
    Assignee: Eastman Kodak Company
    Inventors: David H. Levy, James H. Reynolds, David T. Southby, Paul D. Zimmerman, Mark E. Irving
  • Patent number: 6458505
    Abstract: A photothermographic material having, on a support, an image-forming layer that contains at least a non-photosensitive silver salt of an organic acid, a photosensitive silver halide, a nucleating agent and a binder, and at least one protective layer outer than the image-forming layer on the support, wherein the protective layer contains at least one compound selected from the group consisting of the compounds represented by the following formula (1) and the compounds represented by the following formula (2) as emulsion dispersion or solid dispersion: C—(Y)n—CZ1Z2X  Formula (1) wherein, in the formula (1), Q represents an alkyl group, an aryl group or a heterocyclic group, which groups may have one or more substituents, Y represents a divalent bridging group, n represents 0 or 1, Z1 and Z2 represents a halogen atom, and X represents hydrogen atom or an electron-withdrawing group, wherein, in the formula (2), M represents hydrogen atom or a k-valent cation; k represents
    Type: Grant
    Filed: March 22, 2001
    Date of Patent: October 1, 2002
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Tadashi Ito
  • Patent number: 6197485
    Abstract: A photographic assemblage comprising a silver halide photographic light-sensitive element comprising at least one sulfur and gold sensitized silver halide emulsion layer, said element comprising chlorinated s-triazine hardeners and photographically useful chemical compounds containing cyano groups, and a closed vessel in which the element is closed and stored at a constant relative humidity, is protected against HCN gas, which may evolve from photographic addenda included in the light-sensitive element to cause fog in the silver halide emulsion layers, by the addition of a palladium compound, in a silver halide emulsion layer and/or an adjacent layer thereto, as scavenger for HCN gas released from the element.
    Type: Grant
    Filed: September 27, 1993
    Date of Patent: March 6, 2001
    Assignee: Minnesota Mining & Manufacturing Company
    Inventors: Luigi Cellone, Brunella Fornasari, Giovanni Giusto
  • Patent number: 6066444
    Abstract: A silver halide light sensitive photographic material is disclosed, comprising a support having thereon one or plural photographic component layers, wherein at least a photographic component layer contains a lanthanoid triflate compound represented by the following formula:Ln--(CF.sub.3 SO.sub.3).sub.3where Ln represents a rare earth element.
    Type: Grant
    Filed: June 9, 1999
    Date of Patent: May 23, 2000
    Assignee: Konica Corporation
    Inventor: Akio Fujita
  • Patent number: 6040129
    Abstract: A photographic emulsion comprising dispersed in a binder sensitized silver halide grains wherein the emulsion is sensitized from an organometallic compound of formula:(R).sub.n (X).sub.m M (I)wherein M is a metal selected from the group consisting of lead, tin, boron, bismuth and thallium, each R is independently an alkyl group, a cycloalkyl group, an aryl group, a heterocyclic group, an alkenyl group or a alkynyl group, each X is independently halogen, hydroxy, or alkoxy, n is 1 to 4 and m is 0 to 3, with the proviso that when M is lead or tin, n is 1 to 4 and m+n is 4, when M is boron or bismuth, n is 1 to 3 and m+n is 3 and when M is thallium, either n is 1 and m is 0, or n is 1 to 3 and n+m is 3.
    Type: Grant
    Filed: April 9, 1999
    Date of Patent: March 21, 2000
    Assignee: Eastman Kodak Company
    Inventors: Stephen A. Godleski, David A. Dickinson, Antony J. Williams
  • Patent number: 5928852
    Abstract: A silver halide photographic emulsion is disclosed, comprising a support having thereon at least one silver halide emulsion layer, wherein the silver halide grain contained in the silver halide emulsion layer has a silver chloride content of 50 mol % or more, 30% or more of the surface area of the grain comprises a (111) face, and the silver halide grain is formed in the presence of at least one compound represented by formula (I) and contains a hexacyano complex represented by formula (II) such that the outermost layer of the grain has a hexacyano complex concentration of at least 1.times.10.sup.-4 mol/mol-Ag.
    Type: Grant
    Filed: October 10, 1996
    Date of Patent: July 27, 1999
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Katsuhisa Ohzeki
  • Patent number: 5888717
    Abstract: A photosensitive silver halide emulsion which is ripened with at least one compound of the formula (I)R.sub.1 --X--R.sub.2 (I)in whichR.sub.1 and R.sub.2 mutually independently mean groups which are linked to X via an element from periods 3 to 6 of main group 4 or 5 or via an element from sub-groups 4 to 8 of the periodic system of elements, wherein R.sub.1 and R.sub.2 may be attached together via a linking member and wherein the bonds R.sub.1 --X and R.sub.2 --X may mutually independently be single or double bonds, andX means Se or Te,is distinguished by elevated sensitivity, low grain and low fog.
    Type: Grant
    Filed: November 14, 1997
    Date of Patent: March 30, 1999
    Assignee: Agfa-Gevaert AG
    Inventors: Peter Bergthaller, Hans-Ulrich Borst, Jorg Siegel
  • Patent number: 5830631
    Abstract: The invention relates to a photographic emulsion comprising silver iodochloride grains, said grains further comprising osmium and ruthenium, said grains chemically sensitized with gold in an amount of between 0.1 and 120 mg gold per silver mole and sulfur in an amount between 0.1 and 20 mg sulfur per silver mole and a disulfide compound represented by the following formula: ##STR1## wherein X is independently --O--, --NH-- or --NR--, where R is a substituent;m and r are independently 0, 1 or 2;M is --H or a cationic species;Ar is an aromatic group; andL is a linking group, where p is 0 or 1.
    Type: Grant
    Filed: October 11, 1996
    Date of Patent: November 3, 1998
    Assignee: Eastman Kodak Company
    Inventors: Jess B. Hendricks, Jerzy A. Budz, Paul T. Hahm
  • Patent number: 5759758
    Abstract: A silver halide photographic material comprising a support having provided thereon at least one silver halide emulsion layer, wherein the silver halide emulsion comprises silver halide grains having a silver chloride content of 50 mol % or more, and the silver halide grain contains a cyanochromium complex ion represented by the following formula (I) and at least one complex of a metal selected from rhodium, ruthenium, osmium, rhenium and iron:?Cr(CN).sub.6-n L.sub.n !.sup.m- (I)wherein L represents H.sub.2 O or OH; n represents 0 or 1; and m represents 3 or 4.
    Type: Grant
    Filed: April 10, 1996
    Date of Patent: June 2, 1998
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Kazuki Yamazaki, Shoji Yasuda
  • Patent number: 5667958
    Abstract: A silver halide photographic material having high sensitivity, reduced in fog and excellent in storage stability is described, which comprises a support having thereon at least one constituent layer containing at least one hydrazone compound having a methine dye residue or an adsorbing group to silver halide through a covalent bond or containing at least one metallocene compound having a methine dye residue through a covalent bond.
    Type: Grant
    Filed: July 8, 1996
    Date of Patent: September 16, 1997
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Takanori Hioki, Tadashi Ikeda
  • Patent number: 5650265
    Abstract: Palladium compounds are incorporated into a relatively low speed photographic print element. One embodiment of the invention comprises a silver halide light sensitive photographic print element comprising a support bearing at least one silver halide emulsion image forming layer, an antistatic layer containing vanadium pentoxide, and a palladium compound. In a preferred embodiment, the silver halide light sensitive photographic print element of the invention comprises a support bearing on one side thereof at least one blue-sensitive silver halide emulsion yellow-image forming layer, at least one red-sensitive silver halide emulsion cyan-image forming layer, and at least one green-sensitive silver halide emulsion magenta-image forming layer; an antistatic layer containing vanadium pentoxide; and a palladium compound.
    Type: Grant
    Filed: December 22, 1995
    Date of Patent: July 22, 1997
    Assignee: Eastman Kodak Company
    Inventors: Henry Joseph Sniadoch, Gary Norman Barber
  • Patent number: 5614360
    Abstract: A photographic element and an aqueous coating composition for providing a layer to a photographic element are disclosed. The coating composition comprises gelatin in a concentration greater than about 6% by weight, and a palladium complex having the structure: ##STR1## wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6, R.sup.7, and R.sup.8 are independently selected from hydrogen, alkyl, alkenyl, aryl or alkaryl, the alkyl, alkenyl, aryl, or alkaryl optionally being substituted with a hydroxy, sulfonate, amino or ammonium group; and wherein any two of R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6, R.sup.7, and R.sup.8 can be bonded to form a ring;Z.sup.1 and Z.sup.
    Type: Grant
    Filed: December 16, 1994
    Date of Patent: March 25, 1997
    Assignee: Eastman Kodak Company
    Inventors: Kenneth G. Harbison, Wilbur S. Gaugh, Thomas H. Whitesides, James A. Friday
  • Patent number: 5578440
    Abstract: A silver halide photographic material having high sensitivity, reduced in fog and excellent in storage stability is described, which comprises a support having thereon at least one constituent layer containing at least one hydrazone compound having a methine dye residue or an adsorbing group to silver halide through a covalent bond or containing at least one metallocene compound having a methine dye residue through a covalent bond.
    Type: Grant
    Filed: November 14, 1995
    Date of Patent: November 26, 1996
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Takanori Hioki, Tadashi Ikeda
  • Patent number: 5578435
    Abstract: An encased photographic material includes a silver halide light-sensitive material having at least one silver halide emulsion layer on a support. The emulsion layer contains gold- and chalcogen-sensitized silver halide grains and a thiocyanate salt therein. At least 60% of a total projected area of the silver halide grains is occupied by tabular grains having an aspect ratio of 3 or more and having on an average 10 or more dislocation lines per grain. A lightproof container contains the light-sensitive material such that an end portion of the light-sensitive material is positioned outside the lightproof container, and that a gas can pass between an inside and an outside of the lightproof container. A light-transmitting case encases and seals the lightproof container. A hydrogen cyanide gas scavenger is present inside the case.
    Type: Grant
    Filed: May 15, 1995
    Date of Patent: November 26, 1996
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Mikio Ihama
  • Patent number: 5518875
    Abstract: The present invention provides a method for obtaining a photographic material by coating on a support at least one layer comprising at least one photosensitive silver halide emulsion wherein the silver halide crystals contain silver chloride for at least 60 mole %, silver bromide in a range from 5 mole % to 40 mole % and silver iodide in a range from 0 mole % to 1 mole %, characterized in that a water soluble iridium compound is added between the end of the physical ripening and the end of the chemical ripening to said silver halide emulsion at a pH between 4 and 6.5, at a pCl between -0.3 and 1 and at a ratio by weight of gelatin to silver halide, expressed as equivalent amount of silver nitrate between 0.05 and 0.5.
    Type: Grant
    Filed: March 29, 1995
    Date of Patent: May 21, 1996
    Assignee: Agfa-Gevaert, N.V.
    Inventors: Jos Vaes, Luc Wabbes
  • Patent number: 5500335
    Abstract: The present invention provides a photographic emulsion comprising comprising silver halide grains, an iridium containing hexacoordination complex, and at least two grain surface modifiers, wherein the first of the grain surface modifiers is a transition metal complex comprising a nitrosyl or thionitrosyl ligand with a transition metal selected from the Groups 5 to 10, inclusive, of the periodic table, and the second of the grain surface modifiers is a transition metal complex comprising a transition metal, other than iridium, which is selected from Groups 7 to 10, inclusive, of the periodic table.
    Type: Grant
    Filed: October 31, 1994
    Date of Patent: March 19, 1996
    Assignee: Eastman Kodak Company
    Inventor: Eric L. Bell
  • Patent number: 5480771
    Abstract: The present invention provides a photographic emulsion silver halide grains having incorporated therein or thereon a dopant, a grain surface modifier, and a hexacoordination complex comprising iridium, wherein the dopant is a transition metal complex comprising a nitrosyl or thionitrosyl ligand with a transition metal selected from the Groups 5 to 10 of the periodic table, and the grain surface modifier is a transition metal complex comprising a transition metal, other than iridium, which is selected from Groups 7 to 10 of the periodic table.
    Type: Grant
    Filed: September 30, 1994
    Date of Patent: January 2, 1996
    Assignee: Eastman Kodak Company
    Inventor: Eric L. Bell
  • Patent number: 5478715
    Abstract: A silver halide photographic material comprising a support and a silver halide emulsion layer provided thereon. The silver halide emulsion is prepared by nuclear formation, crystal growth and chemical sensitization. All or a part of the nuclear formation or the crystal growth is conducted in the presence of a hexa-coordinated cyano-complex to introduce the complex into crystal lattice of the silver halide. The density of the hexa-coordinated cyano-complex contained in surface parts of silver halide grains is in the range of 10.sup.-4 to 10.sup.-2 mol per 1 mol of silver. The surface parts of silver halide grains has a thickness of not more than 20.ANG. from the surfaces of the grains. The chemical sensitization is conducted using a gold sensitizer. The silver halide emulsion is prepared using a synthetic polymer as a protective colloid in place of gelatin. In the cases in which gelatin is used, it is present in an amount of not more than 10 g per 1 mol of silver.
    Type: Grant
    Filed: June 14, 1994
    Date of Patent: December 26, 1995
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Tomoyuki Ohzeki, Shinji Ikari
  • Patent number: 5457022
    Abstract: A silver halide photographic material comprising a support having thereon at least one silver halide emulsion layer, wherein at least one layer contains at least one metallocene compound.
    Type: Grant
    Filed: June 17, 1994
    Date of Patent: October 10, 1995
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Takanori Hioki, Tadashi Ikeda
  • Patent number: 5376522
    Abstract: A silver halide photographic material having photographic constituent layers on a support, which photographic material is characterized in that at least one of said photographic constituent layers is a silver halide emulsion layer, at least 50% in number of the light-sensitive silver halide grains in said silver halide emulsion layer being grains that contain at least 60 mol % of silver bromide, and at least one of said photographic constituent layers containing at least one of the compounds represented by the following general formula (I):[HlAu.sub.m (L).sub.n (X).sub.p ].sub.q (I)where L is a 1igand in a 5- or 6-membered hetero ring; X is an anionic group; l is an integer of 0-2; m is an integer of 1 or 2; n is an integer of 1-3; p is an integer of 0-3; and q is an integer of 1-4.
    Type: Grant
    Filed: August 24, 1993
    Date of Patent: December 27, 1994
    Assignee: Konica Corporation
    Inventors: Hideki Takiguchi, Tomoyuki Nakayama, Nobuaki Kagawa, Hakubun Ohashi
  • Patent number: 5374513
    Abstract: A silver halide photographic light-sensitive material is disclosed. The light-sensitive material comprises a spectrally sensitized silver halide emulsion layer and a non-light-sensitive layer provided on a support. According to the present invention, the silver halide emulsion layer or the non-light-sensitive layer contains a complex of Ni, Co, Mn or Zn with a nitrogen-containing heterocyclic compound represented by the following formula: ##STR1## wherein ##STR2## Y is CR.sup.3 or N; Z is CR.sup.4 or N; each of R.sup.1, R.sup.2, R.sup.3 and R.sup.4 independently is hydrogen, a halogen atom, hydroxyl, amino, hydroxyamino, cyano, an alkyl group, an aryl group, an alkylthio group, an alkylamino group, an arylamino group, an alkoxycarbonyl group or an acylamino group; R.sup.1 and R.sup.
    Type: Grant
    Filed: December 15, 1992
    Date of Patent: December 20, 1994
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Katsuhisa Ohzeki, Hiroyuki Asanuma
  • Patent number: 5278041
    Abstract: A silver halide color light-sensitive material is disclosed. The light-sensitive material comprises a support and a silver halide emulsion layer provided on the support. The emulsion layer comprises silver halide grains which have been formed in the presence of a complex of rhenium, molybdenum, iridium, rhodium, ruthenium, osmium, cadmium, zinc, palladium, platinum, gold, iron, nickel, cobalt, tungsten, or chromium each having at least one cyanate ligand, isocyanate ligand or fluminate ligand. The light-sensitive material is high in speed, low in fog and excellent in reciprocity low failure characteristics.
    Type: Grant
    Filed: March 30, 1992
    Date of Patent: January 11, 1994
    Assignee: Konica Corporation
    Inventors: Shuji Murakami, Yukio Ohya, Tsuyoshi Ikeda, Shigeo Tanaka, Mitsuhiro Okumura
  • Patent number: 5252455
    Abstract: This invention provides gold(I) complexes comprising sulfur- and selenium-substituted macrocyclic polyether ligands, photographic elements containing the compounds, and emulsions containing the compounds. The compounds include monomers and dimers having the following formulas, respectively:[AuL].sup.+ X.sup.- or [AuL].sub.2.sup.2+ 2X.sup.-wherein X.sup.- is any suitable anion such as tetrafluoroborate, nitrate, etc., and wherein L is a macrocyclic ligand containing at least two thioether and/or selenoether linkages and comprising from about 12 to about 30 members in the ring. The general structural formula for the macrocyclic compounds L may be represented as follows: ##STR1## wherein Q.sub.1 and Q.sub.2 are each independently sulfur or selenium, and R.sub.1 and R.sub.
    Type: Grant
    Filed: March 4, 1992
    Date of Patent: October 12, 1993
    Assignee: Eastman Kodak Company
    Inventor: Joseph C. Deaton
  • Patent number: 5221604
    Abstract: A silver halide photographic material comprising a support having thereon at least one silver halide emulsion layer wherein the silver halide emulsion contains a salt of a metal ion of which the atomic number is at least 21 alone or together with a chelating agent and wherein the silver halide emulsion has been chemically sensitized in the presence of a chemical sensitization promoter comprising at least one of a silver halide solvent and an adsorbable compound.
    Type: Grant
    Filed: May 22, 1991
    Date of Patent: June 22, 1993
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Hiroyuki Mifune, Hiroyuki Asanuma
  • Patent number: 5169751
    Abstract: The invention relates to a novel process for the chemical sensitization of silver halide photographic emulsions.The process according to the invention comprises adding as additional sensitizing agents a 40-260 .mu. moles/mole of a cyclic polyether containing 1 nitrogen and 5 oxygen atoms, or 2 nitrogen and 4 oxygen atoms, or 3 nitrogen and 3 oxygen atoms, or 4 nitrogen and 2 oxygen atoms as well as 12 carbon atoms and/or their complexes formed with gold and/or palladium and optionally 40-260 .mu. moles/mole of silver halide) of gold (I) or gold (III) sulfide to the sulfur-sensitized emulsion, and employing the cyclic polyether in relation to the noble metal salt in a molar ratio of 0.5:1-5:1 for the complex formation.
    Type: Grant
    Filed: January 15, 1991
    Date of Patent: December 8, 1992
    Assignee: Forte Photochemical Industry
    Inventors: Miklos Szucs, Judit Csaplaros, Janos Becso, Laszlo Fenichel, Peter Bako, Laszlo Toke
  • Patent number: 5156945
    Abstract: A silver halide color photographic material comprising a support having thereon at least one silver halide emulsion layer, wherein the photosensitive material contains at least one compound represented by General Formula (I), and at least one type of compound represented by General Formula (II) or an organometallic complex which has copper, cobalt, nickel, palladium or platinum as the central metal and which has at least one bidentate organic ligand, wherein general Formula (I) has the following formula: ##STR1## and general Formula (II) has the following formula:R.sub.10 --W--R.sub.11 (II)wherein the variables are defined in the specification.
    Type: Grant
    Filed: February 21, 1990
    Date of Patent: October 20, 1992
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Kazuhiko Matsumoto, Masakazu Morigaki, Shigeo Hirano, Satoshi Nagaoka
  • Patent number: 5049484
    Abstract: Improved chemical sensitization is provided by a photographic silver halide emulsion chemically sensitized with water-soluble gold(I) compound represented by the formula: ##STR1## wherein Z represents the substituted or unsubstituted nitrogen and carbon atoms necessary to complete a 5- or 6-member imide nucleus; and M is a cation. Such a chemically sensitized photographic silver halide emulsion is useful in a photographic silver halide element and process.
    Type: Grant
    Filed: November 16, 1990
    Date of Patent: September 17, 1991
    Assignee: Eastman Kodak Company
    Inventor: Joseph C. Deaton
  • Patent number: 5049485
    Abstract: A photographic silver halide material is chemically sensitized with a soluble gold(I) compound of the formula:AuL.sub.2.sup.+ X.sup.- or AuL(L.sup.1).sup.+ X.sup.-wherein L is a mesoionic compound; X is an anion; and L.sup.1 is a Lewis donor ligand. The novel gold(I) compounds possess properties which are advantageous compared to the properties of previously known gold compounds.
    Type: Grant
    Filed: November 16, 1990
    Date of Patent: September 17, 1991
    Assignee: Eastman Kodak Company
    Inventor: Joseph C. Deaton
  • Patent number: 5037732
    Abstract: Photographic silver halide emulsions are disclosed comprised of radiation sensitive silver halide grains exhibiting a face centered cubic crystal lattice structure internally containing a carbonyl coordination ligand and a transition metal chosen from groups 8 and 9 of the periodic table of elements.
    Type: Grant
    Filed: August 28, 1989
    Date of Patent: August 6, 1991
    Assignee: Eastman Kodak Company
    Inventors: Woodrow G. McDugle, Alfred P. Marchetti, John E. Keevert, Marian S. Henry, Myra T. Olm
  • Patent number: 4988615
    Abstract: The addition of certain classes of organic salts to infrared sensitive silver halide photographic emulsions can provide supersensitization, improved liquid hold time stability, and photographic emulsion stability.
    Type: Grant
    Filed: February 10, 1988
    Date of Patent: January 29, 1991
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Paul Davies, Nelson B. O'Bryan, Jr., James B. Philip, Jr.
  • Patent number: 4981781
    Abstract: Photographic silver halide emulsions are disclosed comprised of radiation sensitive silver halide grains exhibiting a face centered cubic crystal lattice structure internally containing oxo coordination ligands and a transition metal chosen from groups 6, 7, and 8 of the periodic table of elements.
    Type: Grant
    Filed: August 28, 1989
    Date of Patent: January 1, 1991
    Assignee: Eastman Kodak Company
    Inventors: Woodrow G. McDugle, John E. Keevert, Alfred P. Marchetti
  • Patent number: 4945035
    Abstract: Photographic silver halide emulsions are disclosed comprised of radiation sensitive silver halide grains containing greater than 50 mole percent chloride and less than 5 mole percent iodide, based on total silver, with any residual halide being bromide, said grains exhibiting a face centered cubic crystal lattice structure formed in the presence of a hexacoordination complex of rhenium, ruthenium, or osmium with at least four cyanide ligands. The emulsions exhibit increased sensitivity.
    Type: Grant
    Filed: April 8, 1988
    Date of Patent: July 31, 1990
    Assignee: Eastman Kodak Company
    Inventors: John E. Keevert, Jr., Woodrow G. McDugle, Raymond S. Eachus
  • Patent number: 4937180
    Abstract: Photographic emulsions are disclosed comprised of radiation sensitive silver bromide grains optionally containing iodide. The grains exhibit a face centered cubic crystal lattice structure and are formed in the presence of a hexacoordination complex of rhenium, ruthenium, or osmium with at least four cyanide ligands.
    Type: Grant
    Filed: April 8, 1988
    Date of Patent: June 26, 1990
    Assignee: Eastman Kodak Company
    Inventors: Alfred P. Marchetti, Woodrow G. McDugle, Raymond S. Eachus
  • Patent number: 4933272
    Abstract: Photographic silver halide emulsions are disclosed comprised of radiation sensitive silver halide grains exhibiting a face centered cubic crystal lattice structure internally containing a nitrosyl or thionitrosyl coordination ligand and a transition metal chosen from groups 5 to 10 inclusive of the periodic table of elements.
    Type: Grant
    Filed: April 8, 1988
    Date of Patent: June 12, 1990
    Assignee: Eastman Kodak Company
    Inventors: Woodrow G McDugle, Anthony D. Gingello, John A. Haefner, John E. Keevert, Jr., Alfred P. Marchetti
  • Patent number: 4892808
    Abstract: A silver halide emulsion contained in a photographic element is protected against hydrogen cyanide gas, which may evolve from carbon black contained in a non-light sensitive material associated with the photographic element, by a scavenger for hydrogen cyanide gas in a location where it will intercept the hydrogen cyanide gas.
    Type: Grant
    Filed: May 12, 1989
    Date of Patent: January 9, 1990
    Assignee: Eastman Kodak Company
    Inventors: Kenneth G. Harbison, Wilbur S. Gaugh
  • Patent number: 4886739
    Abstract: In a thermally processable imaging element and process an imaging layer comprising a photothermographic or thermographic imaging composition and 2.5 to 20% by weight of the layer of at least one hydrolyzed polyalkoxysilane (hydrolyzed Si(OR.sub.1).sub.4 or hydrolyzed R.sub.2 --Si(OR.sub.3).sub.3) enables increased maximum image density. Such a hydrolyzed polyalkoxysilane in a hydrophobic imaging layer of such an element enables increased adhesion of the imaging layer to a contiguous hydrophobic hydrophilio layer, particularly a hydrophilic overcoat layer.
    Type: Grant
    Filed: August 10, 1988
    Date of Patent: December 12, 1989
    Assignee: Eastman Kodak Company
    Inventor: Wojciech M. Przezdziecki
  • Patent number: 4835093
    Abstract: A photographic silver halide emulsion is disclosed comprised of radiation sensitive silver halide grains exhibiting a face centered cubic crystal lattice structure and internally containing rhenium ions.
    Type: Grant
    Filed: April 8, 1988
    Date of Patent: May 30, 1989
    Assignee: Eastman Kodak Company
    Inventors: Gaile A. Janusonis, Ralph W. Jones, James R. Buntaine, Myra T. Olm, Raymond S. Eachus
  • Patent number: 4828962
    Abstract: Photographic elements comprising a negative working silver halide emulsion containing high intensity reciprocity failure reducing amounts of dopant comprising both ruthenium and iridium ions.
    Type: Grant
    Filed: September 8, 1987
    Date of Patent: May 9, 1989
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Nicholas E. Grzeskowiak, Keith A. Penfound
  • Patent number: 4784939
    Abstract: Radiation sensitive thermally developable imaging elements comprise:(a) photosensitive silver halide,(b) light insensitive silver salt oxidizing agent,(c) reducing agent for silver ions, and(d) a benzoyl acid class of antifoggant.The antifoggants are effective in both reducing spurious background image densities and in stabilizing the film against sensitometric changes during storage.
    Type: Grant
    Filed: September 2, 1987
    Date of Patent: November 15, 1988
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Oanh Van Pham
  • Patent number: 4772545
    Abstract: A silver halide photographic material in which a silver iodobromide emulsion having an iodide content of 2 mole % or more and an organometallic salt functioning as a development inhibitor are employed in combination, whereby an improvements in graininess and sharpness of a developed image are achieved and high photographic speed is retained.A process for producing silver images using the silver halide photographic material is also disclosed.
    Type: Grant
    Filed: July 22, 1986
    Date of Patent: September 20, 1988
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Shingo Nishiyama, Kiyoshi Kawai
  • Patent number: 4732846
    Abstract: A heat-developable light-sensitive material is described, comprising a support having provided thereon at least(a) a binder;(b) a light-sensitive silver halide;(c) at least one silver salt of a compound represented by formula (I) or (II) ##STR1## wherein Z represents a non-metallic atomic group forming a heterocyclic ring together with the nitrogen atom,A--C.tbd.
    Type: Grant
    Filed: April 30, 1986
    Date of Patent: March 22, 1988
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Toshiaki Aono, Masatoshi Kato, Hiroshi Hara
  • Patent number: 4728600
    Abstract: A heat-developable light-sensitive material is described, comprising a support having thereon at least (1) a light-sensitive silver halide, (2) a silver salt oxidizing agent, (3) silver salt particles having adsorbed thereon at least one compound selected from a cyclic imino compound represented by formula (I) described below and a mercapto compound represented by formula (II) described below, (4) a reducing agent, and (5) a binder.Formula (I) is represented by ##STR1## wherein Z represents a non-metallic atomic group forming a heterocyclic ring containing an imino group together with the nitrogen atom of formula (I).Formula (II) is represented byR--S--M (II)wherein M represents a hydrogen atom or an alkali metal atom; and R represents a substituted or unsubstituted aliphatic hydrocarbon group, a substituted or unsubstituted aromatic hydrocarbon group, or a substituted or unsubstituted heterocyclic group.
    Type: Grant
    Filed: April 17, 1986
    Date of Patent: March 1, 1988
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Hiroshi Hara, Toshiaki Aono
  • Patent number: 4719174
    Abstract: A direct positive silver halide photographic light-sensitive material is described containing a weak electron donative, adsorptive compound represented by formula (I) or (II) effective for depressing formation of a re-reversed negative image, which is not a spectral sensitizing agent for silver halide or a nucleating agent:D--L--X (I)D--X (II)whereinD represents electron donative atoms comprising an aromatic ring or hereto ring, which is unsubstituted or substituted;L represents a linking group containing at least one of C, N, S and O and an atom or atoms necessary for cutting a .pi.-conjunction system; andX represents a group which is adsorptive with respect to silver halide and contains at least one of C, N, S, O and Se.
    Type: Grant
    Filed: April 2, 1986
    Date of Patent: January 12, 1988
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Shigeo Hirano, Tsutomu Miyasaka, Shinsaku Fujita