Heterocyclic Compound Patents (Class 430/613)
  • Patent number: 7741017
    Abstract: The present invention relates to a silver halide color photographic light-sensitive material wherein at least one of light-sensitive silver halide emulsion layers includes a silver halide emulsion having a silver chloride content of at least 95 mol % and a silver iodide content of 0.05 mol % to 0.75 mol % and/or a silver bromide content of 0.05 mol % to 4.00 mol % and further at least one compound represented by the following formula (I): X-(L)n-Y??Formula (I) wherein X represents a group adsorptive to a silver halide, L represents a divalent connecting group comprising one of an atom and an atomic group including at least one of a carbon atom, a nitrogen atom, a sulfur atom and an oxygen atom, Y denotes a reducible group and n denotes an integer of 0 or 1.
    Type: Grant
    Filed: June 3, 2008
    Date of Patent: June 22, 2010
    Assignee: FUJIFILM Corporation
    Inventors: Atsushi Matsunaga, Tadashi Inaba, Shinichi Ichikawa
  • Patent number: 7531298
    Abstract: A silver halide color photosensitive material, wherein the total coating amount of silver of the photosensitive silver halide is 6.0 g/m2 or less in terms of metal silver, and the photosensitivity is the ISO speed of 400 or more, the silver halide color photosensitive material further comprising at least one compound selected from a group consisting of the following type 1 and type 2: (Type 1) Compound which undergoes a one-electron oxidation so as to form a one-electron oxidation product capable of, through subsequent bond cleavage reaction, releasing one or more electrons, (Type 2) Compound which undergoes a one-electron oxidation so as to form a one-electron oxidation product capable of, after subsequent bond formation reaction, releasing one or more electrons.
    Type: Grant
    Filed: November 4, 2004
    Date of Patent: May 12, 2009
    Assignee: FUJIFILM Corporation
    Inventors: Atsushi Matsunaga, Makoto Kikuchi, Kiyoshi Morimoto, Masahiko Taniguchi, Naoyuki Hanaki
  • Patent number: 7455959
    Abstract: The invention provides a color photographic element comprising at least one light-sensitive silver halide emulsion layer or a non silver-containing light-insensitive layer, in which at least one of these layers contains a colorless imidazole compound of formula (I) that undergoes less than 10% chemical or redox reaction with oxidized developer and which enables the photographic speed of the element to be increased by at least 0.
    Type: Grant
    Filed: October 1, 2004
    Date of Patent: November 25, 2008
    Assignee: Eastman Kodak Company
    Inventors: Bernard A. Clark, Philip A. Allway, Tania Zuberi, Stephen P. Singer, Charles E. Heckler, Louis E. Friedrich
  • Patent number: 7410745
    Abstract: The invention provides a photothermographic material including: a support and an image-forming layer including a non-photosensitive silver salt, a photosensitive silver halide, a binder, and a reduction agent disposed on the support, wherein a silver iodide content in the photosensitive silver halide is in a range from 40 mol % to 100 mol %; and an average sphere-equivalent diameter of the photosensitive silver halide is in a range from 0.3 ?m to 5.0 ?m. The photothermographic material may further include a silver iodide complex forming agent as a compound which substantially reduces visible light absorption caused by the photosensitive silver halide after thermal development. At least 50%, in terms of a projected area, of the photosensitive silver halide may be occupied by tabular silver halide grains having an aspect ratio of from 2 to 50 and being deposited with a silver salt in an epitaxial growth manner.
    Type: Grant
    Filed: December 17, 2003
    Date of Patent: August 12, 2008
    Assignee: FUJIFILM Corporation
    Inventors: Tomoyuki Ohzeki, Eiichi Okutsu
  • Patent number: 7396638
    Abstract: The present invention relates to a photothermographic material including, on a same surface of a support, a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent and a binder, wherein the photosensitive silver halide has a silver iodide content within a range from 40 to 100 mol %, and the material is thermally developed within a developing time of 12 seconds or less. The invention also relates to an image forming method using the photothermographic material.
    Type: Grant
    Filed: January 30, 2004
    Date of Patent: July 8, 2008
    Assignee: FUJIFILM Corporation
    Inventor: Fumito Nariyuki
  • Patent number: 7384731
    Abstract: A method for forming color images comprising subjecting a silver halide color photosensitive material to a development processing in the presence of a compound (A) defined below, wherein the silver halide color photosensitive material having a blue-sensitive unit, a green-sensitive unit and a red-sensitive unit, each of which comprises at least one silver halide emulsion layer, and at least one non-light-sensitive layer on a support, compound (A): a heterocyclic compound having one or two hetero atoms, the heterocyclic compound being capable of increasing speed of the silver halide color photosensitive material by the presence thereof in comparison to the case where the heterocyclic compound is absent.
    Type: Grant
    Filed: September 21, 2004
    Date of Patent: June 10, 2008
    Assignee: FUJIFILM Corporation
    Inventors: Junichiro Hosokawa, Naoharu Kiyoto, Yoshio Ishii, Takanori Hioki, Katsumi Kobayashi, Takashi Hoshimiya
  • Patent number: 7354701
    Abstract: The invention provides a color photographic element comprising at least one light-sensitive silver halide emulsion layer or a non silver-containing light-insensitive layer, in which at least one of these layers contains a colorless heterocyclic compound having either one or two hetero atoms in the ring or ring system, being other than an imidazole compound, that undergoes less than 10% chemical or redox reaction directly with oxidized developer and which has a partition coefficient to enable the photographic speed of the element to be increased by at least 0.03 stop without increasing granularity, compared to the same element without the compound. The heterocyclic compounds increase speed without a concomitant increase in size of the light-sensitive silver halide grains.
    Type: Grant
    Filed: October 1, 2004
    Date of Patent: April 8, 2008
    Assignee: Eastman Kodak Company
    Inventors: Bernard A. Clark, Philip A. Allway, Tania Zuberi, Stephen P. Singer, Charles E. Heckler, Louis E. Friedrich
  • Patent number: 7335466
    Abstract: A silver salt photothermographic dry imaging material including non-photosensitive aliphatic carboxylic acid silver salts; a photosensitive emulsion containing photosensitive silver halide grains; a silver ion reducing agent; a binder; and a cyan coloring leuco dye. A percentage of the photosensitive silver halide grains having a mean particle size of 0.01 or more ?m and 0.04 ?m or less is 5% or more by mass and 50% or less by mass of total photosensitive silver halide grains by conversion into a silver amount.
    Type: Grant
    Filed: May 22, 2006
    Date of Patent: February 26, 2008
    Assignee: Konica Minolta Holdings, Inc.
    Inventors: Hiroshi Kashiwagi, Narito Goto
  • Patent number: 7303851
    Abstract: Disclosed is a silver halide photographic light-sensitive material wherein a silver halide emulsion layer and/or a hydrophilic colloid layer contains at least one hydrazine derivative, and a silver halide emulsion is spectrally sensitized with a particular dye, and which contains a benzotriazol compound. There is provided a silver halide photographic light-sensitive material that exhibits superior residual color property and can provide stable photographic performance even after a long term running with a reduced silver amount.
    Type: Grant
    Filed: September 29, 2003
    Date of Patent: December 4, 2007
    Assignee: Fujifilm Corporation
    Inventors: Mitsunori Hirano, Kunio Ishigaki, Tokuju Oikawa
  • Patent number: 7267935
    Abstract: Incorporating a crown ether-alkali metal complex cation of an enolate anion of an aldehyde having at least one electron withdrawing group in the alpha (?) position, provides thermally developable materials with imaging properties that have little change with changes in humidity. Both photothermographic and thermographic materials are provided, and particularly photothermographic materials having lower silver coverage.
    Type: Grant
    Filed: June 19, 2006
    Date of Patent: September 11, 2007
    Assignee: Carestream Health, Inc.
    Inventors: Sharon M. Simpson, Kumars Sakizadeh
  • Patent number: 7258970
    Abstract: A photothermographic material of the present invention comprises: a support; a photosensitive silver halide; a non-photosensitive organic silver salt; a heat developer; a binder; and a fluorine compound containing a specific structure.
    Type: Grant
    Filed: August 8, 2002
    Date of Patent: August 21, 2007
    Assignee: Fujifilm Corporation
    Inventors: Yasuhiro Yoshioka, Takahiro Ishizuka, Terukazu Yanagi
  • Patent number: 7255982
    Abstract: Incorporation of certain arylboronic acid compounds into photothermographic materials provides materials with reduced initial image Dmin and improved hot-dark Dmin print stability without unacceptable loss in sensitometric properties.
    Type: Grant
    Filed: February 10, 2006
    Date of Patent: August 14, 2007
    Assignee: Carestream Health, Inc.
    Inventors: Kui Chen-Ho, Kumars Sakizadeh
  • Patent number: 7232652
    Abstract: A photothermographic material including, on at least one side of a support, an image forming layer including at least a photosensitive silver halide, a first organic silver salt, a reducing agent, and a binder, and at least one non-photosensitive layer which is disposed on the same side as the image forming layer and farther from the support than the image forming layer, wherein 50% or more of a total projected area of the photosensitive silver halide is occupied by tabular grains having a silver iodide content of 40 mol % or higher and an aspect ratio of 2 or more, and the non-photosensitive layer comprises a second organic silver salt, and an image forming method using the same. The invention provides a photothermographic material and an image forming method excellent in image tone and image storability.
    Type: Grant
    Filed: November 7, 2005
    Date of Patent: June 19, 2007
    Assignee: Fujifilm Corporation
    Inventor: Kouta Fukui
  • Patent number: 7189502
    Abstract: A radiographic material containing tabular silver halide grains also includes an amido compound as an antifoggant precursor that can slowly release an antifoggant over time. These compounds are present in reactive association with the silver halide in tabular silver halide emulsion layers, and are present in an amount of at least 0.5 mmol/mol of silver. The radiographic materials are protected from fog during storage particularly in high temperature environments.
    Type: Grant
    Filed: October 3, 2005
    Date of Patent: March 13, 2007
    Assignee: Eastman Kodak Company
    Inventors: Robert E. Dickerson, George J. Burgmaier, Steven P. Szatynski, Stephen A. Hershey
  • Patent number: 7175977
    Abstract: A black and white monosheet thermographic recording material comprising a support and a thermosensitive element, the thermosensitive element containing a substantially light-insensitive organic silver salt, an organic reducing agent therefor in thermal working relationship therewith, a binder and at least one five-membered heterocyclic ring compound selected from the group consisting of optionally substituted, optionally annelated 1-thia-2,3-diazole compounds; optionally substituted, optionally annelated 1-thia-2,5-diazole compounds; optionally substituted 1-thia-2,4-diazole compounds; optionally substituted 1-thia-3,4-diazole compounds; optionally substituted thiatriazole compounds; optionally substituted, optionally annelated 1-seleno-2,3-diazole compounds; optionally substituted, optionally annelated 1-seleno-2,5-diazole compounds; optionally substituted 1-seleno-2,4-diazole compounds; optionally substituted 1-seleno-3,4-diazole compounds; and optionally substituted selenotriazole compounds, with the provi
    Type: Grant
    Filed: November 30, 2004
    Date of Patent: February 13, 2007
    Assignee: Agfa-Gevaert
    Inventors: Ingrid Geuens, Johan Loccufier
  • Patent number: 7166421
    Abstract: Black-and-white, aqueous-based, silver halide-containing photothermographic materials have increased stability both prior to use and after imaging with the incorporation of at least 0.005 g/m2 of a tetrafluoroborate salt.
    Type: Grant
    Filed: December 29, 2004
    Date of Patent: January 23, 2007
    Assignee: Eastman Kodak Company
    Inventors: Sharon M. Simpson, Kumars Sakizadeh, Leif P. Olson
  • Patent number: 7163785
    Abstract: A silver halide photographic material, including a support having thereon a silver halide emulsion layer, the silver halide emulsion layer containing silver halide particles having a silver chloride content of more than or equal to 90 mol %, wherein a compound represented by Formula (S) is contained in the interior and on a surface of the silver halide particles and in a binder of the silver halide emulsion layer, and the silver halide particles have more than two silver halide phases therein having different concentration of the compound represented by Formula (S):
    Type: Grant
    Filed: November 20, 2002
    Date of Patent: January 16, 2007
    Assignee: Konica Minolta Photo Imaging, Inc.
    Inventors: Toshiya Kondo, Koichiro Kuroda
  • Patent number: 7153638
    Abstract: A silver halide color photosensitive material comprising a support and, superimposed thereon, a blue-sensitive layer unit, a green-sensitive layer unit and a red-sensitive layer unit, each of these light-sensitive layer units composed of at least one silver halide emulsion layer, together with at least one nonphotosensitive layer, wherein at least one compound (A) and at least one compound (B) are contained, the compound (A) being a heterocyclic compound of less than 4.5 C log P which when added, is capable of enhancing the sensitivity of the silver halide color photosensitive material as compared with that exhibited when not added, the compound (B) being a heterocyclic compound of 4.5 or greater C log P which when added, is capable of enhancing the sensitivity of the silver halide color photosensitive material as compared with that exhibited when not added.
    Type: Grant
    Filed: February 25, 2005
    Date of Patent: December 26, 2006
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Junichiro Hosokawa, Takanori Hioki
  • Patent number: 7150963
    Abstract: A silver halide emulsion containing a compound represented by the following formula (1) or (2): wherein R1 represents an OH group, an SH group, or an —NR2R3 group in which R2 and R3 each independently represent a hydrogen atom, an alkyl group, an aryl group, a heterocyclic group, an alkylsulfonyl group, or an arylsulfonyl group; L represents an alkenylene group, an arylene group, an —N?N— group, a divalent aromatic heterocyclic group, or a —C(R4)?N— group in which R4 represents a hydrogen atom, an alkyl group, an aryl group, or a heterocyclic group; n represents 0 or 1; X and Y each independently represent a nitrogen atom or a —CR5— group in which R5 represents a hydrogen atom or a substituent bondable to the carbon atom; Z represents an atomic group in the 5- to 7-membered ring; and M represents a hydrogen atom, a metal ion, or a quaternary ammonium ion.
    Type: Grant
    Filed: September 9, 2004
    Date of Patent: December 19, 2006
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Katsuyuki Watanabe, Hideo Hanawa, Takeshi Funakubo
  • Patent number: 7144691
    Abstract: A color photographic material which contains on a support at least one blue-sensitive silver halide emulsion layer containing at least one yellow coupler, at least one green-sensitive silver halide emulsion layer containing at least one magenta coupler, at least one red-sensitive silver halide emulsion layer containing at least one cyan coupler, together with customary non-light-sensitive layers, characterized in that at least one layer contains a compound of formula (I) or (II) wherein the R1-radicals and R2-radicals are preferably methyl; and wherein the compounds of formula (II) are preferably (III) R3 is a radical —CH(CH3)—X—D, wherein X is phenylene.
    Type: Grant
    Filed: February 25, 2003
    Date of Patent: December 5, 2006
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Stéphane Biry, Francesco Fuso, Andreas Kramer
  • Patent number: 7138222
    Abstract: The present invention provides a silver halide color photographic photosensitive material that includes coupler-containing sensitive emulsion layer units on a support. Each of the photosensitive emulsion layer units are constituted of at least two photosensitive emulsion layers having sensitivities which are different from each other. An emulsion layer of the highest sensitivity among the at least two photosensitive emulsion layers contains at least one silver halide emulsion in which tabular silver halide grains with an average aspect ratio of 3 or more substantially including dislocation lines account for 50% or more of the total projected areas. Photosensitive emulsion layers other than the emulsion layer of the highest sensitivity consist of a silver halide emulsion containing silver halide grains that account for 70% or more of the total projected areas and include host grains that satisfy a specific aspect ratio condition and epitaxially joined protrusions.
    Type: Grant
    Filed: March 28, 2005
    Date of Patent: November 21, 2006
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Nobuyuki Haraguchi, Yasushi Miyamoto
  • Patent number: 7129031
    Abstract: A green-sensitized black-and-white silver halide negative working photographic material comprising a support having thereon at least one light-sensitive silver halide emulsion layer containing tabular silver halide grains, further comprising in said emulsion layer or in a layer adjacent thereto, a heteroatomic sulfinic acid compound, a disulfide compound or a combination thereof, wherein each of said compounds has a solubilizing group having a pKa-value of 10 or less.
    Type: Grant
    Filed: June 18, 2004
    Date of Patent: October 31, 2006
    Assignee: Agfa-Gevaert
    Inventors: Johan Loccufier, Dirk Bollen
  • Patent number: 7125657
    Abstract: The present invention provides a photothermographic material including a support having disposed thereon an image-forming layer that contains at least a non-photosensitive organic silver salt, a photosensitive silver halide, a reducing agent and a binder, and further including a compound represented by the following formula (I): A-(W)n-P??(I) wherein A represents an atomic group having at least two mercapto groups as the substituent; W represents a divalent linking group; n represents 0 or 1; and P represents a pyrazolidone group.
    Type: Grant
    Filed: December 16, 2003
    Date of Patent: October 24, 2006
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Katsuyuki Watanabe, Hiroyuki Mifune
  • Patent number: 7115359
    Abstract: A photothermographic material having a support provided on at least one side of the support light-sensitive silver halide particles, an organic silver salt and a reducing agent, as well as a leuco dye of a specific structure and a compound of a specific structure.
    Type: Grant
    Filed: July 15, 2004
    Date of Patent: October 3, 2006
    Assignee: Konica Minolta Medical & Graphic, Inc.
    Inventors: Yasushi Usagawa, Takeshi Habu
  • Patent number: 7097963
    Abstract: Black-and-white, aqueous-based, silver halide-containing photothermographic materials have increased stability after imaging with the incorporation of at least 0.0002 mol/m2 of a halogen-substituted tetraazaindene compound.
    Type: Grant
    Filed: April 18, 2005
    Date of Patent: August 29, 2006
    Assignee: Eastman Kodak Company
    Inventors: Chaofeng Zou, Kumars Sakizadeh, George J. Burgmaier, Roger L. Klaus
  • Patent number: 7094524
    Abstract: Thermally developable photothermographic materials comprise a backside layer that includes a backside stabilizer to reduce fog formation in high humidity conditions, thereby providing improved shelf stability. Useful backside stabilizers include an amine organic base whose conjugate acid has a pKa greater than 5. These backside stabilizers can be provided particularly in non-photosensitive compositions that include an antihalation composition.
    Type: Grant
    Filed: October 15, 2003
    Date of Patent: August 22, 2006
    Assignee: Eastman Kodak Company
    Inventors: Steven H. Kong, Kumars Sakizadeh, William D. Ramsden
  • Patent number: 7083908
    Abstract: A photothermographic material including a substrate carrying on one surface thereof an image forming layer containing at least a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent for a silver ion, and a binder, wherein the photosensitive silver halide has a silver iodide content of 40 to 100 mol %, and an average particle size of 5 to 80 nm, and the photothermographic material contains a compound of the following general formula (1); Q-(Y)n—C(Z1)(Z2)X??General formula (1) wherein Q represents a heterocycle, Y represents a divalent connecting group, n represents 0 or 1, Z1 and Z1 each represent a halogen atom, and X represents a hydrogen atom or an electron withdrawing group.
    Type: Grant
    Filed: April 14, 2003
    Date of Patent: August 1, 2006
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Seiichi Yamamoto, Eiichi Okutsu, Tomoyuki Ohzeki
  • Patent number: 7074550
    Abstract: A silver halide color photosensitive material comprising a support and, superimposed thereon, at least one blue-sensitive silver halide emulsion layer, green-sensitive silver halide emulsion layer and red-sensitive silver halide emulsion layer, wherein (i) the specified speed of the photosensitive material is 350 or higher, (ii) the coating amount of silver in the photosensitive material is 7 g/m2 or less, and (iii) any of the color-sensitive silver halide emulsion layers is composed of two or more silver halide emulsion layers of different photographic speeds, of which the silver halide emulsion layer with the highest photographic speed contains tabular silver halide grains of 8 or greater aspect ratio in a ratio of 70% or more based on the total projected area and regular-crystal silver halide grains of 0.1 to 0.5 ?m equivalent sphere diameter in a ratio of 0.5 to 5% based on the total projected area.
    Type: Grant
    Filed: September 23, 2004
    Date of Patent: July 11, 2006
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Masaaki Miki
  • Patent number: 7067243
    Abstract: A process for preparing a photothermographic material with increased photosensitivity, the photothermographic material comprising a support and a photo-addressable thermally developable element, exclusive of a compound R—S(M)n wherein R is an aliphatic hydrocarbon, aryl or heterocyclic group, M is a hydrogen atom, or cation, and letter n is a number determined so as to render the molecule neutral and also exclusive of a compound capable of releasing a mobile dye corresponding to or inversely corresponding to the reduction of silver halide to silver at elevated temperatures, the photo-addressable thermally developable element containing a photosensitive agent in catalytic association with a light-insensitive organic silver salt, a reducing agent for the light-insensitive organic silver salt in thermal working relationship therewith and a binder, comprising the steps of: (i) increasing the photosensitivity of a photosensitive silver halide by chemical sensitisation with a chemical sensitising merocyanine dye co
    Type: Grant
    Filed: March 7, 2003
    Date of Patent: June 27, 2006
    Assignee: Agfa Gevaert
    Inventors: Herman Uytterhoeven, Paul Callant
  • Patent number: 7029834
    Abstract: Thermally developable photothermographic materials comprise a backside layer that includes a backside stabilizer to reduce fog formation in high humidity conditions, thereby providing improved shelf stability. Useful backside stabilizers are nitrogen-containing aromatic heterocyclic compounds. These backside stabilizers can be provided particularly in non-photosensitive compositions that include an antihalation composition.
    Type: Grant
    Filed: October 15, 2003
    Date of Patent: April 18, 2006
    Assignee: Eastman Kodak Company
    Inventors: Steven H. Kong, Kumars Sakizadeh
  • Patent number: 7026109
    Abstract: The present invention provides a photothermographic material, comprising a photosensitive silver halide, a non-photosensitive organic solvent salt, a reducing agent for a silver ion, and a binder on one face of a support, for being applied by using an organic solvent, the photothermographic material further comprising at least one compound selected from the group of compounds consisting of: a compound represented by the following general formula (1), a compound having a ?-lactam ring, a compound having a group that is adsorptive to a silver halide and a group that reduces a silver halide and a precursor thereof:
    Type: Grant
    Filed: August 4, 2003
    Date of Patent: April 11, 2006
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Tomoyuki Ohzeki, Hiroyuki Mifune, Tadashi Inaba, Kohzaburoh Yamada, Katsuyuki Watanabe
  • Patent number: 7026104
    Abstract: A heat-developable photosensitive material comprising on a support light-sensitive silver halide, a light-insensitive organic silver salt, a reducing agent and a binder, wherein at least 30 mole % of the total light-sensitive silver halide is silver halide of high silver iodide content having an average ?-phase proportion of from 5 to 70 mole %, and a method of forming images on the heat-developable photosensitive material with a semiconductor laser.
    Type: Grant
    Filed: February 27, 2003
    Date of Patent: April 11, 2006
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Fumito Nariyuki
  • Patent number: 7014989
    Abstract: Black-and-white, aqueous-based, silver halide-containing photothermographic materials have increased stability after imaging with the incorporation of at least 0.00005 mol/m2 of a 4-substituted urazole.
    Type: Grant
    Filed: April 18, 2005
    Date of Patent: March 21, 2006
    Assignee: Eastman Kodak Company
    Inventors: Sharon M. Simpson, Kumars Sakizadeh
  • Patent number: 6964842
    Abstract: Aqueous-based photothermographic materials comprise a hydrophilic binder, preformed silver halides, an organic silver salt, a reducing agent composition, and one or more benzothiazolium, benzoselenazolium, or benzotellurazolium salts as antifoggants. These photothermographic materials can be used in combination with phosphor intensifying screens for radiographic imaging.
    Type: Grant
    Filed: August 14, 2003
    Date of Patent: November 15, 2005
    Assignee: Eastman Kodak Company
    Inventors: Chaofeng Zou, Roger L. Klaus
  • Patent number: 6951711
    Abstract: A silver halide color photographic lightsensitive material containing at least one compound capable of increasing photographic speed, the compound having at least three heteroatoms in its molecule, and wherein at least one layer of the silver halide emulsion layers comprises an emulsion, the emulsion consisting of a lightsensitive silver halide emulsion wherein 50% or more in number of all the silver halide grains are occupied by tabular grains having (111) faces as main planes, the tabular grains (i) composed of silver iodobromide or silver chloroiodobromide, (ii) having an equivalent circle diameter of 1.0 ?m or more and a thickness of 0.15 ?m or less, and (iii) composed of core portions of 0.1 ?m or less thickness free of growth ring structure and composed of silver iodobromide and shell portions having ten or more dislocation lines.
    Type: Grant
    Filed: October 23, 2003
    Date of Patent: October 4, 2005
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Masaaki Miki, Yoshiyasu Inami, Junichiro Hosokawa
  • Patent number: 6949334
    Abstract: A method for forming images on a silver halide color photographic photosensitive material having a substrate and photographic structural layers thereon, including, at least three silver halide color photosensitive layers having different photosensitive regions, respectively, and at least one non-photosensitive hydrophilic colloid layer is disclosed. At least one of the photosensitive layers contains 90 mol % or more of silver chloride. Shortly after the silver halide color photographic photosensitive material has been scan-exposed with laser beams, the material is rapid-processed with a low replenishing amount.
    Type: Grant
    Filed: April 14, 2003
    Date of Patent: September 27, 2005
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Naoto Ohshima, Akito Yokozawa, Naoya Shibata
  • Patent number: 6924089
    Abstract: An object of the present invention is to provide a novel heat-developable photosensitive material which hardly exerts an influence on the image color tone and exhibits high sensitivity. Disclosed is a heat-developable photosensitive material comprises, on the same surface of a substrate, at least (a) photosensitive silver halide, (b) a reducible silver salt, (c) a compound represented by the general formula (5), (d) a binder, (e) a compound represented by the general formula (6) or (7), and (f) a compound represented by the general formula (3).
    Type: Grant
    Filed: August 1, 2002
    Date of Patent: August 2, 2005
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Toyohisa Oya, Hirokazu Kyota, Kouta Fukui
  • Patent number: 6921631
    Abstract: A silver halide color photographic material, which can provide photographs reduced in unevenness of finished image density with high productivity and at low prices even when it undergoes exposure and photographic processing operations under high-speed transport in the form of sheets, and a method of forming images by use of such a photographic material.
    Type: Grant
    Filed: July 17, 2003
    Date of Patent: July 26, 2005
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Yasuaki Deguchi, Hiroyuki Yoneyama, Kazuaki Yoshida, Shin Soejima, Yoshiro Ochiai, Shinichi Nakahira
  • Patent number: 6919171
    Abstract: The present disclosure relates to aqueous dispersions of silver (carboxylate-azine toner) particles wherein the azine content of the particles is from about 0.01 to 10% by weight relative to silver carboxylate. The carboxylates are typically silver salts of long chain fatty acids and the azine toners are the compounds that function as development accelerators and toning agents such as phthalazine. These silver (carboxylate-azine) particles can be used to formulate imaging forming compositions that are useful in aqueous thermographic or photothermographic imaging elements.
    Type: Grant
    Filed: December 23, 2003
    Date of Patent: July 19, 2005
    Assignee: Eastman Kodak Company
    Inventors: Mark Lelental, Peter J. Ghyzel, John W. Boettcher, James L. Wakley, David A. Dickinson, Joe E. Maskasky, Roger L. Klaus, Victor P. Scaccia, Thomas Blanton
  • Patent number: 6916599
    Abstract: A photothermographic material comprising: a support; and a photosensitive silver halide, a nonphotosensitive organic silver salt, a reducing agent and a binder, wherein the photosensitive silver halide comprises 90% by mole or more of a silver iodide and has a silver iodobromide structure having an average silver iodide content of 35% by mole or less in vicinity of a surface thereof.
    Type: Grant
    Filed: April 21, 2003
    Date of Patent: July 12, 2005
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Fumito Nariyuki
  • Patent number: 6887656
    Abstract: Disclosed is a color photographic element comprising at least one light sensitive silver halide emulsion layer containing a compound that does not react with oxidized developer, has a Log Kow high enough to improve speed, compared to the same layer without the compound, and comprises (1) a thiadiazole, or (2) an oxadiazole, or (3) a 1,2,4 triazole bearing an amido substituent, and does not contain a hydroxyl or thiol group or their tautomeric equivalents on the azole ring.
    Type: Grant
    Filed: January 17, 2003
    Date of Patent: May 3, 2005
    Assignee: Eastman Kodak Company
    Inventors: Louis E. Friedrich, Philip A. Allway, Judith A. Bogie, Bernard A. Clark, Charles E. Heckler, Stephen P. Singer
  • Patent number: 6818390
    Abstract: A deformable color photographic silver halide material, said color photographic silver halide material comprising on a deformable plastic support at least one blue-sensitive silver halide emulsion layer containing at least one yellow coupler, at least one green-sensitive silver halide emulsion layer containing at least one magenta coupler and at least one red-sensitive silver halide emulsion layer containing at least one cyan coupler can be deformed without loss in image quality and is suitable for large formats and automatic processing.
    Type: Grant
    Filed: November 14, 2003
    Date of Patent: November 16, 2004
    Assignee: AGFA-Gevaert
    Inventors: Ly Cuong, Markus Geiger, Leon Vermeulen, Arno Schmuck
  • 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: 6808872
    Abstract: A silver salt photothermographic material exhibiting enhanced image quality and superior uniformity without causing uneven density is disclosed, comprising on a support a light-sensitive layer comprising a light-sensitive emulsion containing organic silver salt grains and light-sensitive silver halide grains, a reducing agent and a binder and a conductive layer, wherein the conductive layer contains at least one of compounds represented by the following general formulas: (Rf2)—(A2)s LiO3S—(CF2)m—SO3Li MO3S—(CF2)t—SO3M L[O3S—(CF2)u—SO3]
    Type: Grant
    Filed: June 10, 2003
    Date of Patent: October 26, 2004
    Assignee: Konica Corporation
    Inventor: Shinji Kudo
  • Publication number: 20040202971
    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: Application
    Filed: December 18, 2003
    Publication date: October 14, 2004
    Applicant: FUJI PHOTO FILM CO., LTD.
    Inventors: Hirotomo Sasaki, Hideki Maeta, Naoto Ohshima
  • Patent number: 6783925
    Abstract: A thermally processed image forming material containing elsewhere on a support a reducing agent, a binder and non-photosensitive fatty silver salt grains was disclosed, in which (1) the non-photosensitive fatty acid silver salt grains are prepared by mixing and reacting a silver ion-containing solution, the solvent of which being water or a mixture of water and an organic solvent, with a solution of a fatty acid alkali metal salt, the solvent of which being water, an organic solvent, or a mixture of water and an organic solvent, in a closed mixing means, or (2) the non-photosensitive fatty acid silver salt grains are prepared by micro-dispersing the reaction mixture at an operating pressure of 1,800 kg/cm2 or above using a ultrahigh pressure dispersion apparatus. Such thermally processed image forming material is excellent in the coated surface quality, and can afford an image which is low in fog and high in Dmax (maximum density).
    Type: Grant
    Filed: July 14, 2000
    Date of Patent: August 31, 2004
    Assignee: Fuji Photo Film Co., LTD
    Inventor: Shoji Yasuda
  • Publication number: 20040142288
    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 said photographic element has an ISO speed rating of 800 or greater and has an integrated RMS green granularity equal to or less than 11.2.
    Type: Application
    Filed: January 17, 2003
    Publication date: July 22, 2004
    Inventors: James A. Friday, Roger A. Weiss, Anabisdally I. Bodden
  • Patent number: 6764816
    Abstract: The present invention provides a thermally developable photosensitive material including a support, the image-forming layer containing a non-photosensitive organic silver salt, a photosensitive silver halide, a reducing agent, a binder and a compound represented by the following formula (I), wherein after the material is exposed and thermally developed at 121° C.
    Type: Grant
    Filed: March 22, 2002
    Date of Patent: July 20, 2004
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Tomoyuki Ohzeki
  • Publication number: 20040137382
    Abstract: Thermally developable compositions such thermographic and photothermographic emulsions include certain triazine-thione compounds. These emulsions can be used in thermally developable materials such as thermographic and photothermographic materials to provide increased image density and shortened development time, and to allow development at lower temperatures. Such materials can have imaging layers on one or both sides of the support.
    Type: Application
    Filed: December 11, 2003
    Publication date: July 15, 2004
    Inventors: Doreen C. Lynch, Stacy M. Ulrich, Paul G. Skoug
  • Publication number: 20040137388
    Abstract: A substantially light-insensitive black and white monosheet thermographic recording material comprising a support and a thermosensitive element, said thermosensitive element containing a substantially light-insensitive organic silver salt, an organic reducing agent therefor in thermal working relationship therewith, a binder and at least one 2-mercapto-benzothiazole compound represented by formula (I): 1
    Type: Application
    Filed: November 10, 2003
    Publication date: July 15, 2004
    Applicant: AGFA-GEVAERT
    Inventors: Ingrid Geuens, Johan Loccufier