Stabilizing Or Fog Inhibiting Ingredient Containing Patents (Class 430/607)
  • Patent number: 8034542
    Abstract: An electromagnetic shielding film for plasma display which is excellent in electromagnetic shielding characteristics for effectively shielding electromagnetic waves, near infrared rays, stray light, external light, and the like and even when stored under a wet heat condition, is small in change of color tint and good in adhesion, with a blackening layer hardly peeled away, is provided by a transparent electromagnetic shielding film including a transparent support having thereon a conductive metal layer in a pattern-like state having an electromagnetic shielding ability and having a surface covered by a blackening layer, with the blackening layer made of an alloy of nickel and zinc in a nickel/zinc mass ratio of from 0.5 to 50.
    Type: Grant
    Filed: March 28, 2007
    Date of Patent: October 11, 2011
    Assignee: FUJIFILM Corporation
    Inventors: Hirotomo Sasaki, Jun Matsumoto, Takayasu Yamazaki, Akimitsu Haijima, Yoshihiro Fujita
  • Patent number: 7977040
    Abstract: The present invention provides a heat developable photosensitive material comprising at least a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent for silver ions and binder on one surface of a support.
    Type: Grant
    Filed: October 16, 2002
    Date of Patent: July 12, 2011
    Assignee: Fujifilm Corporation
    Inventors: Yasuhiro Yoshioka, Takayoshi Oyamada, Eiichi Okutsu
  • 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: 7462444
    Abstract: An image forming method comprising: imagewise exposing and thermal developing a photothermographic material using an image recording apparatus, wherein a part of the sheet is exposed and, in parallel with the exposure, development is started on a part of the sheet having been already exposed: wherein the photothermographic material comprises a reducing agent represented by formula (R), and wherein the photosensitive silver halide contains at least two preformed photosensitive silver halides having respective sensitivities different from each other for a light with the same exposure wavelength and a silver iodide content of the photosensitive silver halide is 40% by mole or more.
    Type: Grant
    Filed: November 7, 2005
    Date of Patent: December 9, 2008
    Assignee: FUJIFILM Corporation
    Inventors: Yutaka Oka, Tomoyuki Ohzeki
  • 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: 7452661
    Abstract: Incorporation of certain compounds into photothermographic materials provides materials with reduced initial image Dmin and improved Raw Stock Keeping film stability without unacceptable loss in sensitometric properties. These compounds include certain e-i) zinc salts of an aryl sulfonic acid or of a fluorinated C2-C6 carboxylic acid, e-ii) non-encapsulated alkali metal salts of an aryl sulfonic acid or of a fluorinated C2-C6 carboxylic acid, and e-iii) fluorinated C2-C6 carboxylic acids.
    Type: Grant
    Filed: February 26, 2007
    Date of Patent: November 18, 2008
    Assignee: Carestream Health, Inc.
    Inventors: Kui Chen-Ho, William D. Ramsden
  • Patent number: 7429447
    Abstract: A photothermographic material having, on at least one side of a support, an image forming layer including at least a photosensitive silver halide, a non-photosensitive silver salt of a fatty acid, a reducing agent, and a binder, wherein 1) the photosensitive silver halide has an average silver iodide content of 40 mol % or higher, and 2) the photothermographic material includes a compound represented by the following formula (I) or a salt thereof: R1—C?C—R1???Formula (I) wherein R1 and R1? each independently represent a hydrogen atom, or a substituted or unsubstituted alkyl group, aryl group, or heterocyclic group, and R1 and R1? are not simultaneously a hydrogen atom. The invention provides a photothermographic material which exhibits high sensitivity and excellent image storability, and an image forming method.
    Type: Grant
    Filed: January 27, 2006
    Date of Patent: September 30, 2008
    Assignee: FUJIFILM Corporation
    Inventor: Katsuhisa Ohzeki
  • Patent number: 7402380
    Abstract: A photothermographic material having, on at least one side of a support, an image forming layer including at least a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent, and a binder, wherein 1) the binder includes a polymer latex having a monomer component represented by formula (M): CH2?CR01—CR02?CH2??Formula (M) 2) the photothermographic material includes a compound represented by formula (SA): and 3) the photothermographic material further includes a metal phthalocyanine dye represented by formula (PC-1): wherein at least one of R1, R4, R5, R8, R9, R12, R13, and R16 is an electron-attracting group. The invention provides a photothermographic material which produces an image free from unevenness in color tone, having high image quality, and is excellent in image storability.
    Type: Grant
    Filed: January 25, 2006
    Date of Patent: July 22, 2008
    Assignee: FUJIFILM Corporation
    Inventor: Kouta Fukui
  • 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: 7303863
    Abstract: A silver halide emulsion, which is chemically sensitized by a compound of formula (1): wherein Ch represents a sulfur, selenium, or tellurium atom; X1 represents NR1 or N+(R2)R3Y?; R1 represents a hydrogen atom or a substituent; R2 and R3 each represent an alkyl group or another substituent; Y? represents an anionic ion; X2 represents OR4, N(R5)R6, or another substituent; R4 to R6 each represent a hydrogen atom or a substituent; and E is a group selected from groups represented by formula (2) to (5): wherein, in formulas (2) to (5), Z represents a hydrogen atom or a substituent; A1 and A2 each represent an oxygen atom, etc.; and R10 to R16 each represent a hydrogen atom or a substituent; W represents a substituent; n is an integer from 0 to 4; L represents a divalent linking group; and EWG represents an electron withdrawing group.
    Type: Grant
    Filed: February 17, 2006
    Date of Patent: December 4, 2007
    Assignee: FUJIFILM Corporation
    Inventors: Hiroyuki Suzuki, Toshihiro Kariya
  • 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: 7241563
    Abstract: A silver halide color photographic light-sensitive material having a silver halide emulsion layer, and (1) a substantially light-insensitive dye-forming-coupler-containing layer, and (2) at least one layer selected from a non-color-forming intermediate layer containing a color-mixing inhibitor and a non-color-forming intermediate layer substantially free of color-mixing inhibitor, wherein i) when the light-insensitive dye-forming-coupler-containing layer is included, the layer is positioned adjacent to the silver halide emulsion layer, and ii) when the non-color-forming intermediate layer containing a color-mixing inhibitor and the non-color-forming intermediate layer substantially free of color-mixing inhibitor are included, these layers are positioned adjacent to each other.
    Type: Grant
    Filed: November 8, 2004
    Date of Patent: July 10, 2007
    Assignee: FUJIFILM Corporation
    Inventors: Mamoru Sakurazawa, Jun Arakawa
  • Patent number: 7229750
    Abstract: A silver halide emulsion chemically sensitized by a compound of formula (1), (6-1), (6-2) or (7); and a silver halide photographic light-sensitive material containing the silver halide emulsion: Formula (1) E1-Ch-E2 Formula (6-1) W1 . . . AuX2m Formula (6-2) [W1 . . . Au . . . W2]X2m Formula (7) E5-Ch-Au . . . (L2)1 wherein Ch is a sulfur, selenium or tellurium atom; E1, E2, and E5 each are, for example, a specific methylene group having a substituent; Au is a monovalent or trivalent gold ion; W1 and W2 each are a specific chalcogen compound; X2 is a monovalent anion; m is 1, 2 or 3; L2 is a compound that can coordinate with gold through a nitrogen, sulfur, selenium, tellurium or phosphorous atom; and l is 0, 1, 2 or 3.
    Type: Grant
    Filed: August 26, 2004
    Date of Patent: June 12, 2007
    Assignee: Fujifilm Corporation
    Inventors: Hiroyuki Suzuki, Masami Sakurada, Toshihiro Kariya
  • Patent number: 7220537
    Abstract: This invention provides a silver halide emulsion, a silver halide photographic material and an image forming method, which is excellent in high sensitivity, good gradation, coating composition store stability and latent image store stability regardless exposing method, particularly excellent latent image store stability at high intensity and shot period exposure of digital exposure, and by which a high quality print is obtained. The silver halide emulsion contains silver halide grains having silver chloride content of at least 90 mol %, silver iodide content of 0-2.0 mol %, and silver bromide content of 0.02-5.
    Type: Grant
    Filed: January 31, 2003
    Date of Patent: May 22, 2007
    Assignee: Konica Minolta Photo Imaging, Inc.
    Inventors: Toshiya Kondo, Shuji Murakami, Koichiro Kuroda
  • Patent number: 7192694
    Abstract: A photothermographic material containing, on a substrate, at least a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent and a binder in which the total silver iodide content of the photosensitive silver halide is 40 mol % or more and 100 mol % or less, and the coating amount of the photosensitive silver halide, in terms of an amount of silver, is 0.0005 g/m2 or more and 0.4 g/m2 or less, as well as an image forming method for the photothermographic material which comprises exposing the photothermographic material by using a semiconductor laser having an emission peak intensity at a wavelength of from 350 nm to 450 nm as a light source.
    Type: Grant
    Filed: November 7, 2003
    Date of Patent: March 20, 2007
    Assignee: Fujifilm Corporation
    Inventor: Fumito Nariyuki
  • Patent number: 7189501
    Abstract: A silver halide color photographic photosensitive material that has, on a support, at least one yellow color-forming photosensitive silver halide emulsion layer, at least one magenta color-forming photosensitive silver halide emulsion layer, and at least one cyan color-forming photosensitive silver halide emulsion layer, wherein at least one specific yellow or magenta dye-forming coupler and at least one compound represented by formula (Ph) are contained in the same layer: wherein Rb1 represents a specific functional group; and Rb2 to Rb5 each independently represent a hydrogen or halogen atom, or a specific functional group.
    Type: Grant
    Filed: December 29, 2003
    Date of Patent: March 13, 2007
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Toshiyuki Makuta, Hiroyuki Yoneyama, Nobuo Seto, Kiyoshi Takeuchi
  • 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: 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: 7144695
    Abstract: The invention relates to a photothermographic material, comprising a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent, and a binder on a same surface of a support, wherein the non-photosensitive organic silver salt is the non-photosensitive organic silver salt in a dispersion that has been subjected to an annealing treatment at 30° C. or more.
    Type: Grant
    Filed: June 4, 2003
    Date of Patent: December 5, 2006
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Takayoshi Oyamada
  • 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: 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: 7112398
    Abstract: This invention relates to an imaging element comprising an imaging layer having associated therewith a compound of Structure I: wherein: the substituents are as defined in the application.
    Type: Grant
    Filed: January 9, 2004
    Date of Patent: September 26, 2006
    Assignee: Eastman Kodak Company
    Inventors: Wojciech K. Slusarek, Xiqiang Yang, Mark E. Irving, David H. Levy, Jared B. Mooberry, James J. Seifert, James H. Reynolds, Lyn M. Irving
  • Patent number: 7105288
    Abstract: A photothermographic material is disclosed, comprising on a support a light-sensitive emulsion containing a light-insensitive organic silver salt and a light-sensitive silver halide, a reducing agent for silver ions and a binder, wherein the photothermographic material further comprises a compound represented by the following formula (A-1) or (B) and a compound represented by the following formula (A-2)
    Type: Grant
    Filed: August 13, 2003
    Date of Patent: September 12, 2006
    Assignee: Konica Corporation
    Inventors: Kiyokazu Morita, Ayumu Nishijima
  • Patent number: 7105286
    Abstract: The present invention relates to a silver halide photographic material comprising a paper support having resin layers coated on both sides of a base paper, and in particular, to a silver halide photographic material exhibiting superior glossiness and improved sharpness, long-term stability, fingerprint resistance and pressure resistance. The silver halide photographic material comprising on one side of the paper support having resin coat layers on both sides of a base paper, one or more light-sensitive layers and one or more light-insensitive layers, wherein after the photographic material of an L-size (having a length of 89 mm in a machine direction of the base paper and a length of 127 mm vertical to the machine direction) is processed, the photographic material exhibits an image clarity (C-value) of 20% to 60% which is determined using a 1.
    Type: Grant
    Filed: November 20, 2002
    Date of Patent: September 12, 2006
    Assignee: Konica Minolta Photo Imaging, Inc.
    Inventor: Takesi Nakamura
  • 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: 7090969
    Abstract: A photographic element comprises a silver halide emulsion layer having associated therewith a dye forming coupler and a compound of the following Formula I1: wherein L is a linking moiety; X is a heteroatom group selected from O, S, or NR? where R? is H or a substituent; w is 0 or 1; R is hydrogen or a substituent group; n is an integer from 0 to 5; and ST represents a stabilizer selected from the group consisting of: A. a thiomorpholine dioxide; B. a dialkoxy aromatic group linked through a phenolic oxygen; C. a dialkoxy aromatic group linked through the aromatic ring; D. a sulfonamido group; E. a hydroxyphenyl benzotriazole group; and F. a phenolic group.
    Type: Grant
    Filed: March 15, 2005
    Date of Patent: August 15, 2006
    Assignee: Eastman Kodak Company
    Inventors: Albert J. Mura, Shari L. Eiff, Gary M. Russo
  • Patent number: 7087366
    Abstract: A photothermographic emulsion is prepared by chemically sensitizing silver halide grains formed by oxidative decomposition of a diphenylphosphine sulfide compound on or around the silver halide grains. This procedure uses a unique sequence of steps and provides increased photographic speed and manufacturing reproducibility.
    Type: Grant
    Filed: December 9, 2003
    Date of Patent: August 8, 2006
    Assignee: Eastman Kodak Company
    Inventors: Lilia P. Burleva, Kumars Sakizadeh, David R. Whitcomb, Sharon M. Simpson
  • 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: 7060425
    Abstract: A color photographic material is described containing a compound of formula (I) wherein, if n=1, R1 is, inter alia, a radical of formula (II), and, if n=2, R1 is unsubstituted or C1–C4alkyl- or hydroxy-substituted phenylene or naphthylene; or —R12—X—R13—, and other residues are as defined in claim 1. The compound of formula (I) is effective as scavenger of the oxidized form of the developer (Dox scavenger), especially when contained in an interlayer between light sensitive layers. Selected compounds of this class can also be used as additives, for example as dye stabilizer, in color photographic materials, or as an antioxidant for organic materials.
    Type: Grant
    Filed: October 11, 1999
    Date of Patent: June 13, 2006
    Assignee: Ciba Specialty Chemicals Corp.
    Inventors: Suruliappa Gowper Jeganathan, Stéphan Biry, Peter Nesvadba, David George Leppard
  • Patent number: 7052828
    Abstract: The present invention provides a photothermographic material including at least a photosensitive silver halide, a non-photosensitive silver-supplying compound, a reducing agent and a binder on at least one surface of a support. The photothermographic material further includes at least one kind of halogen releasing compound having a water-solubilizing group and at least one kind of halogen releasing compound having no water-solubilizing group, and a gradation of a characteristic curve is 2.5 to 4.0. The photothermographic material of the invention is excellent in storability, and particularly excellent in storability of high quality images used for image recording for medical diagnosis.
    Type: Grant
    Filed: September 14, 2004
    Date of Patent: May 30, 2006
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Yasuhiro Yoshioka
  • 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: 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: 6974663
    Abstract: A photographic element is described comprising a support bearing one or more hydrophilic colloid layers including at least one photographic silver halide emulsion layer, wherein a photographically useful compound is incorporated into at least one hydrophilic colloid layer in the form of an intercalation composition comprising a layered host material having molecules of the photographically useful compound inserted as guest molecules between the layers of the host material. The invention provide novels materials and a method of incorporating active chemistry compounds such as developers or development inhibitors directly into a photographic imaging element with improved stability and keeping response versus known methods for incorporating active chemistry compounds.
    Type: Grant
    Filed: December 21, 2001
    Date of Patent: December 13, 2005
    Assignee: Eastman Kodak Company
    Inventors: Joseph F. Bringley, Krishnamohan Sharma, Kenneth J. Lushington
  • Patent number: 6974662
    Abstract: Improved compounds and base precursors that undergo thermal decomposition are disclosed. Thermal base precursors, and in particular, a novel class of salts of arylsulfonylacetic acids as bleaching agents or promoting for photothermographic use are disclosed. Compositions employing these thermal base precursors are suitable for use in acutance and antihalation systems, bleachable filter dye materials, and in promoting unblocking of various components such as blocked developers, especially in photothermographic elements.
    Type: Grant
    Filed: August 4, 2003
    Date of Patent: December 13, 2005
    Assignee: Eastman Kodak Company
    Inventors: Ramanuj Goswami, Wojciech K. Slusarek, David H. Levy
  • 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: 6933102
    Abstract: A silver halide photographic light-sensitive material is disclosed, comprising at least one silver halide emulsion characterized in that 50% or more of the projected area of all silver halide grains comprises tabular silver halide grains satisfying all of the following requirements (i) to (iii) and the coefficient of variation in the thickness of the tabular silver halide grains is less than 40%: (i) to have a grain thickness of less than 0.05 ?m and an equivalent-circle diameter of 0.6 ?m or more; (ii) to be silver iodobromide or silver chloroiodobromide having a silver bromide content of 70 mol % or more; (iii) to be a tabular silver halide grain having two parallel main planes comprising a (111) face.
    Type: Grant
    Filed: September 26, 2001
    Date of Patent: August 23, 2005
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Kazutaka Takahashi, Terukazu Yanagi
  • 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: 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: 6887657
    Abstract: A silver halide color photographic photosensitive material, which containes at least one specific compound containing at least one alkenylcarbonyl group, in at least one layer on a support; and an image-forming method using the same.
    Type: Grant
    Filed: May 11, 2004
    Date of Patent: May 3, 2005
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Nobuo Seto, Toshiyuki Makuta, Hidekazu Sakai, Hiroyuki Yoneyama, Tomonori Ichinose
  • Patent number: 6824962
    Abstract: Disclosed is a photothermographic material containing at least a photosensitive silver halide, a non-photosensitive silver salt of an organic acid, a reducing agent for silver ions and a binder on one surface of a support, wherein the material contains a compound producing imagewise a chemical species that can form development initiation points on and in the vicinity of the non-photosensitive silver salt of an organic acid or the like and an organic gold compound and the photosensitive silver halide has a mean grain size of 0.12 &mgr;m or less. This photothermographic material shows high sensitivity, low fog, high Dmax (maximum density), little increase of fog during storage and low temperature and humidity dependency during development.
    Type: Grant
    Filed: January 29, 2002
    Date of Patent: November 30, 2004
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Tokuju Oikawa
  • Patent number: 6821721
    Abstract: A photothermographic material comprising: a substrate; and a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent and a binder, in a same region defined by the substrate, wherein the photothermographic material further comprises a fluorine compound which comprises at least one fluoroalkyl group having 2 or more of carbon atoms and not more than 13 of fluorine atoms and at least one of anionic and nonionic hydrophilic groups, and 40 to 98% by mol of the non-photosensitive organic silver salts are silver behenate.
    Type: Grant
    Filed: April 16, 2003
    Date of Patent: November 23, 2004
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Yasuhiro Yoshioka
  • Patent number: 6808871
    Abstract: A silver halide emulsion is disclosed, comprising silver halide grains, wherein at least 50% of total grain projected area is accounted for by tabular grains having an aspect ratio of 10 to 100 and at least 50% by number of total grains is accounted for by tabular grains having at least 30 dislocation lines per grain in the fringe portion of the grain, and the emulsion contains a compound having a function of permitting injection of at least two electrons into silver halide via photoexcitation by a single photon.
    Type: Grant
    Filed: October 8, 2002
    Date of Patent: October 26, 2004
    Assignee: Konica Corporation
    Inventors: Katsuhiko Suzuki, Yoshiko Iwai
  • 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