Patents by Inventor Kouta Fukui

Kouta Fukui has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20070003882
    Abstract: The present invention provides a photothermographic material comprising a substrate and a composition provided thereon. The composition includes a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent for thermal development and a binder. Each of organic compounds comprised in an amount of approximately 0.05 g/m2 or more in the composition has a volatilization remaining ratio of 50% or more at 160° C. The photothermographic material preferably comprises, as a color tone adjuster, a combination of a phthalazine acid and a phthalic acid compound each having a specific structure. The invention further provides a method for producing the imaged photothermographic material. In the production of this material, a thermal developing device having a filter for collecting volatilized material is used.
    Type: Application
    Filed: September 10, 2003
    Publication date: January 4, 2007
    Inventor: Kouta Fukui
  • Patent number: 7153646
    Abstract: A photothermographic material having, on at least an image forming layer including at least an organic silver salt and a non-photosensitive layer on the image forming layer, wherein the photothermographic material further has a non-photosensitive intermediate layer between the image forming layer and the non-photosensitive layer, and 50% by weight or more of a binder of the non-photosensitive intermediate layer is formed by a polymer latex, and the photothermographic material contains a metal phthalocyanine dye represented by formula (PC-1): wherein, M represents a metal atom, at least one of R1, R4, R5, R8, R9, R12, R13, and R16 is an electron-attracting group, and R2, R3, R6, R7, R10, R11, R14, and R15 each independently represent a hydrogen atom or a substituent. The invention provides a photothermographic material which exhibits high sharpness, preferable image tone, and excellent image storability.
    Type: Grant
    Filed: October 19, 2005
    Date of Patent: December 26, 2006
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Kouta Fukui, Seiichi Yamamoto, Keiichi Suzuki
  • Patent number: 7148000
    Abstract: The present invention is directed to a heat-developable photosensitive material and an image-forming process using the heat-developable photosensitive material. The material generally includes at least one photosensitive silver halide, a reducing agent for silver ions, a binder, and non-photosensitive organic silver salt particles on one surface of a support. The non-photosensitive organic silver salt particles are specified and the reducing agent is specified. The material may include specific non-photosensitive organic silver salt particles and a development accelerator.
    Type: Grant
    Filed: April 22, 2002
    Date of Patent: December 12, 2006
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Takayoshi Oyamada, Kouta Fukui, Toyohisa Oya
  • Patent number: 7132229
    Abstract: A photothermographic material having an image forming layer containing at least a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent, and a binder, and a non-photosensitive layer on at least one side of a support, in which the binder is a hydrophilic binder, the non-photosensitive layer contains gelatin or a gelatin derivative, the reducing agent is a compound represented by the following formula (R), and at least one compound represented by the following formula (I) or (II) is contained: (wherein in formula (R), R11 and R11? each independently represent an alkyl group and at least one of R11 and R11? is a secondary or tertiary alkyl group); (wherein in the formula (I), Q represents an atomic group necessary for forming a 5 or 6-membered imide ring); and (wherein in the formula (II), R5 independently represents a hydrogen atom or a substituent, r represents 0, 1, 2, 3 or 4, and X represents O, S, Se or N(R6)).
    Type: Grant
    Filed: July 13, 2005
    Date of Patent: November 7, 2006
    Assignee: Fuji Photo Film Co., Ltd
    Inventor: Kouta Fukui
  • Publication number: 20060216661
    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 for silver ions, and a binder, wherein the photothermographic material includes a compound represented by the following formula (I) and a coupler which reacts with an oxidation product of the compound represented by formula (I) to form a dye, and a density obtained by the dye at a maximum absorption wavelength of the dye is from 0.005 to 0.5 when an image density is from 1.1 to 1.3: A photothermographic material which exhibits excellent image tone and excellent storage stability is provided.
    Type: Application
    Filed: March 17, 2006
    Publication date: September 28, 2006
    Inventors: Kouta Fukui, Yasuhiro Yoshioka
  • Publication number: 20060172234
    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: Application
    Filed: January 25, 2006
    Publication date: August 3, 2006
    Inventor: Kouta Fukui
  • Publication number: 20060127826
    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: Application
    Filed: November 7, 2005
    Publication date: June 15, 2006
    Inventor: Kouta Fukui
  • Publication number: 20060115776
    Abstract: A photothermographic material having, on at least an image forming layer including at least an organic silver salt and a non-photosensitive layer on the image forming layer, wherein the photothermographic material further has a non-photosensitive intermediate layer between the image forming layer and the non-photosensitive layer, and 50% by weight or more of a binder of the non-photosensitive intermediate layer is formed by a polymer latex, and the photothermographic material contains a metal phthalocyanine dye represented by formula (PC-1): wherein, M represents a metal atom, at least one of R1, R4, R5, R8, R9, R12, R13, and R16 is an electron-attracting group, and R2, R3, R6, R7, R10, R11, R14, and R15 each independently represent a hydrogen atom or a substituent. The invention provides a photothermographic material which exhibits high sharpness, preferable image tone, and excellent image storability.
    Type: Application
    Filed: October 19, 2005
    Publication date: June 1, 2006
    Inventors: Kouta Fukui, Seiichi Yamamoto, Keiichi Suzuki
  • Publication number: 20060057508
    Abstract: An image forming method using a photothermographic material including, on at least one side of a support, an image forming layer containing at least a photosensitive silver halide, a first non-photosensitive organic silver salt, a reducing agent, and a binder, and at least one non-photosensitive layer disposed on the same side as the image forming layer and farther from the support than the image forming layer, wherein the non-photosensitive layer contains a second organic silver salt which is different from the first non-photosensitive organic silver salt, and the photothermographic material is thermally developed for 3 seconds to 20 seconds after imagewise exposure. An image forming method with excellent resistance to stain before exposure, raw stock storability, and resistance to defects after processing is provided.
    Type: Application
    Filed: September 9, 2005
    Publication date: March 16, 2006
    Inventors: Kouta Fukui, Takayoshi Oyamada
  • Publication number: 20060019207
    Abstract: A photothermographic material having an image forming layer containing at least a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent, and a binder, and a non-photosensitive layer on at least one side of a support, in which the binder is a hydrophilic binder, the non-photosensitive layer contains gelatin or a gelatin derivative, the reducing agent is a compound represented by the following formula (R), and at least one compound represented by the following formula (I) or (II) is contained: (wherein in formula (R), R11 and R11? each independently represent an alkyl group and at least one of R11 and R11? is a secondary or tertiary alkyl group); (wherein in the formula (I), Q represents an atomic group necessary for forming a 5 or 6-membered imide ring); and (wherein in the formula (II), R5 independently represents a hydrogen atom or a substituent, r represents 0, 1, 2, 3 or 4, and X represents O, S, Se or N(R6)).
    Type: Application
    Filed: July 13, 2005
    Publication date: January 26, 2006
    Inventor: Kouta Fukui
  • Publication number: 20050202356
    Abstract: The invention provids a black-and-white photothermographic material comprising a support and an image-forming layer containing a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent for silver ions, and a binder on one side of the support, wherein a hydrophilic binder constitutes 50 mass % or more of the binder. The non-photosensitive organic silver salt contains at least one kind selected from the group consisting of a silver salt of a nitrogen-containing heterocyclic compound and a silver salt of a mercapto compound. The photothermographic material comprises a fluorine compound having a fluorinated alkyl group with at least 2 carbon atoms and at most 12 fluorine atoms.
    Type: Application
    Filed: March 7, 2005
    Publication date: September 15, 2005
    Inventor: Kouta Fukui
  • Publication number: 20050202353
    Abstract: A photothermographic material wherein at least an image-forming layer on at least one surface of a support, the image-forming layer containing a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent, and a binder, wherein, an outermost layer is provided as a layer most remote from the support on the side of the support where the image-forming layer is provided, a non-photosensitive intermediate layer A containing a binder and provided in adjacent with the image-forming layer and between the imag-forming layer and the outermost layer, wherein the binder of the non-photosensitive intermediate layer A contains 80% by mass or more of a polymer formed by copolymerizing a monomer represented by Formula (M), a non-photosensitive intermediate layer B containing a binder and provided between the non-photosensitive intermediate layer A and the outermost layer, and the binder of the non-photosensitive intermediate layer B contains 50% by mass or more of a hydrophilic polymer derived fr
    Type: Application
    Filed: March 4, 2005
    Publication date: September 15, 2005
    Inventors: Keiichi Suzuki, Kouta Fukui, Minoru Sakai
  • 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
  • Publication number: 20040224250
    Abstract: An image forming method for forming an image with laser irradiation on a photothermographic material including transporting the photothermographic material in a sub scanning direction and guiding it to a thermal developing portion, wherein the photothermographic material comprises at least one compound selected from formulae (1a), (1b) and (1c), and the method satisfies one of the following conditions:
    Type: Application
    Filed: March 3, 2004
    Publication date: November 11, 2004
    Inventors: Minoru Sakai, Eiichi Okutsu, Katsuyuki Watanabe, Kouta Fukui, Katsutoshi Yamane
  • Publication number: 20040202972
    Abstract: The invention provides a photothermographic material comprising, on a surface of a substrate, a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent and a binder, a halogen compound represented by the following formula (A), and a development accelerator.
    Type: Application
    Filed: April 7, 2004
    Publication date: October 14, 2004
    Inventor: Kouta Fukui
  • Publication number: 20040146819
    Abstract: A photothermographic material, including a support; an image forming layer provided on the support and containing a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent, and a binder; and a silver-saving agent. Silver iodide is contained in the photosensitive silver halide in an amount of 40 to 100 mol %.
    Type: Application
    Filed: January 14, 2004
    Publication date: July 29, 2004
    Inventor: Kouta Fukui
  • Publication number: 20040137389
    Abstract: The invention is a heat-developable light-sensitive material having, on a face of a support thereof, a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent and a binder. In first and second aspects, the silver iodide content of the silver halide is from 5 mol % to 100 mol %, and the material contains a compound (eg. silver iodide complex-forming agent) capable of substantially lowering through heat development a spectral absorption intensity derived from the silver halide in visible and ultraviolet regions. In the first aspect, the silver halide is photosensitive silver halide grains having a mean diameter of 0.001 to 0.08 &mgr;m. In its second aspect, the material is exposed to light shorter than 700 nm.
    Type: Application
    Filed: December 16, 2003
    Publication date: July 15, 2004
    Inventors: Kouta Fukui, Toyohisa Oya
  • Publication number: 20040115573
    Abstract: A photothermographic material containing a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent, and a binder on at least one surface of a support, wherein silver iodide is contained in the photosensitive silver halide in an amount of 40% to 100% by mole, and the reducing agent contains a compound represented by the following formula (R-1).
    Type: Application
    Filed: December 9, 2003
    Publication date: June 17, 2004
    Inventor: Kouta Fukui
  • Publication number: 20040053174
    Abstract: The present invention provides a photothermographic material comprising a substrate and a composition provided thereon. The composition includes a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent for thermal development and a binder. Each of organic compounds comprised in an amount of approximately 0.05 g/m2 or more in the composition has a volatilization remaining ratio of 50% or more at 160° C. The photothermographic material preferably comprises, as a color tone adjuster, a combination of a phthalazine acid and a phthalic acid compound each having a specific structure. The invention further provides a method for producing the imaged photothermographic material. In the production of this material, a thermal developing device having a filter for collecting volatilized material is used.
    Type: Application
    Filed: September 10, 2003
    Publication date: March 18, 2004
    Inventor: Kouta Fukui
  • Patent number: 6682878
    Abstract: A thermal development photosensitive material suitable for medical diagnoses, industrial photography, printing and COM. The material contains at least one photosensitive silver halide, a non-photosensitive organic silver salt, a binder, at least one of compounds represented by the following formula (I) and at least one of compounds represented by the following formula (II) on one surface of a substrate. The material has high sensitivity and provides an image with a tone close to a pure black tone.
    Type: Grant
    Filed: December 5, 2001
    Date of Patent: January 27, 2004
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Kouta Fukui, Yasuhiro Yoshioka