Patents by Inventor Yoshiharu Yabuki

Yoshiharu Yabuki 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).

  • Inkjet ink, inkjet recording method and color toner composition
    Publication number: 20050074684
    Abstract: A coloring composition such as printing ink for inkjet printing or the like or electrophotographic color toner is provided, which can give a colored image or material excellent in the color hue and fastness, and also provide an inkjet recording method capable of forming an image having good color hue and high fastness to light and active gases in the environment, particularly ozone gas, and which is an inkjet ink comprising an azo dye having a specific structure containing an alkyl chain having 4 to more carbon atoms and not containing an ionic hydrophilic group; an inkjet recording method using the ink; and a color toner composition comprising the above-described azo dye.
    Type: Application
    Filed: January 7, 2004
    Publication date: April 7, 2005
    Inventors: Yoshiharu Yabuki, Tomohiro Chino, Toshiki Fujiwara
  • Optical filter having filter layer containing infrared absorbing dye and ultraviolet absorbing agent
    Patent number: 6875512
    Abstract: An optical filter comprises a transparent support and a filter layer. The filter layer contains a dye and a binder polymer. The dye is in an aggregated form exhibiting an absorption maximum in the wavelength region of 750 to 1,100 nm.
    Type: Grant
    Filed: October 17, 2001
    Date of Patent: April 5, 2005
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Yoshiharu Yabuki
  • Ink compositions for inkjet recording
    Patent number: 6835240
    Abstract: An ink composition for inkjet recording comprising: an azo dye having an aromatic nitrogen-containing 6-membered heterocycle as a coupling component; an aqueous medium; and a surfactant, wherein the azo dye is dissolved or dispersed in the aqueous medium.
    Type: Grant
    Filed: July 3, 2002
    Date of Patent: December 28, 2004
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Nobuhiro Nishita, Yoshiharu Yabuki, Junichi Yamanouchi
  • Photothermographic material
    Patent number: 6830879
    Abstract: Disclosed is a photothermographic material having a support, at least one photosensitive layer containing a silver halide and a reducing agent and a non-photosensitive layer containing aggregates of a dye, wherein a transmission absorption spectrum of the aggregates has a maximum absorption wavelength within the range of 600-750 nm. The photothermographic material is easy to handle and provide an image having sufficient definition without residual color after development. The photothermographic material is suitable for light exposure with a red laser.
    Type: Grant
    Filed: August 2, 2002
    Date of Patent: December 14, 2004
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Ryo Suzuki, Keiichi Suzuki, Yoshiharu Yabuki
  • Photosensitive material comprising reversibly decolorable colored layer and image-forming method using same
    Patent number: 6828070
    Abstract: A photosensitive material comprising a substrate and a reversibly decolorable colored layer disposed thereon, wherein the reversibly decolorable colored layer is reversibly colored and decolored, the reversibly decolorable colored layer is in a colored state at 25 ° C., and a temperature at which the color density of the reversibly decolorable colored layer is reduced to 50% based on that at 25 ° C. is 50 to 120 ° C. A method for forming an image using the photosensitive material is also provided.
    Type: Grant
    Filed: June 22, 2001
    Date of Patent: December 7, 2004
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Shunichi Ishikawa, Yoshiharu Yabuki
  • Cellulose acetate film
    Publication number: 20040233363
    Abstract: An optical compensatory sheet comprises a cellulose acetate support and an optically anisotropic layer. The optically anisotropic layer contains a discotic liquid crystal molecule. The cellulose acetate support has a Bth550 birefringence in the range of 0.0007 to 0.004.
    Type: Application
    Filed: September 29, 2003
    Publication date: November 25, 2004
    Applicant: FUJI PHOTO FILM CO., LTD.
    Inventors: Masahiko Murayama, Yosuke Nishiura, Yoshiharu Yabuki, Hiroyuki Mori
  • Moisture/wetness detecting method, moisture/wetness detecting label, articles with moisture/wetness detecting function, and detecting material and method
    Patent number: 6815207
    Abstract: A method of detecting moisture or wetness which enables determination as to whether or not precision instruments or industrial products have undergone improper conditions, is described, which comprises: (i) use of a composite material which contains at least one water-soluble decoloring agent and at least one methine dye whose color disappears upon reaction with the decoloring agent in a state that the decoloring agent and the dye are spatially isolated from each other, and (ii) detection of a history of contact with moisture or water by disappearance of color from the composite material.
    Type: Grant
    Filed: September 21, 2001
    Date of Patent: November 9, 2004
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Yoshiharu Yabuki, Akio Ishizuka
  • Ink for ink jet recording, method of producing ink for ink jet recording, and ink jet recording method
    Patent number: 6800673
    Abstract: An ink for ink jet recording which inclides a water-insoluble ionic group-containing polymer added to a colored fine particle dispersion containing at least a hydrophobic high-boiling organic solvent having a boiling point of 150° C. or more and an oil-soluble dye. In a preferred embodiment, the water-insoluble ionic group-containing polymer is converted by emulsification dispersion into a fine particle dispersion and added to the colored fine particle dispersion, and the oil-soluble dye is represented by specific formulae.
    Type: Grant
    Filed: August 7, 2001
    Date of Patent: October 5, 2004
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Junichi Yamanouchi, Takahiro Ishizuka, Yoshiharu Yabuki
  • Optical compensatory sheet comprising cellulose acetate support and optically anisotropic layer, an ellipsoidal polarizing plate, and a liquid crystal display
    Patent number: 6778242
    Abstract: An optical compensatory sheet comprises a cellulose acetate support and an optically anisotropic layer. The optically anisotropic layer contains a discotic liquid crystal molecule. The cellulose acetate support has a Bth550 birefringence in the range of 0.0007 to 0.004.
    Type: Grant
    Filed: December 22, 1999
    Date of Patent: August 17, 2004
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Masahiko Murayama, Yosuke Nishiura, Yoshiharu Yabuki, Hiroyuki Mori
  • Azo compound and process of producing the same, and novel compound and process of producing azo compounds using the same
    Publication number: 20040122219
    Abstract: A compound represented by the following formula (I) or formula (2-I) 1
    Type: Application
    Filed: September 30, 2003
    Publication date: June 24, 2004
    Inventors: Toshiki Fujiwara, Naoyuki Hanaki, Shigeaki Tanaka, Tadashi Omatsu, Yoshiharu Yabuki
  • Photothermographic material and image formation method utilizing the same
    Patent number: 6749999
    Abstract: Disclosed is a photothermographic material comprising a support, a photosensitive layer containing a silver halide having a silver iodide content of 10 mol % or more and a reducing agent and a non-photosensitive layer provided on the support, wherein at least one of the photosensitive layer and the non-photosensitive layer contains a dye showing an absorption maximum in a wavelength range of 350 nm to 430 nm. The photothermographic material exhibits high image quality, superior color tone and superior image stability after development.
    Type: Grant
    Filed: November 13, 2002
    Date of Patent: June 15, 2004
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Yoshiharu Yabuki, Katsutoshi Yamane, Ryo Suzuki, Rikio Inoue
  • Inkjet ink, inkjet recording method and production method of inkjet ink
    Publication number: 20040106700
    Abstract: The invention provides an inkjet ink which exhibits, at the printing particularly on paper, excellent ink permeability to eliminate the problem of soiling immediately after printing, can be polymerized in higher sensitivity after printing and enables the recording of an image excellent in water resistance and light fastness through polymerization curing, the inkjet ink comprising a coloring fine particle dispersion containing coloring fine particles and at least one oil-soluble dye, a polymerizable hydrophobic ethylenic unsaturated monomer and a polymerization initiator, the at least one oil-soluble dye having an oxidation potential of 1.0 V or more.
    Type: Application
    Filed: November 26, 2003
    Publication date: June 3, 2004
    Applicant: FUJI PHOTO FILM CO., LTD.
    Inventors: Junichi Yamanouchi, Takahiro Ishizuka, Yoshiharu Yabuki
  • Colored image-forming composition containing phthalocyanine compound, inks, inkjet inks, inkjet reocording method and method of improving toleracne to decoloration due to ozone gas
    Publication number: 20040099181
    Abstract: An ink characterized by containing at least one compound selected from phthalocyanine compounds represented by the general formulae (I), (II), (III) and (IV) has an absorption characteristic superior in color reproducibility as dyes of three primary colors and has sufficient fastness to light, heat, humidity, and active gases in an environment, and hence, can give colored images or colored materials having superior46. The ink can be used for various coloring compositions such as ink compositions for inkjet printing, ink sheets in thermal transfer image-forming materials, coloring compositions for color filters in electrophotographic toners, LCD, PDP, and CCD, and dyeing baths for dyeing various fibers.
    Type: Application
    Filed: October 31, 2003
    Publication date: May 27, 2004
    Inventors: Keiichi Tateishi, Masaki Noro, Yoshiharu Yabuki, Tadashi Omatsu
  • Coloring composition for image formation and method for improving ozone resistance of color image
    Publication number: 20040089200
    Abstract: A coloring composition for image formation comprising an azo dye having an aromatic nitrogen-containing 6-membered heterocyclic ring as a coupling component, a coloring composition which comprises an azo compound having an oxidation potential nobler than 1.0 V vs. SCE and comprising at least two substituents having a pKa value of −10 to 5 in water, and a method for improving ozone resistance of a color image, the method comprising using a compound having an oxidation potential nobler than 1.0 V vs. SCE and showing a maximum absorption at a wavelength between 500 nm and 580 nm with a half-value width of 150 nm or narrower.
    Type: Application
    Filed: September 12, 2003
    Publication date: May 13, 2004
    Inventors: Toshiki Fujiwara, Naoyuki Hanaki, Shigeaki Tanaka, Tadashi Omatsu, Yoshiharu Yabuki
  • Heat-developable photosensitive material
    Patent number: 6727057
    Abstract: A heat-developable photosensitive material comprising at least one light-sensitive layer containing an organic silver salt, light-sensitive silver halide and a reducing agent and at least one light-insensitive layer on a support, wherein the heat-developable photosensitive material comprises a water-soluble metal phthalocyanine compound.
    Type: Grant
    Filed: March 31, 2003
    Date of Patent: April 27, 2004
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Keiichi Suzuki, Yoshiharu Yabuki
  • Ink set, ink cartridge, ink jet printer and recording method
    Publication number: 20040050291
    Abstract: The ink set of the present invention provides a high ejection stability, gives an image having an excellent hue, light-resistance and waterproofness and improves the image preservability under severe conditions in ink jet recording, in which the ink set comprising a plurality of inks different in hues, wherein the plurality of inks includes a yellow ink containing a coloring agent that is a dye having: a &lgr;max of from 390 nm to 470 nm; an I(&lgr;max+70 nm)/I(&lgr;max) ratio of not greater than 0.4, in which I(&lgr;max) is the absorbance at &lgr;max and I(&lgr;max+70 nm) is the absorbance at (&lgr;max+70 nm); and a forced fading rate constant of not greater than 5.0×10−2 [hour−1], an ink cartridge having the ink set received therein, an ink jet printer comprising the ink cartridge mounted therein and an image recording method.
    Type: Application
    Filed: August 22, 2003
    Publication date: March 18, 2004
    Applicant: FUJI PHOTO FILM CO., LTD.
    Inventors: Toshiki Taguchi, Yoshiharu Yabuki, Toru Harada, Naotaka Wachi
  • Ink set, ink cartridge, inkjet printer and recording method
    Publication number: 20040053988
    Abstract: The present invention provides an ink set, in which in ink jet recording, an ejection stability is enhanced, hues, light resistance and water resistance of an image obtained are made excellent, and image keeping quality under severe conditions is improved, wherein the color ink set comprising a plurality of inks different in hues in order to record on a recording medium, the ink set comprising as a black ink at least a specified coloring agent, which has a &lgr;max of 500 nm to 700 nm and a half value width in an absorption spectrum of a dilute solution normalized to an absorbance of 100 nm or more, an ink cartridge containing the same, an ink jet printer carrying them, and an image recording method.
    Type: Application
    Filed: August 22, 2003
    Publication date: March 18, 2004
    Applicant: FUJI PHOTO FILM CO., LTD.
    Inventors: Toshiki Taguchi, Yoshiharu Yabuki, Tomohiro Chino, Naotaka Wachi
  • Phthalocyanine compound, ink inkjet recording ink, ink-jet recording method and method for improving ozone gas resistance of color image material
    Publication number: 20040045478
    Abstract: According to the present invention, a novel phthalocyanine compound having a specific structure is provided, and an ink, an inkjet recording ink, an inkjet recording method and a method for improving preservability of a formed image, each using the compound, are also provided.
    Type: Application
    Filed: July 31, 2003
    Publication date: March 11, 2004
    Inventors: Keiichi Tateishi, Masaki Noro, Yoshiharu Yabuki, Hideaki Naruse, Tadashi Omatsu
  • Ink composition and inkjet recording method
    Publication number: 20040024085
    Abstract: To provide an ink composition that when printed using a nozzle, does not cause clogging at the chip of the nozzle, is free from paper dependency, and when printed on an arbitrarily chosen paper, exhibits superior properties in water resistance, scratch resistance, lightfastness and ozone resistance and an inkjet recording method using it. The ink composition contains colored fine particles containing an oil-soluble polymer and an oil-soluble dye having an oxidation potential higher than 1.0 V (vs SCE), in an aqueous medium.
    Type: Application
    Filed: January 29, 2003
    Publication date: February 5, 2004
    Inventors: Takahiro Ishizuka, Toshiki Fujiwara, Osamu Takahashi, Junichi Yamanouchi, Yoshiharu Yabuki
  • Ink set, container for storing the same, inkjet recording method, and method for preventing discoloration of inkjet-recorded image
    Publication number: 20040020408
    Abstract: An ink set having a yellow ink containing at least one yellow dye, a magenta ink containing at least one magenta dye, and a cyan ink containing at least one cyan dye, wherein an oxidation potential of the magenta dye and an oxidation potential of the cyan dye are each higher than 0.8 V (vs SCE), and an inkjet recording method using the ink set.
    Type: Application
    Filed: February 20, 2003
    Publication date: February 5, 2004
    Applicant: FUJI PHOTO FILM CO., LTD.
    Inventor: Yoshiharu Yabuki