Patents by Inventor Takahiro Ishizuka

Takahiro Ishizuka 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).

  • Patent number: 7041162
    Abstract: The present invention provides an aqueous ink composition comprising a color microparticle dispersion including an oil-soluble dye, a hydrophilic organic solvent and a perfluoroalkylenesulfonic acid or a fluorine type surfactant other than derivatives thereof, and an ink jet method for recording an image by using this aqueous ink composition.
    Type: Grant
    Filed: August 7, 2003
    Date of Patent: May 9, 2006
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Takahiro Ishizuka, Kenji Ikeda
  • Patent number: 7011699
    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: Grant
    Filed: November 26, 2003
    Date of Patent: March 14, 2006
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Junichi Yamanouchi, Takahiro Ishizuka, Yoshiharu Yabuki
  • Publication number: 20050261395
    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: May 10, 2005
    Publication date: November 24, 2005
    Inventors: Takahiro Ishizuka, Toshiki Fujiwara, Osamu Takahashi, Junichi Yamanouchi, Yoshiharu Yabuki
  • Patent number: 6933101
    Abstract: Disclosed is a silver halide photographic light-sensitive material having one or more layers including a light-sensitive silver halide emulsion layer on a support, wherein any of the layers contains the specific fluorine compound. The silver halide photographic light-sensitive material can be stably produced and is imparted with antistatic property.
    Type: Grant
    Filed: November 17, 2003
    Date of Patent: August 23, 2005
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Terukazu Yanagi, Akira Ikeda, Nobuo Hamamoto, Takahiro Ishizuka
  • Publication number: 20050165130
    Abstract: The present invention provides an aqueous ink composition including a hydrophilic organic solvent, a surfactant, and a colored fine particle dispersion which contains an oil-soluble dye, and exhibiting a dynamic surface tension of 25 to 35 mN/m, as well as an ink-jet recording method including a step of carrying out recording using the aqueous ink composition.
    Type: Application
    Filed: July 21, 2003
    Publication date: July 28, 2005
    Inventors: Kenji Ikeda, Takahiro Ishizuka
  • Publication number: 20050068367
    Abstract: To provide an inkjet recording head in which a high ink repelling property is kept even against the repeated use and which is excellent in film strength and abrasion resistance and is excellent with respect to printing quality of the resulting image, the inkjet recording head comprises a nozzle having: a hole for discharging a recording liquid including an ink; and a portion capable of repelling the ink at the periphery of the hole, wherein the portion comprises a cured film formed from a composition comprising a block copolymer, and the block copolymer comprises a unit A and a unit B, wherein the unit A represents a block polymer (A) comprising at least one of a fluorine-containing polymer and a siloxane-containing polymer having a specific structure; and the unit B represents a block polymer (B) comprising a polyester polymer.
    Type: Application
    Filed: September 22, 2004
    Publication date: March 31, 2005
    Applicant: Fuji Photo Film Co., Ltd.
    Inventors: Eiichi Kato, Takahiro Ishizuka
  • Publication number: 20050068368
    Abstract: To provide an inkjet recording head which is excellent in water repellency and wearing resistance and attains high printed-image quality, the inkjet recording head includes a nozzle having: a hole for discharging a recording liquid including an ink; and a portion capable of repelling the ink at the periphery of the hole, wherein the portion contains a crosslinked resin formed from a polymerizable composition having a fluorine-containing polymerizable polymer, and the fluorine-containing polymerizable polymer has: a first structural unit having a fluorine atom; and a second structural unit having a radical-polymerizable group.
    Type: Application
    Filed: September 22, 2004
    Publication date: March 31, 2005
    Applicant: Fuji Photo Film Co., Ltd.
    Inventors: Takahiro Ishizuka, Tatsuhiko Obayashi, Eiichi Kato
  • Publication number: 20050062801
    Abstract: To provide an inkjet recording head in which a high ink repelling property is kept even against the repeated use and which is excellent in film strength and abrasion resistance and is excellent with respect to printing quality of the resulting image, the inkjet recording head comprises a nozzle having: a hole for discharging a recording liquid including an ink; and a portion capable of repelling the ink at the periphery of the hole, wherein the portion comprises a cured film formed from a composition comprising a block copolymer, and the block copolymer comprises: a block polymer comprising a fluorine-containing polymer; and a block polymer comprising a repeating unit having a siloxane structure.
    Type: Application
    Filed: September 22, 2004
    Publication date: March 24, 2005
    Applicant: Fuji Photo Film Co., Ltd.
    Inventors: Eiichi Kato, Takahiro Ishizuka
  • Publication number: 20040221767
    Abstract: The invention provides a colored fine particle dispersion wherein colored fine particles including a dispersible polymer having both of a hydrophilic polymer moiety and a hydrophobic polymer moiety which has a glass transition temperature (Tg) of 0° C. or less and an oil-soluble dye are dispersed in an aqueous medium; an ink using the same; and an ink-jet recording method using the ink. Preferably, a content of the hydrophobic polymer moiety is from 60 to 90% by mass, and a content of the hydrophilic polymer moiety is from 10 to 40% by mass.
    Type: Application
    Filed: April 26, 2004
    Publication date: November 11, 2004
    Applicant: FUJI PHOTO FILM CO., LTD.
    Inventors: Takahiro Ishizuka, Kenji Ikeda
  • Publication number: 20040214919
    Abstract: The present invention provides an ink composition comprising a fine color particle dispersion containing an oil-soluble dye, a hydrophobic polymer and a high-boiling point organic solvent, wherein the glass transition temperature (Tg) of the hydrophobic polymer is 40° C. or more. An average particle diameter of the color fine particles is preferably 0.01 to 0.5 &mgr;m and has a specific gravity of 0.9 to 1.2. A solubility of water in the high boiling point organic solvent at 25° C. is preferably 4 g or less. Also, the invention provides an ink jet recording method comprising a step of forming an image by discharging the ink composition onto an ink image receiving material and a step of fusing the fine color particles contained in the ink composition on the ink image receiving material by at least one of heat and pressure.
    Type: Application
    Filed: January 23, 2004
    Publication date: October 28, 2004
    Applicant: FUJI PHOTO FILM CO., LTD.
    Inventors: Kenji Ikeda, Takahiro Ishizuka
  • 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
  • Publication number: 20040138335
    Abstract: The present invention provides an aqueous ink composition including a hydrophilic organic solvent, a surfactant, and a colored fine particle dispersion which contains an oil-soluble dye, and exhibiting a dynamic surface tension of 25 to 35 mN/m, as well as an ink-jet recording method including a step of carrying out recording using the aqueous ink composition.
    Type: Application
    Filed: July 21, 2003
    Publication date: July 15, 2004
    Inventors: Kenji Ikeda, Takahiro Ishizuka
  • Patent number: 6756423
    Abstract: The present invention related to an ink for ink-jet comprising: a coloring composition containing coloring particulates dispersed in a water based medium, the coloring particulates containing an oil soluble dye and an oil soluble polymer; and wherein the coloring composition has wavelength of maximum absorption (&lgr; max(nm)) in the wavelength range from 510 to 560 nm and when the absorbance at the wavelength of maximum absorption (&lgr; max(nm)) is regarded as 1, the absorbance at a wavelength (&lgr; max+75 (nm)) is no more than 0.2 and the absorbance at a wavelength (&lgr; max−75 (nm)) is no more than 0.4.
    Type: Grant
    Filed: December 21, 2000
    Date of Patent: June 29, 2004
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Takahiro Ishizuka, Keizo Kimura, Makoto Yamada
  • Publication number: 20040115571
    Abstract: Disclosed is a silver halide photographic light-sensitive material having one or more layers including a light-sensitive silver halide emulsion layer on a support, wherein any of the layers contains the specific fluorine compound. The silver halide photographic light-sensitive material can be stably produced and is imparted with antistatic property.
    Type: Application
    Filed: November 17, 2003
    Publication date: June 17, 2004
    Applicant: Fuji Photo Film Co., Ltd.
    Inventors: Terukazu Yanagi, Akira Ikeda, Nobuo Hamamoto, Takahiro Ishizuka
  • Patent number: 6747169
    Abstract: Disclosed is a silver halide photographic light-sensitive material having one or more layers including a light-sensitive silver halide emulsion layer on a support, wherein any of the layers contains the specific fluorine compound. The silver halide photographic light-sensitive material can be stably produced and is imparted with antistatic property.
    Type: Grant
    Filed: August 2, 2002
    Date of Patent: June 8, 2004
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Terukazu Yanagi, Akira Ikeda, Nobuo Hamamoto, Takahiro Ishizuka
  • Patent number: 6746830
    Abstract: A silver halide photosensitive material having a substrate, a heat-responsive-discolorable coloring layer and a photosensitive layer coated thereon and having a silver halide, dye-providing compound and a binder, the heat-responsive-discolorable coloring layer containing a heat-responsive-discolorable coloring composition, which is colored at a temperature lower than its discoloration initiation temperature (T) of 60 to 200° C.; which is substantially discolored at a temperature equal to or higher than T; and which does not recover its color once discolored, even when its temperature is lowered to a temperature lower than T again, and the heat-responsive-discolorable coloring composition containing a polymer having a glass transition temperature of 60 to 200° C.
    Type: Grant
    Filed: October 25, 2002
    Date of Patent: June 8, 2004
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Jun Arakawa, Takahiro Ishizuka
  • 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
  • Patent number: 6734225
    Abstract: An ink for an ink jet includes a coloring composition comprising a dispersion medium and coloring particulates containing an oil-soluble dye represented by formula (1) and a polymer selected from the group consisting of polyurethanes, polyesters, polyamides, polyureas and polycarbonates. The formula (1) satisfies at least one of following (i) to (v): (i) A represents —NR4R5, R4 and R5 each represents independently a C1-18 alkyl group having a substituent group; (ii) At least one of R2 and R7 represents a substituted alkyl group; (iii) R8 represents an aryl group having two or more substituent groups; (iv) Two or more substituent groups represented by —NR170SO2R171 are present in the molecule; and (v) One or more carboxyl groups are present in the molecule.
    Type: Grant
    Filed: February 12, 2001
    Date of Patent: May 11, 2004
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Junichi Yamanouchi, Keizo Kimura, Takahiro Ishizuka
  • Publication number: 20040070041
    Abstract: An anti-reflection film that is an optical film, at least has a hard coat layer, and a low-refractive-index layer containing a binder polymer, on a transparent support, wherein said hard coat layer and/or said low-refractive-index layer contains: (a) a hydrolysate of an organosilane in which a hydroxyl group or a hydrolysable group is directly bonded to silicon, and/or a partial condensation product thereof; and (b) at least one metal chelate compound of an alkylalcohol, and a compound of R4COCH2COR5, in which R4 is an alkyl group, and R5 is an alkyl or alkoxy group, as ligands, and a metal selected from Zr, Ti and Al, as a central metal.
    Type: Application
    Filed: July 3, 2003
    Publication date: April 15, 2004
    Applicant: Fuji Photo Film Co., Ltd.
    Inventors: Tatsuhiko Obayashi, Takahiro Ishizuka, Shuntaro Ibuki, Yuuzou Muramatsu
  • Publication number: 20040035322
    Abstract: The present invention provides an aqueous ink composition comprising a color microparticle dispersion including an oil-soluble dye, a hydrophilic organic solvent and a perfluoroalkylenesulfonic acid or a fluorine type surfactant other than derivatives thereof, and an ink jet method for recording an image by using this aqueous ink composition.
    Type: Application
    Filed: August 7, 2003
    Publication date: February 26, 2004
    Inventors: Takahiro Ishizuka, Kenji Ikeda