Patents by Inventor Takashi Oyanagi

Takashi Oyanagi 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).

  • Photocurable ink composition and inkjet recording method
    Patent number: 8227539
    Abstract: A photocurable ink composition includes: a polymerizable compound; a radical photopolymerization initiator; a hindered amine compound; and a metallic pigment, the polymerizable compound including an active hydrogen-containing functional group.
    Type: Grant
    Filed: August 11, 2008
    Date of Patent: July 24, 2012
    Assignee: Seiko Epson Corporation
    Inventors: Takashi Oyanagi, Keitaro Nakano, Masaaki Itano, Chiyoshige Nakazawa
  • Light emitting device, method of manufacturing light emitting device, and ink jet recording apparatus
    Patent number: 8220916
    Abstract: A light emitting device includes a substrate, a light emitting body, a thermally conductive member, and a heat radiation member. The substrate has a first face and a second face which is a face opposite to the first face. The light emitting body is held on a side of the first face of the substrate and emits light. The thermally conductive member is provided so as to be in contact with the second face of the substrate and contains a high thermal conductive material. The heat radiation member is provided so as to be in contact with the thermally conductive member and radiates heat conducted from the substrate through the thermally conductive member.
    Type: Grant
    Filed: April 22, 2011
    Date of Patent: July 17, 2012
    Assignee: Seiko Epson Corporation
    Inventors: Takashi Oyanagi, Keitaro Nakano
  • Ink jet recording method and record
    Patent number: 8215764
    Abstract: An ink jet recording method for recording an image having a metallic luster on a recording medium with an ink jet recording apparatus includes forming an underlayer on the recording medium by applying droplets of a first ink composition containing a first thermoplastic resin to the recording medium and also includes forming a metallic luster layer on the underlayer by applying droplets of a second ink composition containing a metal pigment and a second thermoplastic resin to the underlayer. The glass transition temperature of the first thermoplastic resin is lower than or equal to the glass transition temperature of the second thermoplastic resin. The underlayer is formed at a temperature higher than the glass transition temperature of the first thermoplastic resin.
    Type: Grant
    Filed: January 22, 2010
    Date of Patent: July 10, 2012
    Assignee: Seiko Epson Corporation
    Inventors: Tsuyoshi Sano, Takashi Oyanagi, Akio Ito
  • Reduced-moisture-content-solvent ink composition and method for producing the same
    Patent number: 8192538
    Abstract: A method for producing a reduced-moisture-content-solvent ink composition includes reducing the moisture content of a pigment dispersion containing a metal pigment and a dispersion medium or an ink composition containing the pigment dispersion and an organic solvent by bubbling treatment using an inert gas having a water vapor content of 2.0 mg/L or less.
    Type: Grant
    Filed: October 6, 2010
    Date of Patent: June 5, 2012
    Assignee: Seiko Epson Corporation
    Inventors: Takashi Oyanagi, Kiyohiko Takemoto
  • Photocurable ink composition, ink jet recording method, and recording matter
    Patent number: 8192804
    Abstract: A photocurable ink composition includes a dendritic polymer, a monomer expressed by CH2?CR1—COO—R2—O—CH?CH—R3 (R1 denotes a hydrogen atom or a methyl group, R2 denotes an organic residue having a carbon number of 2 to 20, and R3 denotes a hydrogen atom or an organic residue having a carbon number of 1 to 11), and a photo-polymerization initiator.
    Type: Grant
    Filed: August 8, 2008
    Date of Patent: June 5, 2012
    Assignee: Seiko Epson Corporation
    Inventors: Hiroshi Fukumoto, Keitaro Nakano, Takashi Oyanagi
  • PIGMENT DISPERSION, INKJET COMPOSITION, INK SET, AND RECORDING DEVICE
    Publication number: 20120103230
    Abstract: A pigment dispersion containing a metal pigment, wherein the metal pigment contains plate-like particles, and in the case where the longitudinal diameter on the planar surface of the plate-like particle is X, the lateral diameter is Y, and the thickness is Z, the 50% average particle diameter R50 of a corresponding circle determined from the surface area in the X-Y plane of the plate-like particle is between 0.5 and 3 ?m, and the condition R5O/Z>5 is satisfied.
    Type: Application
    Filed: December 21, 2011
    Publication date: May 3, 2012
    Inventors: Takashi OYANAGI, Keitaro NAKANO
  • PIGMENT DISPERSION, INK COMPOSITION, INKSET, AND RECORDING DEVICE
    Publication number: 20120098911
    Abstract: A pigment dispersion containing a metal pigment, wherein the metal pigment contains plate-like particles, and in the case where the longitudinal diameter on the planar surface of the plate-like particle is X, the lateral diameter is Y, and the thickness is Z, the 50% average particle diameter R50 of a corresponding circle determined from the surface area in the X-Y plane of the plate-like particle is between 0.5 and 3 ?m, and the condition R50/Z>5 is satisfied.
    Type: Application
    Filed: December 21, 2011
    Publication date: April 26, 2012
    Inventors: Takashi Oyanagi, Keitaro Nakano
  • Ink jet recording method, recorded product, ink composition for ink jet recording, ink set, ink cartridge, and ink jet recording apparatus
    Patent number: 8163076
    Abstract: An ink-jet recording method includes ejecting a droplet of an ink composition containing a metal pigment and optically transparent spherical particles with an ink-jet recording apparatus, the ink composition having an optically transparent spherical particle content of 0.5% to 5% by mass, and attaching the droplet to a recording surface of a recording medium having an average surface roughness Ra of 3 ?m or more, thereby recording an image.
    Type: Grant
    Filed: January 7, 2010
    Date of Patent: April 24, 2012
    Assignee: Seiko Epson Corporation
    Inventors: Takashi Oyanagi, Hiroki Nakane
  • Photocurable ink composition set, ink jet recording method, and recorded matter
    Patent number: 8158214
    Abstract: A photocurable ink composition set includes ink composition A and ink composition B. Ink composition A contains a dendritic polymer and an monomer expressed by general formula (1): CH2?CR1—COO—R2—O—CH?CH—R3. Ink composition B contains a coloring agent and a monomer expressed by general formula (1). In the formula (1), R1 represents a hydrogen atom or a methyl group, R2 represents an organic moiety having a carbon number in the range of 2 to 20, and R3 represents a hydrogen atom or an organic moiety having a carbon number in the range of 1 to 11.
    Type: Grant
    Filed: August 8, 2008
    Date of Patent: April 17, 2012
    Assignee: Seiko Epson Corporation
    Inventors: Hiroshi Fukumoto, Keitaro Nakano, Takashi Oyanagi
  • Ink-jet recording method and ink composition set
    Patent number: 8142007
    Abstract: An ink composition set including an ink composition. A containing at least a colorant and an interior curable photopolymerization initiator, and an ink composition B containing at least a polymerizable compound, a surface curable photopolymerization initiator and a polymerization accelerator, and an ink-jet recording method using the ink composition set.
    Type: Grant
    Filed: July 21, 2009
    Date of Patent: March 27, 2012
    Assignee: Seiko Epson Corporation
    Inventors: Takashi Oyanagi, Keitaro Nakano
  • INK COMPOSITION
    Publication number: 20120069108
    Abstract: The present invention provides an ink composition comprising at least a polymerizable compound, a photo-polymerization initiator and a polymerization accelerator, wherein the polymerizable compound comprises en N-vinyl compound, the photo-polymerization initiator comprises two or more compounds selected from the group consisting of bisacylphosphine oxides, monoacylphosphine oxides and ?-amino ketones, and the polymerization accelerator comprises fine particles having a polymerizable functional group. The ink composition of the invention may be a transparent ink composition containing no coloring material. The ink composition of the invention may further contain a fluorescent whitening agent.
    Type: Application
    Filed: November 4, 2011
    Publication date: March 22, 2012
    Inventors: Takashi OYANAGI, Keitaro Nakano
  • INK JET RECORDING METHOD, INK SET, AND RECORDED MATTER
    Publication number: 20120040147
    Abstract: An ink jet recording method for recording a non-water-based glitter ink on a recording medium, including forming an underlayer, in which a resin ink in which resin components are dispersed or dissolved in a dispersion medium is applied to at least a site of the recording medium on which the non-water-based glitter ink is recorded, thereby forming an underlayer, and recording a glitter ink, in which the non-water-based glitter ink is recorded on the underlayer.
    Type: Application
    Filed: August 9, 2011
    Publication date: February 16, 2012
    Inventors: Hidehiko Komatsu, Tetsuya Aoyama, Takashi Oyanagi, Kazuaki Tsukiana
  • Ink set, ink jet recording method, recorded matter, and ink jet recording apparatus
    Patent number: 8105429
    Abstract: An ink set includes an oil-based ink composition containing a metallic pigment; and at least one oil-based ink composition selected from the group consisting of a chromatic color ink composition containing a chromatic color oil dye, a black ink composition containing a black oil dye, and a colorless and transparent ink composition that does not contain a colorant.
    Type: Grant
    Filed: October 26, 2010
    Date of Patent: January 31, 2012
    Assignee: Seiko Epson Corporation
    Inventors: Takashi Oyanagi, Akio Ito, Seishin Yoshida
  • Ink set, ink jet recording method, recorded matter, and ink jet recording apparatus
    Patent number: 8097075
    Abstract: An ink set includes an oil-based ink composition containing a metallic pigment; and at least one oil-based ink composition selected from the group consisting of a chromatic color ink composition containing a chromatic color oil dye, a black ink composition containing a black oil dye, and a colorless and transparent ink composition that does not contain a colorant.
    Type: Grant
    Filed: July 6, 2009
    Date of Patent: January 17, 2012
    Assignee: Seiko Epson Corporation
    Inventors: Takashi Oyanagi, Akio Ito, Seishin Yoshida
  • INK COMPOSITION
    Publication number: 20120006225
    Abstract: An ink composition contains an organic solvent, a metal pigment, and a silicone oil having a kinematic viscosity of 2 to 30 cSt in a proportion of 0.01% by mass or more and less than 0.5% by mass relative to the total mass of the ink composition. The value of expression (1) is 0.1 or more and less than 9.
    Type: Application
    Filed: July 8, 2011
    Publication date: January 12, 2012
    Inventors: Kazuaki TSUKIANA, Takashi OYANAGI
  • INK SET, INK CONTAINER, INKJET RECORDING METHOD, RECORDING DEVICE, AND RECORDED MATTER
    Publication number: 20120006224
    Abstract: An ink set, comprising: an oil based ink composition containing a metallic pigment; and at least one or more oil based ink compositions selected from a group consisting of a chromatic color ink composition containing chromatic color pigment, a black ink composition containing black pigment, and a white ink composition containing white pigment.
    Type: Application
    Filed: September 22, 2011
    Publication date: January 12, 2012
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Takashi OYANAGI, Kiyohiko TAKEMOTO, Chiyoshige NAKAZAWA
  • Container and method for storing light-curable ink
    Patent number: 8083340
    Abstract: There is provided a method of storing a light-curable ink composition. Air and the light-curable ink composition are introduced into a container. The distance from an air-liquid interface to a bottom portion of the container is equal to or less than 5 cm. The amount of oxygen dissolved in the light-curable ink composition is maintained so as to be equal to or more than 3 ppm.
    Type: Grant
    Filed: March 20, 2007
    Date of Patent: December 27, 2011
    Assignee: Seiko Epson Corporation
    Inventors: Takashi Oyanagi, Keitaro Nakano
  • Ink Composition, Two-Pack Curing Ink Composition Set, and Recording Method and Recorded Matter Using These
    Publication number: 20110287236
    Abstract: The present invention provides: an ink composition which contains at least a polymerizable compound, a photopolymerization initiator and a coloring material, and is free from an aqueous solvent, wherein the polymerizable compound comprises at least a urethane oligomer; a two-pack curing ink composition set comprising an ink composition containing a coloring material and a reaction liquid containing a photopolymerization initiator and capable of forming an image with an ink composition obtained by mixing the ink composition and the reaction liquid, wherein the ink composition after mixing contains at least a polymerizable compound, a photopolymerization initiator and a coloring material, and is free from an aqueous solvent, wherein the polymerizable compound comprises a urethane oligomer.
    Type: Application
    Filed: August 3, 2011
    Publication date: November 24, 2011
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Keitaro Nakano, Takashi Oyanagi
  • LIGHT EMITTING DEVICE, METHOD OF MANUFACTURING LIGHT EMITTING DEVICE, AND INK JET RECORDING APPARATUS
    Publication number: 20110199449
    Abstract: A light emitting device includes a substrate, a light emitting body, a thermally conductive member, and a heat radiation member. The substrate has a first face and a second face which is a face opposite to the first face. The light emitting body is held on a side of the first face of the substrate and emits light. The thermally conductive member is provided so as to be in contact with the second face of the substrate and contains a high thermal conductive material. The heat radiation member is provided so as to be in contact with the thermally conductive member and radiates heat conducted from the substrate through the thermally conductive member.
    Type: Application
    Filed: April 22, 2011
    Publication date: August 18, 2011
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Takashi OYANAGI, Keitaro NAKANO
  • PIGMENT DISPERSION, INK COMPOSITION, INKSET, AND RECORDING DEVICE
    Publication number: 20110181656
    Abstract: A pigment dispersion containing a metal pigment, wherein the metal pigment contains plate-like particles, and in the case where the longitudinal diameter on the planar surface of the plate-like particle is X, the lateral diameter is Y, and the thickness is Z, the 50% average particle diameter R50 of a corresponding circle determined from the surface area in the X-Y plane of the plate-like particle is between 0.5 and 3 ?m, and the condition R50/Z>5 is satisfied.
    Type: Application
    Filed: April 7, 2011
    Publication date: July 28, 2011
    Inventors: Takashi OYANAGI, Keitaro NAKANO