Patents by Inventor Takahiro Kato

Takahiro Kato 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: 8580868
    Abstract: The invention provides a water-based ink composition including: a water-based medium, a colored particle containing a pigment and a water-insoluble polymer dispersant, and a self-dispersing polymer particle including a hydrophilic constituent unit, and a hydrophobic constituent unit derived from alicyclic (meth)acrylate, as well as an ink set comprising the water-based ink composition, and an image forming method using the aqueaous ink composition or the ink set.
    Type: Grant
    Filed: August 14, 2009
    Date of Patent: November 12, 2013
    Assignee: FUJIFILM Corporation
    Inventors: Takahiro Kato, Akio Tamura, Takahiro Ishizuka, Terukazu Yanagi
  • Patent number: 8530543
    Abstract: There are provided an ink composition including a coloring material, a hydrophilic organic solvent, polymer particles that have a minimum filming temperature (MFTdisp) of 60° C. or more when dispersed in water and that have a MFT 40° C. or more lower than the MFTdisp when mixed with water and 25 mass % of the hydrophilic organic solvent based on a solid content of the polymer, and water; an ink set including the ink composition and a treating liquid capable of forming an aggregate upon contact with the ink composition; and an ink-jet recording method using the ink composition or the ink set.
    Type: Grant
    Filed: August 19, 2009
    Date of Patent: September 10, 2013
    Assignee: FUJIFILM Corporation
    Inventors: Terukazu Yanagi, Takahiro Ishizuka, Akio Tamura, Takahiro Kato
  • Patent number: 8529047
    Abstract: An aqueous ink composition including: a water-soluble polymerizable compound containing two or more polymerizable functional groups each selected from the group consisting of a (meth)acrylamide group, a maleimide group, a vinyl sulfone group, and an N-vinyl amide group, wherein a ratio of a molecular weight of the compound relative to a number of the polymerizable functional groups contained in a single molecule of the compound is 175 or less; a polymerization initiator; and water.
    Type: Grant
    Filed: February 24, 2011
    Date of Patent: September 10, 2013
    Assignee: FUJIFILM Corporation
    Inventors: Koji Yasuda, Takahiro Kato, Yasufumi Ooishi, Hirotaka Kitagawa, Toshihiro Kamada
  • Patent number: 8426496
    Abstract: An ink-jet ink composition comprising: a pigment, a polymer pigment dispersion, polymer particles, a hydrophilic organic solvent, water, and at least one of a water-soluble acidic compound having a molecular weight of 200 or less or a salt thereof in an amount of from 50 ppm to 1,000 ppm; an ink set that includes the ink-jet ink composition and a treatment liquid that forms an aggregate when contacted with the ink-jet ink composition; and an image forming method using the ink set.
    Type: Grant
    Filed: February 24, 2010
    Date of Patent: April 23, 2013
    Assignee: FUJIFILM Corporation
    Inventors: Terukazu Yanagi, Takahiro Ishizuka, Akio Tamura, Takahiro Kato
  • Patent number: 8400198
    Abstract: An on-chip phase-locked loop circuit has reduced power consumption in a semiconductor integrated circuit. The phase locked loop circuit is equipped with a phase frequency comparator, a loop attenuator, a charge pump, a loop filter, a voltage controlled oscillator and a divider. The attenuator includes a sampling circuit and a counter. A sampling pulse and first and second output signals both outputted from the phase frequency comparator are supplied to the sampling circuit. The sampling circuit outputs a sampling output signal. When the counter completes a countup of a predetermined number of sampling pulses outputted from the sampling circuit, the counter outputs a countup completion output signal. The charge pump outputs a charging current or a discharging current to the loop filter in response to the countup completion output signal.
    Type: Grant
    Filed: October 16, 2012
    Date of Patent: March 19, 2013
    Assignee: Renesas Electronics Corporation
    Inventor: Takahiro Kato
  • Patent number: 8399540
    Abstract: An ink-jet ink composition comprising: a pigment, a polymer pigment dispersion, polymer particles, a hydrophilic organic solvent, water, and at least one of a water-soluble acidic compound having a molecular weight of 200 or less or a salt thereof in an amount of from 50 ppm to 1,000 ppm; an ink set that includes the ink-jet ink composition and a treatment liquid that forms an aggregate when contacted with the ink-jet ink composition; and an image forming method using the ink set.
    Type: Grant
    Filed: February 24, 2010
    Date of Patent: March 19, 2013
    Assignee: FUJIFILM Corporation
    Inventors: Terukazu Yanagi, Takahiro Ishizuka, Akio Tamura, Takahiro Kato
  • Patent number: 8389602
    Abstract: An ink composition for ink-jet recording, including: coloring particles containing a pigment that is coated with a water-insoluble polymer dispersant, and self-dispersing polymer particles containing a first polymer which includes a constituent unit derived from a hydrophilic monomer and a constituent unit derived from a hydrophobic monomer, and which has a glass transition temperature from 150° C. to 250° C. and an I/O value of from 0.20 to 0.55; an ink set including the ink composition; and an image forming method using the ink set are provided.
    Type: Grant
    Filed: February 24, 2010
    Date of Patent: March 5, 2013
    Assignee: FUJIFILM Corporation
    Inventors: Terukazu Yanagi, Takahiro Ishizuka, Akio Tamura, Takahiro Kato
  • Patent number: 8368441
    Abstract: An on-chip phase-locked loop circuit has reduced power consumption in a semiconductor integrated circuit. The phase locked loop circuit is equipped with a phase frequency comparator, a loop attenuator, a charge pump, a loop filter, a voltage controlled oscillator and a divider. The attenuator includes a sampling circuit and a counter. A sampling pulse and first and second output signals both outputted from the phase frequency comparator are supplied to the sampling circuit. The sampling circuit outputs a sampling output signal. When the counter completes a countup of a predetermined number of sampling pulses outputted from the sampling circuit, the counter outputs a countup completion output signal. The charge pump outputs a charging current or a discharging current to the loop filter in response to the countup completion output signal.
    Type: Grant
    Filed: January 25, 2012
    Date of Patent: February 5, 2013
    Assignee: Renesas Electronics Corporation
    Inventor: Takahiro Kato
  • Publication number: 20120274408
    Abstract: Disclosed is a semiconductor integrated circuit device that includes a ring oscillator circuit, performs a proper oscillation operation, and expands the range of oscillation frequency variation. The ring oscillator circuit includes, for instance, plural differential amplifier circuits. MOS transistors are respectively added to input nodes of a differential pair of the differential amplifier circuits. Further, gate control circuits are incorporated to control the gates of the MOS transistors, respectively. The gate control circuits cause the MOS transistors to function as an amplitude limiter circuit in mode 3, exercise control to turn off the amplitude limiter circuit in mode 2, and use the amplitude limiter circuit to start oscillation in mode 1.
    Type: Application
    Filed: July 11, 2012
    Publication date: November 1, 2012
    Applicant: RENESAS ELECTRONICS CORPORATION
    Inventor: Takahiro KATO
  • Patent number: 8292418
    Abstract: The invention provides an aqueous ink composition including: a) a water-based medium; b) a compound having an ethylenically unsaturated bond; and c) resin particles including a water-insoluble vinyl polymer and a water-insoluble photoinitiator.
    Type: Grant
    Filed: September 1, 2010
    Date of Patent: October 23, 2012
    Assignee: FUJIFILM Corporation
    Inventors: Takahiro Kato, Takahiro Ishizuka, Tomoko Kuwabara, Yasufumi Ooishi
  • Publication number: 20120242384
    Abstract: An on-chip phase-locked loop circuit has reduced power consumption in a semiconductor integrated circuit. The phase locked loop circuit is equipped with a phase frequency comparator, a loop attenuator, a charge pump, a loop filter, a voltage controlled oscillator and a divider. The attenuator includes a sampling circuit and a counter. A sampling pulse and first and second output signals both outputted from the phase frequency comparator are supplied to the sampling circuit. The sampling circuit outputs a sampling output signal. When the counter completes a countup of a predetermined number of sampling pulses outputted from the sampling circuit, the counter outputs a countup completion output signal. The charge pump outputs a charging current or a discharging current to the loop filter in response to the countup completion output signal.
    Type: Application
    Filed: January 25, 2012
    Publication date: September 27, 2012
    Applicant: Renesas Electronics Corporation
    Inventor: Takahiro Kato
  • Publication number: 20120212980
    Abstract: A power supply apparatus supplies regulated power to an external apparatus. A power switch is turned on to receive AC power and turned off not to receive the AC power. The AC power is rectified by a rectifying section and is switched by a switching section into switched DC power which is smoothed by a rectifying/smoothing section. Upon reception of an alarm signal, the power disconnecting section stops sending the switched DC power to the rectifying/smoothing section. If the AC switch is turned off and then back on again after stopping sending the switched DC power to the smoothing section, the power disconnecting section allows receiving of the AC power only a time after turn-off of the power switch. Upon reception of an auto-off signal indicative of an idle state of the external apparatus, an auto-off section does not send the switched DC power to the rectifying/smoothing section.
    Type: Application
    Filed: February 21, 2012
    Publication date: August 23, 2012
    Applicant: OKI DATA CORPORATION
    Inventors: Takahiro KATO, Motonobu Hatakeyama, Koji Umetsu
  • Patent number: 8232848
    Abstract: Disclosed is a semiconductor integrated circuit device that includes a ring oscillator circuit, performs a proper oscillation operation, and expands the range of oscillation frequency variation. The ring oscillator circuit includes, for instance, plural differential amplifier circuits. MOS transistors are respectively added to input nodes of a differential pair of the differential amplifier circuits. Further, gate control circuits are incorporated to control the gates of the MOS transistors, respectively. The gate control circuits cause the MOS transistors to function as an amplitude limiter circuit in mode 3, exercise control to turn off the amplitude limiter circuit in mode 2, and use the amplitude limiter circuit to start oscillation in mode 1.
    Type: Grant
    Filed: January 20, 2011
    Date of Patent: July 31, 2012
    Assignee: Renesas Electronics Corporation
    Inventor: Takahiro Kato
  • Publication number: 20120141679
    Abstract: An ink composition includes: (Component a) a polymerizable compound having an ethylenically unsaturated double bond; (Component b) a polymerization initiator; (Component c) water; and (Component d) a polyhydric alcohol having an alkyleneoxy chain, wherein the (Component a) polymerizable compound includes a monofunctional polymerizable monomer having a (meth)acrylamide structure, and a content of the monofunctional polymerizable monomer is 5% by mass or more with respect to a total content of the (Component a) polymerizable compound.
    Type: Application
    Filed: November 18, 2011
    Publication date: June 7, 2012
    Applicant: FUJIFILM CORPORATION
    Inventors: Toshihiro KAMADA, Takahiro KATO
  • Publication number: 20120056365
    Abstract: An image recording apparatus, for conveying a roll paper as a sheet and a cut paper as a sheet to record an image on the sheet, includes a sheet type selecting unit, a rotation amount measurement unit, a determination unit, a conveyance suspension unit, and a first conveyance restarting unit. The sheet type selecting unit allows a user to select a roll paper mode and a cut paper mode. The determination unit determines whether the conveyed sheet is the roll paper or the cut paper based on the rotation amount measured by the rotation amount measurement unit. The conveyance suspension unit suspends the sheet conveyance in response to it being determined that the conveyed sheet is different from the selected sheet type. The first conveyance restarting unit restarts a sheet conveyance by the conveyance suspended during the cut paper mode, by switching to the roll paper mode.
    Type: Application
    Filed: August 29, 2011
    Publication date: March 8, 2012
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Takahiro Kato
  • Patent number: 8110616
    Abstract: An aqueous inkjet recording ink including at least a resin (A), a pigment (B) dispersed with the resin (A), a resin emulsion (C), and an aqueous liquid medium (D), wherein the resin (A) includes hydrophobic structural units (a) and hydrophilic structural units (b), the hydrophobic structural units (a) include a hydrophobic structural unit (a1) in an amount of 40% by mass or more of the resin (A), the hydrophobic structural unit (a1) having an aromatic ring indirectly linked to an atom for forming the main chain of the resin (A), and a hydrophobic structural unit (a2) in an amount of 15% by mass or more of the resin (A), the hydrophobic structural unit (a2) being derived from a C1 to C4 alkyl acrylate or methacrylate, the hydrophilic structural units (b) include a structural unit (b1) derived from an acrylic acid or a methacrylic acid, and the content of the hydrophilic structural units (b) is 15% by mass or less in the resin (A).
    Type: Grant
    Filed: February 9, 2009
    Date of Patent: February 7, 2012
    Assignee: Fujifilm Corporation
    Inventors: Misato Sasada, Takafumi Hosokawa, Takahiro Kato
  • Patent number: 8109623
    Abstract: An ink-jet recording method is provided. The ink-jet method includes recording an images by ejecting, onto a recording medium by an-inkjet method, a liquid composition containing polymer particles having a glass transition temperature (Tg) higher than the minimum film forming temperature (MFT) at least by 5° C., a hydrophilic organic solvent, a surfactant, and water under ejection conditions satisfying all of the following (1) to (3): (1) Tg>the temperature of the liquid composition at the time of ejection>MFT, (2) MFT>20° C., and (3) the temperature of the liquid composition at the time of ejection is 30° C. or higher.
    Type: Grant
    Filed: March 18, 2009
    Date of Patent: February 7, 2012
    Assignee: Fujifilm Corporation
    Inventors: Terukazu Yanagi, Akio Tamura, Takahiro Ishizuka, Takahiro Kato
  • Patent number: 8105650
    Abstract: An ink set for inkjet recording is provided. The ink set includes: at least one kind of ink composition that contains self-dispersing polymer particles, a color material, a hydrophilic organic solvent and water; and a reaction liquid capable of forming an aggregate upon contact with the ink composition.
    Type: Grant
    Filed: February 9, 2009
    Date of Patent: January 31, 2012
    Assignee: Fujifilm Corporation
    Inventors: Terukazu Yanagi, Takahiro Ishizuka, Akio Tamura, Takahiro Kato
  • Patent number: 8042515
    Abstract: A compact throttle device with a short air intake pipe length. A throttle device includes: throttle bodies that define air intake paths; throttle valves that are disposed in the air intake paths and adjust the air flow rate in the air intake paths; a throttle shaft that rotatably supports the throttle valves; a motor that rotates the throttle shaft; and a gear that connects the throttle shaft to the motor. A pin is provided as a protrusion on the peripheral surface of the throttle shaft. The gear externally fitted and fixed to the throttle shaft has, on a fixing ring that is externally fitted to the throttle shaft, a housing groove for housing the pin, the housing groove being impelled against the pin by a spring.
    Type: Grant
    Filed: August 25, 2009
    Date of Patent: October 25, 2011
    Assignee: Mikuni Corporation
    Inventor: Takahiro Kato
  • Publication number: 20110205291
    Abstract: An aqueous ink composition including: a water-soluble polymerizable compound containing two or more polymerizable functional groups each selected from the group consisting of a (meth)acrylamide group, a maleimide group, a vinyl sulfone group, and an N-vinyl amide group, wherein a ratio of a molecular weight of the compound relative to a number of the polymerizable functional groups contained in a single molecule of the compound is 175 or less; a polymerization initiator; and water.
    Type: Application
    Filed: February 24, 2011
    Publication date: August 25, 2011
    Applicant: FUJIFILM CORPORATION
    Inventors: Koji YASUDA, Takahiro KATO, Yasufumi OOISHI, Hirotaka KITAGAWA, Toshihiro KAMADA