Patents by Inventor Nobuyuki Hirayama

Nobuyuki Hirayama 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: 20200180308
    Abstract: A printing apparatus measures a temperature of an electrothermal transducer by a corresponding temperature detection element, detects, based on the measured temperature, a peak voltage which indicates a point of change, from a state where ink is discharged normally from a printhead to a state where the ink is not discharged from the printhead, and compares the peak voltage with a threshold value. The measurement, detection, and comparison are repeated until the peal voltage becomes equal to or more than the threshold value. Energy supplied to the electrothermal transducer at a time in which the peak voltage is determined to be equal to or more than the threshold is determined to be minimum discharge energy.
    Type: Application
    Filed: December 3, 2019
    Publication date: June 11, 2020
    Inventors: Takatsugu Moriya, Masaki Oikawa, Nobuyuki Hirayama, Hiroyasu Nomura
  • Patent number: 10668719
    Abstract: A recording element substrate includes a substrate, a plurality of energy generating elements arranged on the substrate to form an element row, a plurality of supply ports arranged along the element row to form a supply port row, and a plurality of supply paths extending from the plurality of supply ports along the thickness direction of the substrate, wherein a plurality of beam portions disposed between adjacent supply ports in the direction of the supply port row has a plurality of conductor layers in which a conductor layer including a power supply conductor connected to the energy generating elements and a conductor layer including a ground conductor connected to the energy generating elements, are stacked along the thickness direction of the substrate, and wherein at least one of the plurality of conductor layers is occupied by one power supply conductor or one ground conductor.
    Type: Grant
    Filed: September 21, 2018
    Date of Patent: June 2, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masataka Sakurai, Nobuyuki Hirayama, Ryo Kasai, Kengo Umeda, Hidenori Yamato, Masanobu Ohmura, Tatsuhito Goden
  • Publication number: 20200095441
    Abstract: The purpose of the present invention is to provide an ink composition for ink-jet printers which is for painting or drawing on cosmetic surfaces, etc. using an ink-jet printer and which is excellent in terms of the dispersibility and re-dispersibility of a pigment, etc. and consists only of components that are permitted to be incorporated into cosmetics. The present invention relates to an ink composition for ink-jet printers, characterized by containing at least one copolymer selected from between (a) an alkyl acrylate/diacetone acrylamide copolymer and (b) an acrylate/C1-18-alkyl acrylate/C1-8-alkylacrylamide copolymer.
    Type: Application
    Filed: March 19, 2018
    Publication date: March 26, 2020
    Applicant: SHISEIDO COMPANY, LTD.
    Inventors: Toshifumi URASHIMA, Daisuke ASO, Nobuyuki YOSHINO, Takehiro HIRAYAMA
  • Publication number: 20200086633
    Abstract: A liquid discharge apparatus comprises: a plurality of anti-cavitation layers formed to cover heat generating elements at positions where the anti-cavitation layers contact the liquid; a monitoring unit that detects a current flowing through the anti-cavitation layers; a switching unit that switches whether to apply, to the heat generating elements, and a voltage for driving the heat generating elements, wherein the switching unit includes a plurality of switching units, and if the monitoring unit detects that the current larger than the predetermined value has flowed through the anti-cavitation layer while the voltage is applied to the heat generating elements, the control unit sequentially switches the plurality of switching units, and specifies the heat generating element corresponding to the anti-cavitation layer through which the current has flowed, among the heat generating elements.
    Type: Application
    Filed: September 13, 2019
    Publication date: March 19, 2020
    Inventors: Yuzuru Ishida, Maki Kato, Yoshinori Misumi, Nobuyuki Hirayama
  • Publication number: 20200071207
    Abstract: An apparatus is disclosed including a desulfurization device which removes sulfur oxides contained in boiler flue gas, a spray drying device which sprays desulfurization waste water discharged from the desulfurization device and which dries the waste water by introducing a drying gas, a flue gas supplying line L13 which returns, to a main flue L11, flue gas obtained after the desulfurization waste water is evaporated and dried, an alkaline agent supplying unit which adds an alkaline agent to a desulfurization waste water line L21, and a pH meter which measures the pH in the desulfurization waste water at locations before and after the alkaline agent supplying unit in the desulfurization waste water line L21, wherein the alkaline agent is added in accordance with a measurement result of a measured pH to cause the desulfurization waste water added with the alkaline agent to have a pH fall within a predetermined pH.
    Type: Application
    Filed: March 27, 2018
    Publication date: March 5, 2020
    Applicant: MITSUBISHI HITACHI POWER SYSTEMS, LTD.
    Inventors: Naoyuki Kamiyama, Nobuyuki Ukai, Koichiro Hirayama, Satoru Sugita, Tetsu Ushiku, Toshihiro Fukuda
  • Patent number: 10493774
    Abstract: On an element substrate having a multilayered structure in which a temperature detection element is provided in an intermediate layer of a wiring layer and a print element layer, a wiring layer and a temperature detection element formed on the first interlayer insulation film are connected by a first conductive plug which penetrates through the first interlayer insulation film. In addition, a wiring layer and a print element which are formed on the second interlayer insulation film formed on the first interlayer insulation film are connected by a second conductive plug which penetrates through the first and second interlayer insulation films. By manufacturing the element substrate by this arrangement, the thickness of an interlayer insulation film between a print element and a temperature detection element can be made thin, and the sensitivity of the temperature detection element can be improved.
    Type: Grant
    Filed: October 3, 2018
    Date of Patent: December 3, 2019
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Hideo Kanno, Nobuyuki Hirayama, Sadayoshi Sakuma
  • Patent number: 10472534
    Abstract: Provided is a layered product with high jet-black. A layered product according to the present invention is a layered product (10) including at least a first layer (1) and a second layer (2) that are stacked. A value of L* in a L*a*b* color system defined by JIS Z8729 of the first layer (1) is ten or less. The second layer (2) is formed on the first layer (1) and 0.1 to 1 mass % of carbon nanotubes are contained in a material constituting the second layer (2). In the L*a*b* color system defined by JIS Z8729, when values are measured from a side of a plane of the second layer (2), a value of L* is 2.5 or less, a value of a* is ?2.0 or greater and 2.0 or less, and a value of b* is ?2.0 or greater and 0.5 or less.
    Type: Grant
    Filed: July 2, 2015
    Date of Patent: November 12, 2019
    Assignees: TOYO INK SC HOLDINGS CO., LTD., TOYOCOLOR CO., LTD.
    Inventors: Nobuyuki Nahata, Katsumi Watanabe, Yu Morita, Motoki Masuda, Toshiaki Hirayama
  • Publication number: 20190299600
    Abstract: According to an embodiment of this invention, an element substrate which is included in a printhead, comprises: a heater configured to heat ink and discharge ink from a nozzle; a temperature sensor provided in correspondence with the heater; an electric current source configured to energize the temperature sensor with an electric current based on an electric current value specified by an externally input first signal; and a determination circuit configured to determine an ink discharge status of the nozzle based on a voltage output from the temperature sensor energized with the electric current and a threshold voltage specified by an externally input second signal, and output a determination result signal.
    Type: Application
    Filed: March 22, 2019
    Publication date: October 3, 2019
    Inventors: Hiroyasu Nomura, Nobuyuki Hirayama
  • Patent number: 10322581
    Abstract: According to embodiments of the present invention, an element substrate capable of detecting a temperature immediately below a heater with high sensitivity is provided. The element substrate has a multilayer structure, and includes a heater, a first wiring below a position where the heater is provided, and a second wiring below the first wiring. The element substrate further includes a temperature detection element formed by series-connecting a first conductive via for connecting the first wiring and the second wiring, a constant electric current source which supplies a constant electric current, and a voltage detection circuit which detects a voltage obtained by supplying the constant electric current to the temperature detection element.
    Type: Grant
    Filed: July 11, 2017
    Date of Patent: June 18, 2019
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Nobuyuki Hirayama
  • Patent number: 10308021
    Abstract: A print element substrate that includes a plurality of heaters and a plurality of temperature sensors provided in correspondence with a plurality of nozzles, comprises: a selecting unit that selects one temperature sensor from the plurality of temperature sensors and output a temperature signal; a determining unit that determines a discharge state of the nozzle based on the temperature signal output by the selecting unit; an outputting unit that, based on a determination result output from the determining unit, externally outputs a signal indicating the discharge state of the nozzle corresponding to the selected temperature sensor; and a masking unit that, in accordance with a change in selection of the temperature sensor by the selecting unit, masks the determination result output from the determining unit to the outputting unit during a predetermined time from a timing of the change.
    Type: Grant
    Filed: November 27, 2017
    Date of Patent: June 4, 2019
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Hiroyasu Nomura, Nobuyuki Hirayama
  • Publication number: 20190105921
    Abstract: On an element substrate having a multilayered structure in which a temperature detection element is provided in an intermediate layer of a wiring layer and a print element layer, a wiring layer and a temperature detection element formed on the first interlayer insulation film are connected by a first conductive plug which penetrates through the first interlayer insulation film. In addition, a wiring layer and a print element which are formed on the second interlayer insulation film formed on the first interlayer insulation film are connected by a second conductive plug which penetrates through the first and second interlayer insulation films. By manufacturing the element substrate by this arrangement, the thickness of an interlayer insulation film between a print element and a temperature detection element can be made thin, and the sensitivity of the temperature detection element can be improved.
    Type: Application
    Filed: October 3, 2018
    Publication date: April 11, 2019
    Inventors: Hideo Kanno, Nobuyuki Hirayama, Sadayoshi Sakuma
  • Publication number: 20190023007
    Abstract: A recording element substrate includes a substrate, a plurality of energy generating elements arranged on the substrate to form an element row, a plurality of supply ports arranged along the element row to form a supply port row, and a plurality of supply paths extending from the plurality of supply ports along the thickness direction of the substrate, wherein a plurality of beam portions disposed between adjacent supply ports in the direction of the supply port row has a plurality of conductor layers in which a conductor layer including a power supply conductor connected to the energy generating elements and a conductor layer including a ground conductor connected to the energy generating elements, are stacked along the thickness direction of the substrate, and wherein at least one of the plurality of conductor layers is occupied by one power supply conductor or one ground conductor.
    Type: Application
    Filed: September 21, 2018
    Publication date: January 24, 2019
    Inventors: Masataka Sakurai, Nobuyuki Hirayama, Ryo Kasai, Kengo Umeda, Hidenori Yamato, Masanobu Ohmura, Tatsuhito Goden
  • Publication number: 20180370233
    Abstract: An element substrate of a liquid ejection head includes: a base material; an insulating film positioned on the base material; a heating resistance element for generating heat energy for ejecting a liquid; a protective film for covering the heating resistance element; a first electrical wiring layer arranged in the insulating film, for supplying a current to the heating resistance element; a second electrical wiring layer arranged on a layer different from the first electrical wiring layer in the insulating film, for supplying a current to the heating resistance element; and at least one connecting member extending into the insulating film to connect the first electrical wiring layer and the heating resistance element, for causing the current to flow in a first direction, the heating resistance element including a connecting region, extending in a second direction intersecting the first direction, to which the at least one connecting member is connected.
    Type: Application
    Filed: June 27, 2018
    Publication date: December 27, 2018
    Inventors: RYO KASAI, NOBUYUKI HIRAYAMA, MASATAKA SAKURAI, KENGO UMEDA, HIDENORI YAMATO, MAKOTO TAKAGI, TATSUHITO GODEN, SADAYOSHI SAKUMA, NOBUYUKI SUZUKI, TORU ETO
  • Patent number: 10105949
    Abstract: A recording element substrate includes a substrate, a plurality of energy generating elements arranged on the substrate to form an element row, a plurality of supply ports arranged along the element row to form a supply port row, and a plurality of supply paths extending from the plurality of supply ports along the thickness direction of the substrate, wherein a plurality of beam portions disposed between adjacent supply ports in the direction of the supply port row has a plurality of conductor layers in which a conductor layer including a power supply conductor connected to the energy generating elements and a conductor layer including a ground conductor connected to the energy generating elements, are stacked along the thickness direction of the substrate, and wherein at least one of the plurality of conductor layers is occupied by one power supply conductor or one ground conductor.
    Type: Grant
    Filed: May 22, 2017
    Date of Patent: October 23, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masataka Sakurai, Nobuyuki Hirayama, Ryo Kasai, Kengo Umeda, Hidenori Yamato, Masanobu Ohmura, Tatsuhito Goden
  • Patent number: 10035346
    Abstract: An element substrate of a liquid ejection head includes: a base material; an insulating film positioned on the base material; a heating resistance element for generating heat energy for ejecting a liquid; a protective film for covering the heating resistance element; a first electrical wiring layer arranged in the insulating film, for supplying a current to the heating resistance element; a second electrical wiring layer arranged on a layer different from the first electrical wiring layer in the insulating film, for supplying a current to the heating resistance element; and at least one connecting member extending into the insulating film to connect the first electrical wiring layer and the heating resistance element, for causing the current to flow in a first direction, the heating resistance element including a connecting region, extending in a second direction intersecting the first direction, to which the at least one connecting member is connected.
    Type: Grant
    Filed: January 19, 2016
    Date of Patent: July 31, 2018
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Ryo Kasai, Nobuyuki Hirayama, Masataka Sakurai, Kengo Umeda, Hidenori Yamato, Makoto Takagi, Tatsuhito Goden, Sadayoshi Sakuma, Nobuyuki Suzuki, Toru Eto
  • Publication number: 20180170051
    Abstract: A print element substrate that includes a plurality of heaters and a plurality of temperature sensors provided in correspondence with a plurality of nozzles, comprises: a selecting unit that selects one temperature sensor from the plurality of temperature sensors and output a temperature signal; a determining unit that determines a discharge state of the nozzle based on the temperature signal output by the selecting unit; an outputting unit that, based on a determination result output from the determining unit, externally outputs a signal indicating the discharge state of the nozzle corresponding to the selected temperature sensor; and a masking unit that, in accordance with a change in selection of the temperature sensor by the selecting unit, masks the determination result output from the determining unit to the outputting unit during a predetermined time from a timing of the change.
    Type: Application
    Filed: November 27, 2017
    Publication date: June 21, 2018
    Inventors: Hiroyasu Nomura, Nobuyuki Hirayama
  • Publication number: 20180037029
    Abstract: According to embodiments of the present invention, an element substrate capable of detecting a temperature immediately below a heater with high sensitivity is provided. The element substrate has a multilayer structure, and includes a heater, a first wiring below a position where the heater is provided, and a second wiring below the first wiring. The element substrate further includes a temperature detection element formed by series-connecting a first conductive via for connecting the first wiring and the second wiring, a constant electric current source which supplies a constant electric current, and a voltage detection circuit which detects a voltage obtained by supplying the constant electric current to the temperature detection element.
    Type: Application
    Filed: July 11, 2017
    Publication date: February 8, 2018
    Inventor: Nobuyuki Hirayama
  • Publication number: 20170341377
    Abstract: A recording element substrate includes a substrate, a plurality of energy generating elements arranged on the substrate to form an element row, a plurality of supply ports arranged along the element row to form a supply port row, and a plurality of supply paths extending from the plurality of supply ports along the thickness direction of the substrate, wherein a plurality of beam portions disposed between adjacent supply ports in the direction of the supply port row has a plurality of conductor layers in which a conductor layer including a power supply conductor connected to the energy generating elements and a conductor layer including a ground conductor connected to the energy generating elements, are stacked along the thickness direction of the substrate, and wherein at least one of the plurality of conductor layers is occupied by one power supply conductor or one ground conductor.
    Type: Application
    Filed: May 22, 2017
    Publication date: November 30, 2017
    Inventors: Masataka Sakurai, Nobuyuki Hirayama, Ryo Kasai, Kengo Umeda, Hidenori Yamato, Masanobu Ohmura, Tatsuhito Goden
  • Patent number: 9724919
    Abstract: A printhead manufacturing method includes preparing a printing element substrate including a receiver, first and second input pads, and plural selection pads, and preparing a head substrate including first and second transmission lines. The receiver includes first and second terminals for receiving signals, and the first and second input pads are connected to the first and second terminals, respectively, and the plural selection pads connected to the second terminal via at least two from among plural resistive elements to selectively obtain one of plural combined resistances. At least one of the plural selection pads is selected to be connected to the first transmission line to obtain a value of the one of the plural combined resistances. The selected selection pad is connected to the first transmission line, the first input pad is connected to the first transmission line, and the second input pad is connected to the second transmission line.
    Type: Grant
    Filed: December 16, 2011
    Date of Patent: August 8, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventors: Nobuyuki Hirayama, Ryo Kasai, Kengo Umeda
  • Patent number: 9688067
    Abstract: An element substrate capable of suppressing occurrence of electromagnetic noise upon driving printing elements on an element substrate with long wiring lengths, preventing an operation error, and printing a high-quality image is provided. In the element substrate, plural element substrates each including printing elements are arrayed in an arrayed direction of the printing elements. Each element substrate including a wiring for supplying a driving power to drive the printing elements, and a ground wiring from the printing elements is configured as follows. Each element substrate includes a delay circuit for delaying a heat enable signal to drive the printing elements and supplying it to each printing element, and a switchover circuit for switching over, in accordance with a control signal, a delay sequence when supplying the heat enable signal to each printing element.
    Type: Grant
    Filed: January 12, 2016
    Date of Patent: June 27, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kengo Umeda, Nobuyuki Hirayama