Patents by Inventor Yasunori Takei

Yasunori Takei 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: 20210300052
    Abstract: A liquid supply apparatus includes a liquid storage tank in communication with a liquid ejecting head that ejects liquid and a cartridge configured to be detachably provided to the liquid storage tank. The liquid storage tank includes an atmosphere communication portion in communication with the atmosphere and a first connecting portion that, in a state where the cartridge is attached to the liquid storage tank, enables the cartridge to be in liquid communication with the liquid storage tank. The liquid storage tank also includes a second connecting portion that, in the state where the cartridge is attached to the liquid storage tank, is connected to the cartridge so as to be liquid-tight with the cartridge and enables the cartridge to be in gaseous communication with the atmosphere communication portion.
    Type: Application
    Filed: March 22, 2021
    Publication date: September 30, 2021
    Inventors: Yasunori TAKEI, Hiroki HAYASHI, Hiroshi KOSHIKAWA
  • Publication number: 20210300055
    Abstract: A technique with which deterioration in a function of detecting the remaining amount of liquid can be prevented even in a case where the liquid is thickened or solidified is to be provided. A liquid ejection apparatus is provided with a liquid ejection head configured to eject supplied liquid, a storage unit configured to store the liquid to be supplied to the liquid ejection head, a pivot member configured to be immersed in the liquid stored in the storage unit and be revolvable according to the amount of the liquid, and a detection unit configured to detect the amount of the liquid by use of the pivot member, and the liquid ejection apparatus includes a pivot unit configured to force the pivot member to pivotally move.
    Type: Application
    Filed: March 22, 2021
    Publication date: September 30, 2021
    Inventors: Hiroshi KOSHIKAWA, Hiroki HAYASHI, Hiroshi YAMADA, Yasunori TAKEI
  • Publication number: 20210229448
    Abstract: An ink-jet printing apparatus includes an ink-cartridge mounting unit to which an ink cartridge having a first ink chamber containing ink is to be mounted, and a second ink chamber. The second ink chamber stores ink supplied from the first ink chamber. The ink-jet printing apparatus is configured such that, in a case where the ink cartridge is mounted to the ink-cartridge mounting unit, the second ink chamber can be viewed from outside of the ink-jet printing apparatus. An equation 0.5?L?d?1.2 L is satisfied, where d is a length of the second ink chamber, and L is a length of the ink cartridge in a direction in which the ink cartridge is inserted into the ink-jet printing apparatus.
    Type: Application
    Filed: January 20, 2021
    Publication date: July 29, 2021
    Inventors: Hiroshi Miyamot, Yasunori Takei
  • Patent number: 10406813
    Abstract: An ejection port includes a first ejection port that is an opening portion formed on an outer surface side of a recessed portion formed in an outer surface of a nozzle plate, a second ejection port positioned on a bottom surface side of the recessed portion, the second ejection port including an opening portion that is smaller than the first ejection port, and a plurality of protrusions that extend from an outer edge portion of the first ejection port towards a center portion of the second ejection port through the second ejection port, in which a distance between tip portions of the plurality of protrusions and the substrate is larger than a distance between an outer edge portion of the second ejection port and the substrate.
    Type: Grant
    Filed: May 23, 2018
    Date of Patent: September 10, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yasunori Takei
  • Publication number: 20180339511
    Abstract: An ejection port includes a first ejection port that is an opening portion formed on an outer surface side of a recessed portion formed in an outer surface of a nozzle plate, a second ejection port positioned on a bottom surface side of the recessed portion, the second ejection port including an opening portion that is smaller than the first ejection port, and a plurality of protrusions that extend from an outer edge portion of the first ejection port towards a center portion of the second ejection port through the second ejection port, in which a distance between tip portions of the plurality of protrusions and the substrate is larger than a distance between an outer edge portion of the second ejection port and the substrate.
    Type: Application
    Filed: May 23, 2018
    Publication date: November 29, 2018
    Inventor: Yasunori Takei
  • Patent number: 9283749
    Abstract: Provided are a liquid ejecting method, a liquid ejecting device, and a liquid ejecting system which can avoid damage of an electro-thermal conversion element caused by cavitation and can prolong a life thereof even in a case that handling with a configuration of an ejecting port is difficult. For that purpose, ejection is performed for a low-duty region by controlling such that variation in an ejection speed is made smaller, and ejection is performed for a high-duty region by controlling such that variation in the ejection speed is made larger.
    Type: Grant
    Filed: February 20, 2015
    Date of Patent: March 15, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yoshihiro Hamada, Michinari Mizutani, Yasunori Takei, Toshikazu Nagatsuka
  • Publication number: 20150343781
    Abstract: The invention provides a liquid ejection head equipped with an energy generating element generating energy utilized for ejecting a liquid, a liquid supply port provided at a surface on which the energy generating element is provided for supplying the liquid to the energy generating element, a liquid flow path for supplying the liquid to the energy generating element from the liquid supply port and a rib extending from the liquid supply port toward an inlet of the liquid flow path, wherein an end portion of the rib on the side of the liquid flow path is provided at a position deviated from a center line of the liquid flow path.
    Type: Application
    Filed: May 19, 2015
    Publication date: December 3, 2015
    Inventors: Yoshihiro HAMADA, Masaki OIKAWA, Hiroshi YAMADA, Yasunori TAKEI, Atsushi OMURA
  • Patent number: 9193160
    Abstract: The invention provides a liquid ejection head equipped with an energy generating element generating energy utilized for ejecting a liquid, a liquid supply port provided at a surface on which the energy generating element is provided for supplying the liquid to the energy generating element, a liquid flow path for supplying the liquid to the energy generating element from the liquid supply port and a rib extending from the liquid supply port toward an inlet of the liquid flow path, wherein an end portion of the rib on the side of the liquid flow path is provided at a position deviated from a center line of the liquid flow path.
    Type: Grant
    Filed: May 19, 2015
    Date of Patent: November 24, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yoshihiro Hamada, Masaki Oikawa, Hiroshi Yamada, Yasunori Takei, Atsushi Omura
  • Patent number: 9138995
    Abstract: A liquid ejection head in which the adverse effect of a heating resistor element due to cavitation is reduced and a printing apparatus employing this liquid ejection head are provided. When a length of a heating resistor element in a direction in which ink is to be supplied is defined by L, the center of an ejection port is shifted, at a distance equal to or longer than L/7 toward a location of an ink supply port, from the center of the heating resistor element, viewed in a direction in which ink is to be ejected. When a length of the ejection portion in the direction in which ink is to be ejected is defined as l and a length of a bubble generation chamber in the direction in which the liquid is to be ejected is defined as h, l/h is equal to or less than 2.
    Type: Grant
    Filed: July 23, 2014
    Date of Patent: September 22, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Michinari Mizutani, Yasunori Takei, Yoshihiro Hamada, Masaki Oikawa, Toshikazu Nagatsuka
  • Publication number: 20150239240
    Abstract: Provided are a liquid ejecting method, a liquid ejecting device, and a liquid ejecting system which can avoid damage of an electro-thermal conversion element caused by cavitation and can prolong a life thereof even in a case that handling with a configuration of an ejecting port is difficult. For that purpose, ejection is performed for a low-duty region by controlling such that variation in an ejection speed is made smaller, and ejection is performed for a high-duty region by controlling such that variation in the ejection speed is made larger.
    Type: Application
    Filed: February 20, 2015
    Publication date: August 27, 2015
    Inventors: Yoshihiro Hamada, Michinari Mizutani, Yasunori Takei, Toshikazu Nagatsuka
  • Publication number: 20150029268
    Abstract: A liquid ejection head that the adverse effect of a heating resistor element due to cavitation is reduced and a printing apparatus employing this liquid ejection head are provided. When a length of a heating resistor element in a direction in which ink is to be supplied is defined by L, the center of an ejection port is shifted, at a distance of equal to or longer than L/7 toward a location of an ink supply port, from the center of the heating resistor element, viewed in a direction in which ink is to be ejected. When a length of the ejection portion in the direction in which ink is to be ejected is defined as l and a length of a bubble generation chamber in the direction in which the liquid is to be ejected is defined as h, l/h is equal to or smaller than 2.
    Type: Application
    Filed: July 23, 2014
    Publication date: January 29, 2015
    Inventors: Michinari Mizutani, Yasunori Takei, Yoshihiro Hamada, Masaki Oikawa, Toshikazu Nagatsuka
  • Patent number: 8936350
    Abstract: A print head includes an energy generating element, a chamber for accommodating liquid, and an ejection opening for ejecting liquid from the chamber, thus applying the energy to the liquid in the chamber from the energy generating element to eject the liquid from the ejection opening, wherein the ejection opening includes at least two projections convex to an inside of the ejection opening in a cross section perpendicular to a liquid ejecting direction and has a tapered angle ?1 in regard to the liquid ejecting direction, enabling a meniscus of the liquid to be formed therebetween at the liquid ejecting time, and an outer edge portion has a tapered angle ?2 in regard to the liquid ejecting direction, wherein the tapered angles ?1 and ?2 are defined to meet a formula of 0°??1?10° and a formula of ?2>?1.
    Type: Grant
    Filed: May 31, 2012
    Date of Patent: January 20, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yasunori Takei, Kenji Yabe, Takuma Kodoi, Ken Ikegame, Isamu Horiuchi, Hyou Takahashi
  • Publication number: 20150005399
    Abstract: A method for producing synthetic gas with which a virtually soot-free synthetic gas having a good composition can be efficiently obtained by a simple device using a liquid biofuel as the starting material, and it is thereby possible to produce a high-quality liquid fuel such as methanol, gasoline or kerosene. Steam and a liquid biofuel produced by pyrolysis of a biomass are fed to the gasification space inside a reactor tube that is not loaded with a catalyst inside the reactor tube and heated to 800 to 1,200° C. from the outside via the reactor tube walls to induce an endothermic reaction and thereby a steam reforming chemical reaction between the steam and the liquid biofuel. By setting the molar ratio of the fed steam and carbon in the liquid biofuel ([H2O]/[C]) at 0.3 or higher, a synthetic gas having a good composition that is virtually free of tar and soot and is primarily H2 and CO is obtained.
    Type: Application
    Filed: November 29, 2012
    Publication date: January 1, 2015
    Inventors: Masayasu Sakai, Nobuaki Murakami, Nobutaka Morimitsu, Yasunori Takei, Akira Hasegawa
  • Patent number: 8827422
    Abstract: Without being dependent on design changes, a liquid ejection head and a method of production thereof are provided in which when time-division driving, liquid drop landing deviance in the direction of printing is capable of being corrected. In order to achieve this, before performing an exposure in order to form an ejection port, after forming a cavity that is shifted with respect to the location at which the ejection port is formed, exposure is performed.
    Type: Grant
    Filed: May 25, 2012
    Date of Patent: September 9, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takuma Kodoi, Yasunori Takei, Kenji Yabe, Isamu Horiuchi, Hyo Takahashi, Ken Ikegame
  • Patent number: 8785110
    Abstract: A liquid ejection head is manufactured by forming a dent representing a substantially spherical profile so as to include a position for forming an ejection port on a surface of a photosensitive resin layer, then forming a latent image of the ejection port in the dent by an exposure treatment using a projection lens system, and developing the latent image. The center of the top surface of the latent image is shifted to the incoming side of the beam of exposure light from the lowest point of the dent.
    Type: Grant
    Filed: July 11, 2013
    Date of Patent: July 22, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takuma Kodoi, Yasunori Takei, Kenji Yabe, Isamu Horiuchi, Hyou Takahashi, Ken Ikegame
  • Publication number: 20140125735
    Abstract: A print head includes an energy generating element, a chamber for accommodating liquid, and an ejection opening for ejecting liquid from the chamber, thus applying the energy to the liquid in the chamber from the energy generating element to eject the liquid from the ejection opening, wherein the ejection opening includes at least two projections convex to an inside of the ejection opening in a cross section perpendicular to a liquid ejecting direction and has a tapered angle ?1 in regard to the liquid ejecting direction, enabling a meniscus of the liquid to be formed therebetween at the liquid ejecting time, and an outer edge portion has a tapered angle ?2 in regard to the liquid ejecting direction, wherein the tapered angles ?1 and ?2 are defined to meet a formula of 0°??1?10° and a formula of ?2>?1.
    Type: Application
    Filed: May 31, 2012
    Publication date: May 8, 2014
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Yasunori Takei, Kenji Yabe, Takuma Kodoi, Ken Ikegame, Isamu Horiuchi, Hyou Takahashi
  • Patent number: 8703398
    Abstract: The manufacturing method includes forming, on a surface of a negative photosensitive resin layer formed on a substrate, a hollow having inclinations at both sides in a cross section taken along a plane perpendicular to a row direction of the ejection orifice, and then forming a latent image in the hollow, thereby forming the ejection orifice so that an angle between a side surface portion thereof and a normal to the outer opening in a cross section of the ejection orifice taken along a plane which passes through a center of the ejection orifice and is perpendicular to the row direction is larger than an angle between the side surface portion and the normal to the outer opening in a cross section of the ejection orifice taken along a plane which includes a center line of the ejection orifice in the row direction and is perpendicular to a substrate surface.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: April 22, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Ken Ikegame, Isamu Horiuchi, Hyo Takahashi, Takuma Kodoi, Yasunori Takei, Kenji Yabe
  • Patent number: 8686811
    Abstract: A stripline filter having a substrate, a grounding electrode, principal-surface lines, side-surface lines, and common electrodes, and is mounted on a set substrate by soldering. The side-surface lines are disposed on a side surface of the substrate, and are wetted by solder during soldering. Each of the common electrodes is connected to a corresponding one of the principal-surface lines. The common electrodes are also connected to the grounding electrode via the side-surface lines.
    Type: Grant
    Filed: November 18, 2011
    Date of Patent: April 1, 2014
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Yasunori Takei, Tatsuya Tsujiguchi, Motoharu Hiroshima
  • Patent number: 8646863
    Abstract: An ink jet recording head includes a nozzle array and discharge energy generation elements. The nozzles include discharge ports to discharge liquid when recording, pressure chambers to communicate with respective discharge ports, and liquid flow paths to supply liquid to the respective pressure chambers. The discharge energy generation elements apply discharge energy to the pressure chambers to discharge liquid from the nozzles in a predetermined order during time-division driving. Arranging intervals of the liquid flow paths take at least two different values. When a drive timing difference average between the adjacent discharge energy generation elements is calculated by a particular expression, a relationship of D?Y is satisfied between an interval D and an interval Y in a k-th discharge energy generation element and a k+1-th discharge energy generation element positioned adjacent to the k-th discharge energy generation element.
    Type: Grant
    Filed: January 28, 2011
    Date of Patent: February 11, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yasunori Takei
  • Publication number: 20140030659
    Abstract: A liquid ejection head is manufactured by forming a dent representing a substantially spherical profile so as to include a position for forming an ejection port on a surface of a photosensitive resin layer, then forming a latent image of the ejection port in the dent by an exposure treatment using a projection lens system, and developing the latent image. The center of the top surface of the latent image is shifted to the incoming side of the beam of exposure light from the lowest point of the dent.
    Type: Application
    Filed: July 11, 2013
    Publication date: January 30, 2014
    Inventors: Takuma Kodoi, Yasunori Takei, Kenji Yabe, Isamu Horiuchi, Hyou Takahashi, Ken Ikegame