Patents by Inventor Masataka Kato

Masataka 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: 10457044
    Abstract: A liquid discharge head includes a plurality of recording element substrates each having an energy generating element configured to generate energy for discharging liquid from a discharge port, and a sealing member with which a surround of each of the plurality of recording element substrates is filled. Each of the plurality of recording element substrates includes a recessed portion formed on an end surface facing a neighboring recording element substrate, and in the recessed portion, a gap between neighboring recording element substrates is wider than a gap between element surfaces on which the energy generating element is provided.
    Type: Grant
    Filed: March 31, 2017
    Date of Patent: October 29, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masataka Kato, Tomohiro Takahashi, Shimpei Otaka
  • Patent number: 10369797
    Abstract: Provided is an inkjet printing apparatus capable of performing preliminary discharge without the influence of mist while suppressing degradation in throughput regardless of a preliminary discharge time. Specifically, an inkjet printing apparatus that performs a wiping operation on a nozzle arrangement surface provided with nozzles discharging an ink in a print head includes a wiping determination unit that determines whether to perform the wiping operation before preliminary discharge based on the amount of the preliminary discharge to be performed.
    Type: Grant
    Filed: November 30, 2017
    Date of Patent: August 6, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shin Genta, Masaya Uetsuki, Toshimitsu Danzuka, Kazuo Suzuki, Yoshinori Nakagawa, Masataka Kato, Tsuyoshi Ibe, Tomoki Yamamuro
  • Publication number: 20190232671
    Abstract: According to an embodiment of this invention, an apparatus comprises: a detachable inktank containing ink; a subtank containing the ink supplied from the inktank; a printhead configured to discharge the ink supplied from the subtank; an ink supply path connecting the subtank to the printhead; a valve arranged on the ink supply path; a supply unit configured to supply the ink from the inktank to the subtank by repeatedly opening and closing the valve; a suction unit configured to suck the ink from the printhead; and a control unit configured to control, when the inktank is attached, the supply unit to operate for a predetermined number of times to supply the ink from the inktank to the subtank, and to subsequently control the suction unit to operate to supply the ink from the subtank to the printhead.
    Type: Application
    Filed: January 22, 2019
    Publication date: August 1, 2019
    Inventors: Toshimitsu Danzuka, Naoaki Wada, Kazuki Narumi, Tomoki Yamamuro, Hiroshi Taira, Akiko Aichi, Noboru Kunimine, Taku Yokozawa, Kazuo Suzuki, Kazuhiko Sato, Masataka Kato, Shin Genta, Hiroto Kango
  • Patent number: 10350893
    Abstract: An inkjet printing apparatus includes a head, a platen, a platen absorbent that temporarily stores ink ejected from the head, a waste ink storage container that stores the ink discharged from the platen absorbent, and an estimation unit that, in a case where the platen is divided into a plurality of regions in a direction intersecting a conveyance direction of the printing medium, estimates an amount of ink stored in the waste ink storage container based on a position of a region to which the ink is ejected by the head and an amount of ink ejected to the region.
    Type: Grant
    Filed: June 19, 2017
    Date of Patent: July 16, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yoshinori Nakagawa, Atsushi Arai, Masaya Uetsuki, Toshimitsu Danzuka, Kazuo Suzuki, Masataka Kato, Tsuyoshi Ibe, Shin Genta, Tatsuaki Orihara, Tomoki Yamamuro
  • Publication number: 20190176467
    Abstract: An object of the present invention is to quickly correct a temperature sensor for an ejection head by, both efficiently and in a brief time, estimating a detected temperature of the temperature sensor for the ejection head in a case where the temperature of the ejection head of liquid becomes sufficiently close to an environment temperature. The temperature of a print head 1 is detected by a diode sensor 17 and the environment temperature is detected by a thermistor 10. Based on a change in the detected temperature of the diode sensor 17 at the time of filling of ink for the print head 1, the detected temperature of the diode sensor 17 in a case where the temperature of the print head 1 becomes close to the environment temperature is estimated as an estimated detected temperature. Based on a difference between the estimated detected temperature and the environment temperature, a correction value of the detected temperature of the diode sensor 17 is set.
    Type: Application
    Filed: December 5, 2018
    Publication date: June 13, 2019
    Inventors: Satoshi Azuma, Kazuhiko Sato, Kazuo Suzuki, Yoshinori Nakajima, Masataka Kato, Mitsutoshi Nagamura, Shin Genta, Shingo Nishioka, Sae Tabuchi
  • Publication number: 20190160820
    Abstract: A method of manufacturing an inkjet head substrate is provided. The inkjet head substrate includes an ink supply port having a through portion and a non-through portion, and the non-through portion is disposed at a position closer than the through portion to the energy generating element. The method includes disposing a mask having an opening that has a relatively large opening-width portion and a relatively small opening-width portion. The method also includes forming the through portion in the substrate at a position corresponding to the relatively large opening-width portion and the non-through portion in the substrate at a position corresponding to the relatively small opening-width portion by performing reactive ion etching on the substrate through the opening of the mask in one operation.
    Type: Application
    Filed: November 8, 2018
    Publication date: May 30, 2019
    Inventors: Takayuki Kamimura, Masataka Kato, Hiroshi Higuchi, Atsunori Terasaki, Shuichi Tamatsukuri
  • Publication number: 20190001675
    Abstract: A liquid discharge head includes a substrate that is provided with. a supply passage having an opening; an energy generating element that is disposed on a surface of the substrate; an electric wiring layer; an insulation layer; and a discharge port member that forms a discharge port. The insulation layer has an end portion adjacent to the opening of the supply passage and set back from an edge of the opening of the supply passage toward a side where the energy generating element is disposed. The electric wiring layer includes a plurality of electric wiring layers layered on each other.
    Type: Application
    Filed: June 20, 2018
    Publication date: January 3, 2019
    Inventors: Masataka Kato, Toshiyasu Sakai, Atsunori Terasaki, Takayuki Kamimura, Shuichi Tamatsukuri, Hiroshi Higuchi
  • Publication number: 20180361742
    Abstract: Provided is a liquid ejection head substrate, in which a plurality of units are arranged. Each of the units includes: a pressure generating element formed on a first surface of a support substrate; and a pair of independent liquid chambers, which are formed on both sides of the pressure generating element so as to be opposed to each other, and are opened to the first surface of the support substrate. The liquid ejection head substrate includes, in the support substrate: a first common liquid chamber communicating to a plurality of independent liquid chambers on one side of the pair of independent liquid chambers; a second common liquid chamber communicating to a plurality of independent liquid chambers on another side of the pair of independent liquid chambers; and a partition wall separating the first common liquid chamber and the second common liquid chamber from each other.
    Type: Application
    Filed: June 15, 2018
    Publication date: December 20, 2018
    Inventors: Hiroshi Higuchi, Toshiyasu Sakai, Masataka Kato, Takayuki Kamimura
  • Publication number: 20180257380
    Abstract: An inkjet recording apparatus includes a recording unit, a first ink storage unit, a second ink storage unit, a discharge unit, a first detection unit configured to detect that an amount of the ink stored in the first ink storage unit is below a first predetermined amount, and a second detection unit configured to detect that an amount of the ink stored in the second ink storage unit is below a second predetermined amount. The inkjet recording apparatus further includes a control unit configured to control the discharge operation after the detection by the first detection unit and the detection by the second detection unit based on a detection timing of the first detection unit and a detection timing of the second detection unit.
    Type: Application
    Filed: March 6, 2018
    Publication date: September 13, 2018
    Inventors: Toshimitsu Danzuka, Taku Yokozawa, Masataka Kato, Akiko Aichi, Shin Genta, Kazuki Narumi
  • Publication number: 20180117907
    Abstract: A printing apparatus includes a printing head configured to eject a first ink and a second ink, wherein the second ink generates less deposition than the first ink, an ink absorber configured to absorb the ink ejected from the printing head, a detection unit configured to detect a state of the ink absorber through an optical method, and a control unit configured to cause the printing head to eject the second ink to the ink absorber based on a detection result of the detection unit.
    Type: Application
    Filed: October 27, 2017
    Publication date: May 3, 2018
    Inventors: Tomoki Yamamuro, Atsushi Arai, Masaya Uetsuki, Toshimitsu Danzuka, Kazuo Suzuki, Yoshinori Nakagawa, Masataka Kato, Tsuyoshi Ibe, Shin Genta, Tatsuaki Orihara
  • Patent number: 9925776
    Abstract: A method of manufacturing a plurality of semiconductor chips for a liquid discharge head from a substrate includes forming trenches of a linear form through etching from the second surface along intended cutting portions, forming modified portions in the substrate by irradiating a laser beam from the first surface side along the intended cutting portions, and splitting the substrate into the plurality of semiconductor chips for a liquid discharge head, by cutting the substrate with stress applied to the modified portions. The intended cutting portions include inclined portions extending in a direction inclined with respect to a crystal orientation plane of the substrate and uninclined portions extending in a direction along the crystal orientation plane of the substrate, and the trenches are formed at least along the inclined portions.
    Type: Grant
    Filed: June 14, 2017
    Date of Patent: March 27, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tomohiro Takahashi, Toru Kawaguchi, Toshiyasu Sakai, Masataka Kato
  • Publication number: 20180079218
    Abstract: Provided is an inkjet printing apparatus capable of performing preliminary discharge without the influence of mist while suppressing degradation in throughput regardless of a preliminary discharge time. Specifically, an inkjet printing apparatus that performs a wiping operation on a nozzle arrangement surface provided with nozzles discharging an ink in a print head includes a wiping determination unit that determines whether to perform the wiping operation before preliminary discharge based on the amount of the preliminary discharge to be performed.
    Type: Application
    Filed: November 30, 2017
    Publication date: March 22, 2018
    Inventors: Shin Genta, Masaya Uetsuki, Toshimitsu Danzuka, Kazuo Suzuki, Yoshinori Nakagawa, Masataka Kato, Tsuyoshi Ibe, Tomoki Yamamuro
  • Patent number: 9914295
    Abstract: A method for manufacturing a structure having a substrate in which holes are formed and a photosensitive resin layer provided on the substrate in such a manner as to cover at least a part of the holes includes a process of preparing a substrate in which holes formed by a surface in which a wavelike shape is formed and a photosensitive resin layer provided on the substrate in such a manner as to cover at least a part of the holes and an exposure process of exposing the photosensitive resin layer on the substrate.
    Type: Grant
    Filed: March 2, 2016
    Date of Patent: March 13, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hiroshi Higuchi, Masataka Kato, Yoshinao Ogata, Toshiyasu Sakai, Takayuki Kamimura, Tetsushi Ishikawa, Atsunori Terasaki, Masahiko Kubota, Ryoji Kanri, Yoshiyuki Fukumoto, Yasuaki Tominaga, Tamaki Sato, Masafumi Morisue
  • Patent number: 9902156
    Abstract: A recording device including a recording head, a tank, a valve capable of being switched between an open state where ink is supplied from the tank to the recording head and a closed state where the ink is not supplied, a cap covering a discharge port surface, a pump configured to make a pressure of an inside of the cap negative, an acquiring unit configured to acquire information on an atmospheric pressure of an environment where the recording device is placed, and a control unit configured to perform a suction operation of sucking the ink from the discharge port surface by driving the pump when the valve is in the closed state, making the pressure of the inside of the cap negative, and then switching the valve to the open state and to control the suction operation based on the acquired information.
    Type: Grant
    Filed: May 17, 2016
    Date of Patent: February 27, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shin Genta, Masaya Uetsuki, Toshimitsu Danzuka, Kazuo Suzuki, Yoshinori Nakagawa, Masataka Kato, Tsuyoshi Ibe, Tomoki Yamamuro
  • Patent number: 9862195
    Abstract: Provided is an inkjet printing apparatus capable of performing preliminary discharge without the influence of mist while suppressing degradation in throughput regardless of a preliminary discharge time. Specifically, an inkjet printing apparatus that performs a wiping operation on a nozzle arrangement surface provided with nozzles discharging an ink in a print head includes a wiping determination unit that determines whether to perform the wiping operation before preliminary discharge based on the amount of the preliminary discharge to be performed.
    Type: Grant
    Filed: May 25, 2016
    Date of Patent: January 9, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shin Genta, Masaya Uetsuki, Toshimitsu Danzuka, Kazuo Suzuki, Yoshinori Nakagawa, Masataka Kato, Tsuyoshi Ibe, Tomoki Yamamuro
  • Publication number: 20170368830
    Abstract: An inkjet printing apparatus includes a head, a platen, a platen absorbent that temporarily stores ink ejected from the head, a waste ink storage container that stores the ink discharged from the platen absorbent, and an estimation unit that, in a case where the platen is divided into a plurality of regions in a direction intersecting a conveyance direction of the printing medium, estimates an amount of ink stored in the waste ink storage container based on a position of a region to which the ink is ejected by the head and an amount of ink ejected to the region.
    Type: Application
    Filed: June 19, 2017
    Publication date: December 28, 2017
    Inventors: Yoshinori Nakagawa, Atsushi Arai, Masaya Uetsuki, Toshimitsu Danzuka, Kazuo Suzuki, Masataka Kato, Tsuyoshi Ibe, Shin Genta, Tatsuaki Orihara, Tomoki Yamamuro
  • Publication number: 20170361616
    Abstract: A method of manufacturing a plurality of semiconductor chips for a liquid discharge head from a substrate includes forming trenches of a linear form through etching from the second surface along intended cutting portions, forming modified portions in the substrate by irradiating a laser beam from the first surface side along the intended cutting portions, and splitting the substrate into the plurality of semiconductor chips for a liquid discharge head, by cutting the substrate with stress applied to the modified portions. The intended cutting portions include inclined portions extending in a direction inclined with respect to a crystal orientation plane of the substrate and uninclined portions extending in a direction along the crystal orientation plane of the substrate, and the trenches are formed at least along the inclined portions.
    Type: Application
    Filed: June 14, 2017
    Publication date: December 21, 2017
    Inventors: Tomohiro Takahashi, Toru Kawaguchi, Toshiyasu Sakai, Masataka Kato
  • Publication number: 20170297344
    Abstract: An inkjet printing apparatus capable of detecting an ink amount in an attachable inktank at a multi-level with a simple arrangement has the following arrangement. That is, the printing apparatus includes a printhead which prints an image by discharging ink, an inktank which contains the ink supplied to the printhead, a reservoir capable of temporarily containing the ink supplied from the inktank, and a detection unit which performs a detection operation of detecting whether the ink amount in the inktank is more than a predetermined amount. Then, the detection unit performs the detection operation in a state in which the reservoir contains the ink supplied from the inktank.
    Type: Application
    Filed: March 27, 2017
    Publication date: October 19, 2017
    Inventors: Tsuyoshi Ibe, Masaya Uetsuki, Toshimitsu Danzuka, Kazuo Suzuki, Yoshinori Nakagawa, Masataka Kato, Shin Genta, Tomoki Yamamuro
  • Patent number: 9789689
    Abstract: A method of forming a through-substrate having a first surface and a second surface opposite to the first surface, the method causing the first surface to communicate with the second surface through the substrate, the method including: a first step that forms a first trench from the first surface side of the substrate using dry etching, the first trench having side surfaces on which protective film is formed; and a second step that forms a second trench from the second surface side using dry etching, the second trench communicating with the first trench having the side surfaces on which the protective film is formed.
    Type: Grant
    Filed: June 2, 2015
    Date of Patent: October 17, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Yoshinao Ogata, Seiko Minami, Masataka Kato, Masaya Uyama, Toshiyasu Sakai, Hiroshi Higuchi
  • Publication number: 20170282554
    Abstract: A liquid discharge head includes a plurality of recording element substrates each having an energy generating element configured to generate energy for discharging liquid from a discharge port, and a sealing member with which a surround of each of the plurality of recording element substrates is filled. Each of the plurality of recording element substrates includes a recessed portion formed on an end surface facing a neighboring recording element substrate, and in the recessed portion, a gap between neighboring recording element substrates is wider than a gap between element surfaces on which the energy generating element is provided.
    Type: Application
    Filed: March 31, 2017
    Publication date: October 5, 2017
    Inventors: Masataka Kato, Tomohiro Takahashi, Shimpei Otaka