Patents by Inventor Nobuhito Yamaguchi

Nobuhito Yamaguchi 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: 10549554
    Abstract: A platen includes: a supporting portion that can support a sheet; a suction unit that sucks the sheet in such a manner as to attach the sheet to the supporting portion; a first ink receiver that receives ink ejected downstream of the leading end of the sheet passing the supporting portion; and a second ink receiver that receives ink ejected upstream of the trailing end of the sheet passing the supporting portion.
    Type: Grant
    Filed: August 7, 2018
    Date of Patent: February 4, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tetsuji Kurata, Seiji Ogasawara, Masakazu Tsukuda, Takahide Onuma, Yasunori Saito, Arihito Miyakoshi, Masahiko Kubota, Yusuke Imahashi, Nobuhito Yamaguchi, Hiroshi Arimizu, Yoshinori Itoh
  • Patent number: 10155388
    Abstract: A blowout port for gas is efficiently configured without impairing mist collection performance. Two blowout ports for gas are adjacent to each other by interposing a partition. An end of the partition is provided at a position near a deep side of the two blowout ports relative to ends of the two blowout ports so as to form a step.
    Type: Grant
    Filed: January 25, 2017
    Date of Patent: December 18, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yusuke Imahashi, Masahiko Kubota, Hiroshi Arimizu, Nobuhito Yamaguchi, Arihito Miyakoshi, Yoshinori Itoh
  • Patent number: 10144217
    Abstract: Gas is ejected toward a region between a liquid ejection head and a recording medium so as to enlarge and stabilize a vortex generated by an airflow generated by liquid droplets ejected from ejection ports. Accordingly, an airflow turbulence generated between the liquid ejection head and the recording medium is reduced and displacements of positions at which the liquid droplets are applied due to the airflow turbulence are reduced.
    Type: Grant
    Filed: March 1, 2016
    Date of Patent: December 4, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventors: Arihito Miyakoshi, Ken Tsuchii, Nobuhito Yamaguchi, Hiroshi Arimizu, Yumi Komamiya, Koichi Ishida
  • Publication number: 20180339530
    Abstract: A platen includes: a supporting portion that can support a sheet; a suction unit that sucks the sheet in such a manner as to attach the sheet to the supporting portion; a first ink receiver that receives ink ejected downstream of the leading end of the sheet passing the supporting portion; and a second ink receiver that receives ink ejected upstream of the trailing end of the sheet passing the supporting portion.
    Type: Application
    Filed: August 7, 2018
    Publication date: November 29, 2018
    Inventors: Tetsuji Kurata, Seiji Ogasawara, Masakazu Tsukuda, Takahide Onuma, Yasunori Saito, Arihito Miyakoshi, Masahiko Kubota, Yusuke Imahashi, Nobuhito Yamaguchi, Hiroshi Arimizu, Yoshinori Itoh
  • Patent number: 10124608
    Abstract: A platen disposed at a position at which the platen faces a printing head includes a contact portion that comes into contact with a recording medium, a non-contact portion that does not come into contact with the recording medium, and an ink receiving portion that receives ink ejected to beyond the recording medium. A recessed portion is formed between the ink receiving portion and the contact portion in the width direction of the recording medium so as to be lower than the contact portion in the vertical direction. A supply portion that supplies air to the recessed portion is formed upstream of the recessed portion in the conveyance direction of the recording medium.
    Type: Grant
    Filed: March 17, 2017
    Date of Patent: November 13, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventors: Arihito Miyakoshi, Masahiko Kubota, Yusuke Imahashi, Nobuhito Yamaguchi, Hiroshi Arimizu, Yoshinori Itoh
  • Patent number: 10071572
    Abstract: A platen includes: a supporting portion that can support a sheet; a suction unit that sucks the sheet in such a manner as to attach the sheet to the supporting portion; a first ink receiver that receives ink ejected downstream of the leading end of the sheet passing the supporting portion; and a second ink receiver that receives ink ejected upstream of the trailing end of the sheet passing the supporting portion.
    Type: Grant
    Filed: May 20, 2016
    Date of Patent: September 11, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tetsuji Kurata, Seiji Ogasawara, Masakazu Tsukuda, Takahide Onuma, Yasunori Saito, Arihito Miyakoshi, Masahiko Kubota, Yusuke Imahashi, Nobuhito Yamaguchi, Hiroshi Arimizu, Yoshinori Itoh
  • Patent number: 10029496
    Abstract: An object of the present invention is to provide an ink jet printing apparatus that can alleviate an adverse influence by ink mist or airflow turbulence with an inexpensive and small-sized configuration without using power. A printing unit includes a first opening that is parallel to a main scanning direction and is formed at a first surface facing a space defined between an ejection port surface having ejection ports formed thereat and a print medium and a second opening formed at a second surface that is parallel to the main scanning direction and different from the first surface. The first opening and the second opening communicate with each other via a first communication path. The first opening and the second opening are formed in different pressure regions, respectively, in which pressures different from each other are produced when the printing unit is moved in the main scanning direction.
    Type: Grant
    Filed: November 22, 2016
    Date of Patent: July 24, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hiroshi Arimizu, Masahiko Kubota, Nobuhito Yamaguchi, Yusuke Imahashi, Arihito Miyakoshi, Yoshinori Itoh
  • Patent number: 10016982
    Abstract: An inkjet apparatus includes, a carriage, mounting a head that discharges ink, configured to reciprocally move with respect to a sheet that receives the ink, a sensor unit, attached to the carriage, configured to read information from the sheet, and a rectifying skirt, attached to the carriage, having a rectifying surface that faces the sheet. The sensor unit is disposed above the rectifying skirt.
    Type: Grant
    Filed: September 19, 2016
    Date of Patent: July 10, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventors: Daigo Kuronuma, Tomoyuki Nagase, Tomohito Abe, Hiroshi Arimizu, Yusuke Imahashi, Nobuhito Yamaguchi, Yoshihiro Koyama
  • Patent number: 9902154
    Abstract: A platen disposed so as to face a printing head includes a third support portion. A second suction hole is formed in an area through which a recording medium passes at least beyond the third support portion in the width direction of the recording medium or downstream of the third support portion in the conveyance direction. A supply port is formed between the third support portion and the second suction hole. Air is sucked into the second suction hole and supplied toward the recording medium through the supply port.
    Type: Grant
    Filed: March 8, 2017
    Date of Patent: February 27, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventors: Arihito Miyakoshi, Masahiko Kubota, Yusuke Imahashi, Nobuhito Yamaguchi, Hiroshi Arimizu, Yoshinori Itoh
  • Publication number: 20170274676
    Abstract: A platen disposed at a position at which the platen faces a printing head includes a contact portion that comes into contact with a recording medium, a non-contact portion that does not come into contact with the recording medium, and an ink receiving portion that receives ink ejected to beyond the recording medium. A recessed portion is formed between the ink receiving portion and the contact portion in the width direction of the recording medium so as to be lower than the contact portion in the vertical direction. A supply portion that supplies air to the recessed portion is formed upstream of the recessed portion in the conveyance direction of the recording medium.
    Type: Application
    Filed: March 17, 2017
    Publication date: September 28, 2017
    Inventors: Arihito Miyakoshi, Masahiko Kubota, Yusuke Imahashi, Nobuhito Yamaguchi, Hiroshi Arimizu, Yoshinori Itoh
  • Publication number: 20170259571
    Abstract: A platen disposed so as to face a printing head includes a third support portion. A second suction hole is formed in an area through which a recording medium passes at least beyond the third support portion in the width direction of the recording medium or downstream of the third support portion in the conveyance direction. A supply port is formed between the third support portion and the second suction hole. Air is sucked into the second suction hole and supplied toward the recording medium through the supply port.
    Type: Application
    Filed: March 8, 2017
    Publication date: September 14, 2017
    Inventors: Arihito Miyakoshi, Masahiko Kubota, Yusuke Imahashi, Nobuhito Yamaguchi, Hiroshi Arimizu, Yoshinori Itoh
  • Publication number: 20170217192
    Abstract: A blowout port for gas is efficiently configured without impairing mist collection performance. Two blowout ports for gas are adjacent to each other by interposing a partition. An end of the partition is provided at a position near a deep side of the two blowout ports relative to ends of the two blowout ports so as to form a step.
    Type: Application
    Filed: January 25, 2017
    Publication date: August 3, 2017
    Inventors: Yusuke Imahashi, Masahiko Kubota, Hiroshi Arimizu, Nobuhito Yamaguchi, Arihito Miyakoshi, Yoshinori Itoh
  • Patent number: 9701122
    Abstract: A liquid ejecting apparatus includes a moving unit configured to make a relative movement between at least one liquid ejecting unit, having an ejection port for ejecting liquid, and a print medium. The liquid ejecting apparatus includes at least one mist removing unit provided downstream of the at least one liquid ejecting unit in a movement direction in which the print medium is moved in the case of relative movement. The mist removing unit includes at least one suction hole configured to suck air existing in a region defined by the liquid ejecting unit and the print medium together with mist, and at least one blowing hole that is formed downstream of the suction hole in the movement direction, with the blowing hole configured to blow air toward the print medium so as to generate a vortex of gas downstream of the suction hole.
    Type: Grant
    Filed: March 18, 2016
    Date of Patent: July 11, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Hiroshi Arimizu, Masahiko Kubota, Nobuhito Yamaguchi, Arihito Miyakoshi, Koichi Ishida, Yoshinori Itoh
  • Publication number: 20170157959
    Abstract: An object of the present invention is to provide an ink jet printing apparatus that can alleviate an adverse influence by ink mist or airflow turbulence with an inexpensive and small-sized configuration without using power. A printing unit includes a first opening that is parallel to a main scanning direction and is formed at a first surface facing a space defined between an ejection port surface having ejection ports formed thereat and a print medium and a second opening formed at a second surface that is parallel to the main scanning direction and different from the first surface. The first opening and the second opening communicate with each other via a first communication path. The first opening and the second opening are formed in different pressure regions, respectively, in which pressures different from each other are produced when the printing unit is moved in the main scanning direction.
    Type: Application
    Filed: November 22, 2016
    Publication date: June 8, 2017
    Inventors: Hiroshi Arimizu, Masahiko Kubota, Nobuhito Yamaguchi, Yusuke Imahashi, Arihito Miyakoshi, Yoshinori Itoh
  • Patent number: 9656474
    Abstract: Gas is blown at a predetermined speed from a predetermined area on an orifice substrate with reference to the position of an ejection port array.
    Type: Grant
    Filed: March 1, 2016
    Date of Patent: May 23, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hiroshi Arimizu, Ken Tsuchii, Nobuhito Yamaguchi, Yumi Komamiya, Arihito Miyakoshi, Koichi Ishida
  • Patent number: 9616663
    Abstract: Adhesion of particles to a liquid ejecting head due to an electric field generated at an electric power supply wire disposed in the liquid ejecting head can be suppressed. The liquid ejecting head is provided with a conductive member covering at least a part of the electric power supply wire for supplying electric power to an ejection energy generating unit configured to generate ejection energy for ejecting liquid, with an insulator therebetween. The conductive member covers the electric power supply wire in a coverage determined based on a relative movement speed between an ejection port and a print medium, a size of particles floating between an ejection port forming surface and the print medium, an electric charge amount of the particles, and a voltage applied to the electric power supply wire.
    Type: Grant
    Filed: January 15, 2016
    Date of Patent: April 11, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yoshinori Itoh, Nobuhito Yamaguchi, Hiroshi Arimizu, Yusuke Imahashi, Arihito Miyakoshi, Masahiko Kubota, Koichi Ishida
  • Publication number: 20170087862
    Abstract: An inkjet apparatus includes, a carriage, mounting a head that discharges ink, configured to reciprocally move with respect to a sheet that receives the ink, a sensor unit, attached to the carriage, configured to read information from the sheet, and a rectifying skirt, attached to the carriage, having a rectifying surface that faces the sheet. The sensor unit is disposed above the rectifying skirt.
    Type: Application
    Filed: September 19, 2016
    Publication date: March 30, 2017
    Inventors: Daigo Kuronuma, Tomoyuki Nagase, Tomohito Abe, Hiroshi Arimizu, Yusuke Imahashi, Nobuhito Yamaguchi, Yoshihiro Koyama
  • Patent number: 9579896
    Abstract: There is provided a liquid ejecting apparatus and a liquid ejecting head in which mist does not close an ejection port so as to prevent any degradation of the reliability of ejection. In view of this, a ceiling surface is formed between a mist recovering unit and a gas blowing unit in a mist recovering mechanism, thus forming a recess. Inside of the recess are formed a suction port of the mist recovering unit and a gas blowing port of the gas blowing unit.
    Type: Grant
    Filed: March 18, 2016
    Date of Patent: February 28, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yusuke Imahashi, Hiroshi Arimizu, Nobuhito Yamaguchi, Arihito Miyakoshi, Yoshinori Itoh, Masahiko Kubota
  • Publication number: 20160347092
    Abstract: A platen includes: a supporting portion that can support a sheet; a suction unit that sucks the sheet in such a manner as to attach the sheet to the supporting portion; a first ink receiver that receives ink ejected downstream of the leading end of the sheet passing the supporting portion; and a second ink receiver that receives ink ejected upstream of the trailing end of the sheet passing the supporting portion.
    Type: Application
    Filed: May 20, 2016
    Publication date: December 1, 2016
    Inventors: Tetsuji Kurata, Seiji Ogasawara, Masakazu Tsukuda, Takahide Onuma, Yasunori Saito, Arihito Miyakoshi, Masahiko Kubota, Yusuke Imahashi, Nobuhito Yamaguchi, Hiroshi Arimizu, Yoshinori Itoh
  • Patent number: 9498962
    Abstract: A printing device includes: a head that ejects an ink on a medium to perform printing; and a mist collection mechanism having: a suction port facing the medium and sucking air near the head; an exhaust port discharging the sucked air; and an airflow path between the suction port and the exhaust port, wherein the airflow path includes a first spatial region located on a side of the suction port, and a second spatial region located on a side of the exhaust port and adjacent to the first spatial region through a communicating port having an opening area smaller than that of the suction port.
    Type: Grant
    Filed: July 24, 2015
    Date of Patent: November 22, 2016
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Koichi Ishida, Masahiko Kubota, Nobuhito Yamaguchi, Hiroshi Arimizu, Yusuke Imahashi, Arihito Miyakoshi, Yoshinori Itoh