Patents by Inventor Ryosuke Hirokawa

Ryosuke Hirokawa 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: 10507666
    Abstract: An ink jet recording apparatus includes an image forming unit that forms a first image containing a first liquid and a coloring material on an ink receiving medium; and a liquid absorbing member that includes a porous body which is configured to be brought into contact with the first image so as to absorb at least a portion of the first liquid from the first image, in which the porous body is a porous sheet in which a first layer which is configured to be brought into contact with the first image, a second layer including a second fiber and a third layer including a third fiber are laminated in this order.
    Type: Grant
    Filed: June 28, 2018
    Date of Patent: December 17, 2019
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Toru Yamane, Akihiro Mouri, Noboru Toyama, Ryosuke Hirokawa, Kyosuke Deguchi, Toru Ohnishi
  • Patent number: 10471750
    Abstract: A liquid absorbing apparatus for absorbing a liquid component from a formed ink image includes an endless liquid absorbing sheet, a mechanism configured to move the liquid absorbing sheet cyclically, an absorption mechanism configured to absorb the liquid component from the ink image by making the liquid absorbing sheet contact the ink image, a removing mechanism configured to squeeze and remove a liquid with a nipping pressure by nipping the liquid absorbing sheet, and at least one nipping portion, different from the absorption mechanism and the removing mechanism, configured to nip the liquid absorbing sheet. In the apparatus, the nipping pressure of the removing mechanism is set higher than a nipping pressure of the nipping unit.
    Type: Grant
    Filed: June 27, 2018
    Date of Patent: November 12, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Ryosuke Hirokawa, Makoto Terui, Kyosuke Deguchi, Yoshiyuki Honda
  • Publication number: 20190337317
    Abstract: An inkjet recording method of the present invention comprises forming an ink image by ejecting ink on an ejection receiving medium by an inkjet head including a recording element substrate having an energy generation element, a pressure chamber, and an ejection port, wherein the ink is circulated between the inside of the pressure chamber and the outside of the pressure chamber; and removing at least a portion of a liquid component from the ink image by bringing a liquid absorbing member into contact with the ink image, wherein the ink contains 5 to 30 mass % of a water-soluble organic solvent having a bp of 110° C. or more, and 50 mass % or more of the water-soluble organic solvent contained in the ink image and having a bp of 110° C. or more is removed from the ink image in the removal of at least a portion of a liquid component from the ink image.
    Type: Application
    Filed: July 12, 2019
    Publication date: November 7, 2019
    Inventors: Mitsutoshi Noguchi, Ryosuke Hirokawa, Toru Ohnishi, Shingo Okushima, Yoichi Takada
  • Patent number: 10464311
    Abstract: An ink jet recording method of the present invention includes: forming an ink image by ejecting an ink onto a transfer body with an ink jet head in which a recording element substrate provided with an element generating energy to be used for ejecting the ink, a pressure chamber including the element inside, and an ejection orifice ejecting the ink is provided, and the ink in the pressure chamber is circulated between the pressure chamber and the outside of the pressure chamber; and transferring the ink image onto a recording medium by bringing the recording medium into contact with the transfer body on which the ink image is formed, wherein a viscosity of the ink is 2 mPa·s or more to 20 mPa·s or less.
    Type: Grant
    Filed: June 29, 2018
    Date of Patent: November 5, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Mitsutoshi Noguchi, Ryosuke Hirokawa, Toru Ohnishi, Shingo Okushima, Yoichi Takada
  • Patent number: 10406829
    Abstract: An ink jet recording method includes a step of forming a first image containing a first liquid and a coloring material on an ink receiving medium and a liquid absorbing step of bringing a liquid absorbing member including a porous body into contact with the first image to absorb at least some of the first liquid from the first image to form a second image.
    Type: Grant
    Filed: January 25, 2017
    Date of Patent: September 10, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Toshimori Miyakoshi, Ryosuke Hirokawa, Toru Ohnishi
  • Patent number: 10391801
    Abstract: An inkjet recording method of the present invention comprises forming an ink image by ejecting ink on an ejection receiving medium by an inkjet head including a recording element substrate having an energy generation element, a pressure chamber, and an ejection port, wherein the ink is circulated between the inside of the pressure chamber and the outside of the pressure chamber; and removing at least a portion of a liquid component from the ink image by bringing a liquid absorbing member into contact with the ink image, wherein the ink contains 5 to 30 mass % of a water-soluble organic solvent having a bp of 110° C. or more, and 50 mass % or more of the water-soluble organic solvent contained in the ink image and having a bp of 110° C. or more is removed from the ink image in the removal of at least a portion of a liquid component from the ink image.
    Type: Grant
    Filed: June 29, 2018
    Date of Patent: August 27, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Mitsutoshi Noguchi, Ryosuke Hirokawa, Toru Ohnishi, Shingo Okushima, Yoichi Takada
  • Patent number: 10384474
    Abstract: An inkjet recording apparatus includes an ejection head configured to eject an ink to form an image, a head heater configured to heat the ejection head to a temperature T1 and a control unit configured to control the temperature of the ejection head and the temperature at an image forming position by the ejection head. The control unit controls heating of the ejection head by the head heater and the temperature at the image forming position in such a way that the temperature of the ejection head is higher than the temperature at the image forming position.
    Type: Grant
    Filed: June 29, 2018
    Date of Patent: August 20, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Ryosuke Hirokawa, Yoichi Takada, Mitsutoshi Noguchi, Shingo Okushima, Toru Ohnishi
  • Patent number: 10239330
    Abstract: An ink jet recording apparatus includes an image forming unit configured to form an image containing a liquid and a coloring material on an ink receiving medium; a liquid absorbing member including a porous body that comes into contact with the image, the porous body being configured to absorb at least a part of the liquid from the image; and a plurality of pressure applying units configured to press the image on the ink receiving medium by the porous body. The plurality of pressure applying units include a first pressure applying unit configured to press the image at a first pressure and a second pressure applying unit configured to press the image having been pressed by the first pressure applying unit at a second pressure higher than the first pressure.
    Type: Grant
    Filed: January 24, 2017
    Date of Patent: March 26, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Toru Ohnishi, Kyosuke Deguchi, Ryosuke Hirokawa
  • Publication number: 20190009592
    Abstract: A liquid ejection apparatus includes a liquid ejection head which is provided with a pressure chamber having, in the inside thereof, an energy-generating element, a transfer body onto which a liquid is ejected through the liquid ejection head to form an image, and a pressing unit which presses a recording medium against the transfer body to transfer the image formed on the transfer body onto the recording medium, wherein the liquid ejection apparatus further includes a heating unit for heating the transfer body during a period from the ejection of the liquid through the liquid ejection head and until the pressing of the recording medium by means of the pressing unit, and the liquid in the pressure chamber in the liquid ejection head is circulated between the pressure chamber and the outside of the pressure chamber.
    Type: Application
    Filed: June 27, 2018
    Publication date: January 10, 2019
    Inventors: Shingo Okushima, Ryosuke Hirokawa, Toru Ohnishi, Yoichi Takada, Mitsutoshi Noguchi, Takuto Moriguchi
  • Publication number: 20190009599
    Abstract: An inkjet recording method of the present invention comprises forming an ink image by ejecting ink on an ejection receiving medium by an inkjet head including a recording element substrate having an energy generation element, a pressure chamber, and an ejection port, wherein the ink is circulated between the inside of the pressure chamber and the outside of the pressure chamber; and removing at least a portion of a liquid component from the ink image by bringing a liquid absorbing member into contact with the ink image, wherein the ink contains 5 to 30 mass % of a water-soluble organic solvent having a bp of 110° C. or more, and 50 mass % or more of the water-soluble organic solvent contained in the ink image and having a bp of 110° C. or more is removed from the ink image in the removal of at least a portion of a liquid component from the ink image.
    Type: Application
    Filed: June 29, 2018
    Publication date: January 10, 2019
    Inventors: Mitsutoshi Noguchi, Ryosuke Hirokawa, Toru Ohnishi, Shingo Okushima, Yoichi Takada
  • Publication number: 20190009549
    Abstract: An ink jet printing apparatus including: an image forming unit which forms an ink image containing an aqueous liquid component and a coloring material, including a reaction solution applying unit and an ink applying unit; and a liquid absorbing unit for absorbing at least a portion of a liquid component from the ink image by bringing a porous body into contact with the ink image, the liquid absorbing unit including a liquid absorbing member having the porous body, wherein the ink applying unit includes a liquid ejection head including a plurality of printing element substrates each having an element which generates energy that is utilized for discharging a liquid, a pressure chamber which has the element in the inside, and a plurality of ejection orifices which discharge a liquid, and the ink is circulated between the inside of the pressure chamber and the outside of the pressure chamber.
    Type: Application
    Filed: June 27, 2018
    Publication date: January 10, 2019
    Inventors: Yoichi Takada, Ryosuke Hirokawa, Mitsutoshi Noguchi, Shingo Okushima, Toru Ohnishi
  • Publication number: 20190009519
    Abstract: An ink jet recording method of the present invention includes: forming an ink image by ejecting an ink onto a transfer body with an ink jet head in which a recording element substrate provided with an element generating energy to be used for ejecting the ink, a pressure chamber including the element inside, and an ejection orifice ejecting the ink is provided, and the ink in the pressure chamber is circulated between the pressure chamber and the outside of the pressure chamber; and transferring the ink image onto a recording medium by bringing the recording medium into contact with the transfer body on which the ink image is formed, wherein a viscosity of the ink is 2 mPa·s or more to 20L mPa·s or less.
    Type: Application
    Filed: June 29, 2018
    Publication date: January 10, 2019
    Inventors: Mitsutoshi Noguchi, Ryosuke Hirokawa, Toru Ohnishi, Shingo Okushima, Yoichi Takada
  • Publication number: 20190009577
    Abstract: An inkjet recording apparatus includes an ejection head configured to eject an ink to form an image, a head heater configured to heat the ejection head to a temperature T1 and a control unit configured to control the temperature of the ejection head and the temperature at an image forming position by the ejection head. The control unit controls heating of the ejection head by the head heater and the temperature at the image forming position in such a way that the temperature of the ejection head is higher than the temperature at the image forming position.
    Type: Application
    Filed: June 29, 2018
    Publication date: January 10, 2019
    Inventors: Ryosuke Hirokawa, Yoichi Takada, Mitsutoshi Noguchi, Shingo Okushima, Toru Ohnishi
  • Publication number: 20190009589
    Abstract: There is provided a liquid absorbing apparatus for absorbing a liquid component from a formed ink image, including an endless liquid absorbing sheet, a mechanism configured to move the liquid absorbing sheet cyclically, an absorption mechanism configured to absorb the liquid component from the ink image by making the liquid absorbing sheet contact the ink image, a removing mechanism configured to squeeze and remove a liquid with a nipping pressure by nipping the liquid absorbing sheet, and at least one nipping portion, different from the absorption mechanism and the removing mechanism, configured to nip the liquid absorbing sheet. In the apparatus, the nipping pressure of the removing mechanism is set higher than a nipping pressure of the nipping unit.
    Type: Application
    Filed: June 27, 2018
    Publication date: January 10, 2019
    Inventors: Ryosuke Hirokawa, Makoto Terui, Kyosuke Deguchi, Yoshiyuki Honda
  • Publication number: 20190009515
    Abstract: In a printing apparatus, an image is formed by an inkjet printhead, and a liquid component is absorbed from the image by bringing a cyclically movable liquid absorbing member into contact with the image. Then, the member is nipped by the first roller that contacts the first surface of the member, and the second roller that has a vertical positional relationship with respect to the first roller and contacts the second surface on a side opposite to the first surface. Furthermore, a region where the member is pressurized is formed by sealing the member by bending and winding the member around the first roller located on an upper side of the second roller at the nipped position. Then, the absorbed liquid component is pushed out and collected by moving the member in the nipped state.
    Type: Application
    Filed: June 22, 2018
    Publication date: January 10, 2019
    Inventors: Kyosuke Deguchi, Ryosuke Hirokawa, Makoto Terui, Yoshiyuki Honda
  • Publication number: 20190001710
    Abstract: An inkjet recording method includes a step of applying a reaction liquid onto an ejection receiving medium, a step of applying an ink onto the ejection receiving medium to form an ink image, a step of causing a first porous body to contact with the ink image to remove a liquid component contained therein, a first collecting step of absorbing the liquid component in the first porous body by means of a second porous body and a second collecting step of sucking and collecting the liquid component in the second porous body. The pore diameter of the second porous body is controlled in the first collecting step and in the second collecting step.
    Type: Application
    Filed: June 22, 2018
    Publication date: January 3, 2019
    Inventors: Ryosuke Hirokawa, Minoru Nozawa, Toshimori Miyakoshi
  • Publication number: 20180345702
    Abstract: An ink jet recording apparatus including: an image forming unit that forms a first image containing a first liquid and a coloring material on a transfer body; and a liquid absorbing device including a liquid absorbing member having a porous body coming in contact with the first image to at least partially absorb the first liquid from the first image, and a cleaning member coming in contact with the porous body to clean the porous body wherein surface free energy Y1 of the transfer body, surface free energy Y2 of the porous body, surface free energy Y3 of the cleaning member, and a dispersion force component Yd of surface free energy of the first image satisfy the following Equation (1): |Yd,?Y3|<|Yd,?Y1|<|Yd,?Y2|??(1).
    Type: Application
    Filed: August 10, 2018
    Publication date: December 6, 2018
    Inventors: Kyosuke Deguchi, Toru Yamane, Atsushi Sakamoto, Satoshi Masuda, Yoshiyuki Honda, Ryosuke Hirokawa, Akihiro Mouri, Toru Ohnishi, Noboru Toyama
  • Patent number: 10137690
    Abstract: An ink jet recording apparatus includes a liquid collecting device including a compression member configured to compress a first porous body from a second surface opposite to a first surface that comes into contact with a first image, to extrude and collect a liquid component containing a first liquid from the first surface of the first porous body, and the liquid collecting device includes a second porous body configured to absorb the liquid component extruded from the first surface of the first porous body.
    Type: Grant
    Filed: January 20, 2017
    Date of Patent: November 27, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventors: Ryosuke Hirokawa, Toru Yamane, Akihiro Mouri, Hiroaki Motooka
  • Publication number: 20180326756
    Abstract: In a process of an ink receiving medium entering a nip part with a liquid absorbing member, force in a direction to sweep up an image to be processed as an absorption removal treatment target is reduced by changing a nip pressure of the nip part in a conveying direction of the ink receiving medium. Furthermore, when peeling off the liquid absorbing member from the ink receiving medium from the nip part, force for pulling a liquid component toward a porous body is effectively applied. As a result, it is possible to achieve high absorption and removal of the liquid component from the image to be processed while suppressing disturbance of the image to be processed.
    Type: Application
    Filed: July 3, 2018
    Publication date: November 15, 2018
    Inventors: Ryosuke Hirokawa, Toru Yamane, Akihiro Mouri
  • Publication number: 20180326719
    Abstract: A liquid holding amount of a porous body of a liquid absorbing member for removing at least a portion of an aqueous liquid component from an image obtained by ink jet printing is controlled so as to reduce damage to the porous body while maintaining performance of removing attached matters from the porous body by using a cleaning member which abuts on the porous body and has an adhesive force.
    Type: Application
    Filed: July 23, 2018
    Publication date: November 15, 2018
    Inventors: Satoshi Masuda, Toru Yamane, Kyosuke Deguchi, Ryosuke Hirokawa, Toru Ohnishi, Akihiro Mouri, Noboru Toyama, Atsushi Sakamoto, Yoshiyuki Honda, Taku Higashiyama, Susumu Hirosawa