Patents by Inventor Taku Yokozawa

Taku Yokozawa 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: 20230136284
    Abstract: A recording apparatus includes a recording unit, a scanning unit configured to perform relative scanning by moving the recording unit and a recording medium relative to each other at least once with respect to a unit region on the recording medium, a recovery unit configured to perform a recovery operation for maintaining or recovering a recording performance of the recording unit for application of a recording material, and a control unit configured to control the recovery unit, wherein the control unit acquires recording mode information about recording of an image to be performed on a recording medium for (n+1)-th page (n being a natural number) and determines, based on the acquired recording mode information, whether to perform an inter-page recovery operation at timing after recording of an image on a recording medium for n-th page ends and before recording of an image on a recording medium for (n+1)-th page starts.
    Type: Application
    Filed: December 30, 2022
    Publication date: May 4, 2023
    Inventors: Toshimitsu Danzuka, Masataka Kato, Hiroto Kango, Rie Takekoshi, Akihiro Tomida, Tomoki Yamamuro, Keita Ishimi, Kazuki Narumi, Taku Yokozawa, Kazuo Suzuki, Kazuhiko Sato
  • Patent number: 11560003
    Abstract: A recording apparatus includes a recording unit, a scanning unit configured to perform relative scanning by moving the recording unit and a recording medium relative to each other at least once with respect to a unit region on the recording medium, a recovery unit configured to perform a recovery operation for maintaining or recovering a recording performance of the recording unit for application of a recording material, and a control unit configured to control the recovery unit, wherein the control unit acquires recording mode information about recording of an image to be performed on a recording medium for (n+1)-th page (n being a natural number) and determines, based on the acquired recording mode information, whether to perform an inter-page recovery operation at timing after recording of an image on a recording medium for n-th page ends and before recording of an image on a recording medium for (n+1)-th page starts.
    Type: Grant
    Filed: July 12, 2021
    Date of Patent: January 24, 2023
    Assignee: Canon Kabushiki Kaisha
    Inventors: Toshimitsu Danzuka, Masataka Kato, Hiroto Kango, Rie Takekoshi, Akihiro Tomida, Tomoki Yamamuro, Keita Ishimi, Kazuki Narumi, Taku Yokozawa, Kazuo Suzuki, Kazuhiko Sato
  • Publication number: 20220134738
    Abstract: An inkjet printing apparatus includes a print head configured to print an image on a printing medium using a printing element configured to eject ink with thermal energy, a scanning unit configured to cause the print head to scan the printing medium, and a control unit configured to control scanning by the scanning unit and image printing by the print head based on an image printing instruction, wherein the control unit performs a control operation including executing a preliminary ejection to eject, from the print head, ink that does not contribute to image printing before an image is printed in one scanning operation, and determining an amount of ink to be ejected in the preliminary ejection based on a difference between a target temperature and a scanning start temperature, which is a temperature of the print head acquired in response to an instruction to start the one scanning operation.
    Type: Application
    Filed: October 27, 2021
    Publication date: May 5, 2022
    Inventors: Taku Yokozawa, Kazuhiko Sato, Noboru Kunimine, Takeshi Murase, Hiroshi Taira, Hiroshi Kawafuji, Sae Mogi, Akiko Aichi
  • Publication number: 20220080747
    Abstract: An object is to provide a full-line inkjet printing apparatus and a printing method that can suppress occurrence of image degradation in the case where a conveyance roller conveys a print medium and multipass printing is performed. The maximum conveyance amount in a return route is set to be smaller than a distance between the conveyance roller and a print head.
    Type: Application
    Filed: November 29, 2021
    Publication date: March 17, 2022
    Inventors: Masataka Kato, Kazuhiko Sato, Kazuo Suzuki, Yoshinori Nakajima, Mitsutoshi Nagamura, Shin Genta, Satoshi Azuma, Shingo Nishioka, Sae Mogi, Taku Yokozawa, Noboru Kunimine, Akiko Aichi, Hiroshi Taira, Hiroto Kango, Hiroshi Kawafuji
  • Publication number: 20220080754
    Abstract: To provide a technology capable of appropriately suppressing deterioration in cutting accuracy of a slitter although the rigidity of a print medium changes, a printing apparatus is equipped with: a first conveyance unit configured to convey a print medium; a printing unit configured to print an image by applying ink to the print medium conveyed by the first conveyance unit; a cutting unit disposed on a downstream side in a conveyance direction in which the print medium is conveyed by the first conveyance unit and configured to cut the print medium, which is conveyed by the first conveyance unit, along the conveyance direction; and a second conveyance unit disposed on the cutting unit, and the printing apparatus includes a correction unit configured to correct a parameter related to conveyance of at least one of the first conveyance unit and the second conveyance unit, based on information about the print medium.
    Type: Application
    Filed: August 23, 2021
    Publication date: March 17, 2022
    Inventors: Hiroshi Kawafuji, Hiroshi Taira, Kazuhiko Sato, Taku Yokozawa, Noboru Kunimine, Akiko Aichi, Satoshi Azuma, Sae Mogi, Kei Yoshizawa, Shingo Nishioka, Junichi Saito, Hajime Nagai, Naoko Baba, Yuji Konno, Serena Yoshikawa, Satoshi Wada
  • Publication number: 20220016917
    Abstract: A recording apparatus includes a recording unit, a scanning unit configured to perform relative scanning by moving the recording unit and a recording medium relative to each other at least once with respect to a unit region on the recording medium, a recovery unit configured to perform a recovery operation for maintaining or recovering a recording performance of the recording unit for application of a recording material, and a control unit configured to control the recovery unit, wherein the control unit acquires recording mode information about recording of an image to be performed on a recording medium for (n+1)-th page (n being a natural number) and determines, based on the acquired recording mode information, whether to perform an inter-page recovery operation at timing after recording of an image on a recording medium for n-th page ends and before recording of an image on a recording medium for (n+1)-th page starts.
    Type: Application
    Filed: July 12, 2021
    Publication date: January 20, 2022
    Inventors: Toshimitsu Danzuka, Masataka Kato, Hiroto Kango, Rie Takekoshi, Akihiro Tomida, Tomoki Yamamuro, Keita Ishimi, Kazuki Narumi, Taku Yokozawa, Kazuo Suzuki, Kazuhiko Sato
  • Publication number: 20210402813
    Abstract: A printing apparatus includes a printing unit configured to print an image on a print medium, an acquiring unit configured to acquire temperature information of the printing unit, and a control unit configured to control the printing unit so as to start relative scanning in a case where a temperature that is indicated by the temperature information has reached a print permission temperature. The print permission temperature in a first print mode whose speed at a time of a constant speed in relative scanning is a first speed is a first temperature. The print permission temperature in a second print mode whose speed at the time of the constant speed is a second speed that is faster than the first speed is a second temperature that is lower than the first temperature.
    Type: Application
    Filed: June 23, 2021
    Publication date: December 30, 2021
    Inventors: Takeshi Murase, Kazuhiko Sato, Taku Yokozawa, Noburu Kunimine, Hiroshi Taira, Hiroshi Kawafuji, Sae Mogi, Akiko Aichi
  • Patent number: 11077670
    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: Grant
    Filed: January 22, 2019
    Date of Patent: August 3, 2021
    Assignee: Canon Kabushiki Kaisha
    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: 10611156
    Abstract: An inkjet recording apparatus according to the present disclosure executes a first wiping operation in a case where the count value counted by the count unit is higher than a first threshold value while the recording operation is being performed and execute a second wiping operation when the recording operation completes in a case where the count value counted by the count unit is higher than a second threshold value. The inkjet recording apparatus also executes the second wiping operation when the first wiping operation has been performed while the recording operation is being performed.
    Type: Grant
    Filed: June 18, 2018
    Date of Patent: April 7, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Hiroshi Taira, Toshimitsu Danzuka, Taku Yokozawa, Noboru Kunimine, Akiko Aichi, Kazuki Narumi, Tomoki Yamamuro, Kazuhiko Sato, Kazuo Suzuki
  • Patent number: 10479090
    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: Grant
    Filed: March 6, 2018
    Date of Patent: November 19, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Toshimitsu Danzuka, Taku Yokozawa, Masataka Kato, Akiko Aichi, Shin Genta, Kazuki Narumi
  • 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
  • Publication number: 20180370239
    Abstract: An inkjet recording apparatus according to the present disclosure executes a first wiping operation in a case where the count value counted by the count unit is higher than a first threshold value while the recording operation is being performed and execute a second wiping operation when the recording operation completes in a case where the count value counted by the count unit is higher than a second threshold value. The inkjet recording apparatus also executes the second wiping operation when the first wiping operation has been performed while the recording operation is being performed.
    Type: Application
    Filed: June 18, 2018
    Publication date: December 27, 2018
    Inventors: Hiroshi Taira, Toshimitsu Danzuka, Taku Yokozawa, Noboru Kunimine, Akiko Aichi, Kazuki Narumi, Tomoki Yamamuro, Kazuhiko Sato, Kazuo Suzuki
  • 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
  • Patent number: 10022961
    Abstract: A recording apparatus is capable of executing multiple types of different temperature control. A recording head of the recording apparatus has multiple temperature sensors disposed at different positions from each other in the recording head. Each of the multiple types of different temperature control is performed based on representative temperatures acquired using different combinations of the temperature sensors.
    Type: Grant
    Filed: April 24, 2017
    Date of Patent: July 17, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventors: Taku Yokozawa, Hiroaki Shirakawa, Mitsutoshi Nagamura, Yuhei Oikawa, Yosuke Ishii, Hiroaki Komatsu, Satoshi Azuma, Hiroshi Taira
  • Patent number: 9895894
    Abstract: After printing is performed by driving only some printing elements, the other printing elements are driven so that kogation is deposited on the surface of the other printing elements.
    Type: Grant
    Filed: May 17, 2016
    Date of Patent: February 20, 2018
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Hiroshi Taira, Taku Yokozawa, Hiroaki Shirakawa, Mitsutoshi Nagamura, Yuhei Oikawa, Satoshi Azuma, Yosuke Ishii, Hiroaki Komatsu
  • Patent number: 9873247
    Abstract: A driving pulse to be applied is changed when an overlapped level of invert timing of driving pulse is large.
    Type: Grant
    Filed: March 8, 2016
    Date of Patent: January 23, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yuhei Oikawa, Taku Yokozawa, Hiroaki Shirakawa, Mitsutoshi Nagamura, Hiroshi Taira, Satoshi Azuma, Yosuke Ishii, Hiroaki Komatsu
  • Patent number: 9855743
    Abstract: Recording elements are driven by changing a driving pulse applied thereto in accordance with information regarding a total number of times the recording elements have been driven.
    Type: Grant
    Filed: September 28, 2016
    Date of Patent: January 2, 2018
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Hiroshi Taira, Kazuhiko Sato, Taku Yokozawa, Hiroaki Shirakawa, Mitsutoshi Nagamura, Yuhei Oikawa, Yosuke Ishii, Satoshi Azuma, Hiroaki Komatsu
  • Patent number: 9738069
    Abstract: A driving pulse to be applied to a plurality of print elements in a print element array is decided based on the deviation of the discharge amount from the print elements.
    Type: Grant
    Filed: May 24, 2016
    Date of Patent: August 22, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Yuhei Oikawa, Taku Yokozawa, Hiroaki Shirakawa, Mitsutoshi Nagamura, Hiroshi Taira, Yosuke Ishii, Satoshi Azuma, Hiroaki Komatsu, Kazuhiko Sato
  • Publication number: 20170225459
    Abstract: A recording apparatus is capable of executing multiple types of different temperature control. A recording head of the recording apparatus has multiple temperature sensors disposed at different positions from each other in the recording head. Each of the multiple types of different temperature control is performed based on representative temperatures acquired using different combinations of the temperature sensors.
    Type: Application
    Filed: April 24, 2017
    Publication date: August 10, 2017
    Inventors: Taku Yokozawa, Hiroaki Shirakawa, Mitsutoshi Nagamura, Yuhei Oikawa, Yosuke Ishii, Hiroaki Komatsu, Satoshi Azuma, Hiroshi Taira
  • Patent number: RE46517
    Abstract: A method and recording apparatus including discharging ink to record an image, storing a parameter relating to a cumulative recording amount of the recording apparatus, setting a detection interval based on the parameter relating to the cumulative recording amount, and detecting a discharge state of the ink discharged from the recording head based on the set interval.
    Type: Grant
    Filed: August 14, 2013
    Date of Patent: August 22, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventors: Taku Yokozawa, Nobumori Shimizu