Patents by Inventor Shuichi Tokuda

Shuichi Tokuda 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: 20240116301
    Abstract: A printing apparatus includes a first conveyance unit provided in a conveyance path and configured to convey a print medium, a second conveyance unit provided upstream of the first conveyance unit in the conveyance path and configured to convey a print medium, a drive source configured to drive the first conveyance unit and the second conveyance unit, and a control unit configured to control the drive source so as to execute a conveying operation in which a second print medium succeeding a first print medium is conveyed by the second conveyance unit while the first print medium is conveyed by the first conveyance unit. The control unit is configured to switch drive control of the drive source in accordance with a position of the second print medium when starting the conveying operation.
    Type: Application
    Filed: October 5, 2023
    Publication date: April 11, 2024
    Inventors: TAKASHI SASAKI, SHUICHI TOKUDA, YUKI EMOTO, KOKI KUDO, HIDEYASU ISHIHARA
  • Publication number: 20240116727
    Abstract: A printing apparatus includes: a first path conveying a printing medium from a manual-feed stacking unit to a printing unit; a second path converging with the first path at a converging section and conveying a printing medium from a cassette; a first roller pair provided downstream the converging section on the first path to nip and convey a printing medium; a first detection unit detecting a printing medium stacked on the manual-feed stacking unit; a second roller pair provided downstream the first roller pair on the first path to nip and convey a printing medium; a second detection unit arranged between the first and second roller pairs to detect a printing medium; and a control unit performing control to start feeding of the printing medium to the printing unit by the first roller pair if the first detection unit detects the printing medium but the second detection unit does not.
    Type: Application
    Filed: October 5, 2023
    Publication date: April 11, 2024
    Inventors: KOKI KUDO, TAKASHI SASAKI, SHUICHI TOKUDA, YUKI EMOTO, HIDEYASU ISHIHARA
  • Publication number: 20240101379
    Abstract: An apparatus comprising a conveyance roller configured to convey a print medium, a print unit configured to execute printing on the print medium, a platen arranged to face the print unit and configured to support the print medium, a sensor configured to emit light to the platen and detect light from the platen, and a control unit configured to execute first control of acquiring, as a first value, a detected value before the print medium reaches a light irradiation region of the sensor, and acquiring, as a second value, a detected value after the print medium is conveyed to include the light irradiation region, wherein the control unit further execute second control of correcting a conveyance amount of the print medium by the conveyance roller based on the first value and the second value.
    Type: Application
    Filed: September 21, 2023
    Publication date: March 28, 2024
    Inventors: YUKI EMOTO, TAKASHI SASAKI, SHUICHI TOKUDA, KOKI KUDO, HIDEYASU ISHIHARA
  • Publication number: 20240101373
    Abstract: Provided is a conveying apparatus, including: a conveying roller that conveys a recording medium; a first helical gear that rotates integrally with the conveying roller; a gear unit that engages with the first helical gear and generates a thrust force to the conveying roller. The gear unit includes a second helical gear and a third helical gear, and a thrust force that the conveying roller receives from the second helical gear acts in an opposite direction of a thrust force that the conveying roller receives from the third helical gear.
    Type: Application
    Filed: September 14, 2023
    Publication date: March 28, 2024
    Inventors: SHUICHI TOKUDA, TAKASHI SASAKI, YUKI EMOTO, KOKI KUDO, HIDEYASU ISHIHARA
  • Patent number: 11926146
    Abstract: A recording apparatus includes a recording unit, a conveyance unit, an application amount information acquisition unit, a determination unit, a direction information acquisition unit, and a setting unit. The recording unit performs recording by applying ink to paper. The application amount information acquisition unit acquires information related to an amount of ink that the recording unit applies to a predetermined region of the paper. The determination unit determines execution of prevention or reduction processing for preventing or reducing curling occurring after recording is performed. The determination is made according to the acquired amount of ink. The direction information acquisition unit acquires information indicating a paper grain direction of the paper relative to a conveyance direction in which the conveyance unit conveys the paper.
    Type: Grant
    Filed: March 10, 2022
    Date of Patent: March 12, 2024
    Assignee: Canon Kabushiki Kaisha
    Inventors: Asako Tomida, Norihiro Kawatoko, Masashi Hayashi, Kentaro Muro, Toshiaki Somano, Shuichi Tokuda
  • Publication number: 20220314645
    Abstract: A recording apparatus includes a recording unit, a conveyance unit, an application amount information acquisition unit, a determination unit, a direction information acquisition unit, and a setting unit. The recording unit performs recording by applying ink to paper. The application amount information acquisition unit acquires information related to an amount of ink that the recording unit applies to a predetermined region of the paper. The determination unit determines execution of prevention or reduction processing for preventing or reducing curling occurring after recording is performed. The determination is made according to the acquired amount of ink. The direction information acquisition unit acquires information indicating a paper grain direction of the paper relative to a conveyance direction in which the conveyance unit conveys the paper.
    Type: Application
    Filed: March 10, 2022
    Publication date: October 6, 2022
    Inventors: Asako Tomida, Norihiro Kawatoko, Masashi Hayashi, Kentaro Muro, Toshiaki Somano, Shuichi Tokuda
  • Publication number: 20220305793
    Abstract: A printing apparatus includes a printing unit that includes an ejection port surface provided with ejection ports through which liquid is ejected, a wiping unit, a depressurizing unit, and detection unit. The wiping unit has an opening and wipes the ejection port surface by moving in a predetermined direction while the opening abuts against the ejection port surface. The depressurizing unit applies negative pressure to the ejection port surface via the opening. The detection unit detects an ejection state of the ejection ports. After driving the depressurizing unit when the opening abuts against the ejection port surface, the suction operation sucks the liquid from the ejection ports while moving the wiping unit. The suction operation is performed from a first ejection port detected as an ejection-failed ejection port by the detection unit under a suction condition different from suction conditions of the ejection ports other than the first ejection port.
    Type: Application
    Filed: March 24, 2022
    Publication date: September 29, 2022
    Inventors: Takashi Sasaki, Shuichi Tokuda, Takahiro Kiuchi, Koki Kudo, Yuka TANI, Akira Kida
  • Publication number: 20220041388
    Abstract: For a printing apparatus, a first conveyance speed for a first printing medium is determined according to first print data to be printed on the first printing medium and a second conveyance speed for a second printing medium is determined according to second print data to be printed on the second printing medium that follows the first printing medium along a conveying path. In a case where the second conveyance speed is equal to the first conveyance speed, a conveyance operation of the second printing medium is started before the first printing medium is discharged from the conveying path. In a case where the second conveyance speed is different from the first conveyance speed, the conveyance operation of the second printing medium is started after the first printing medium is discharged from the conveying path.
    Type: Application
    Filed: October 22, 2021
    Publication date: February 10, 2022
    Inventors: Masaaki Matsuura, Seiji Ogasawara, Takaaki Ishida, Masakazu Tsukuda, Shuichi Tokuda, Kazuki Matsuo
  • Patent number: 11207905
    Abstract: Provided is a printing apparatus that allows the user to easily perceive that the cover is unlocked. In the printing apparatus that includes: a cover unit configured to expose the conveying path, along which the printing medium is conveyed, to the outside when the cover unit is opened and that shields the conveying path when the cover unit is closed; and a locking configured to lock the cover unit to keep it closed, and that performs printing on the printing medium being conveyed along the conveying path, the cover unit is urged by an urging unit in the opening direction. In addition, when the locking unit unlocks the cover unit the cover unit is opened by a predetermined degree by the urging force of the urging unit.
    Type: Grant
    Filed: February 6, 2019
    Date of Patent: December 28, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kazuki Matsuo, Seiji Ogasawara, Takaaki Ishida, Shuichi Tokuda, Masakazu Tsukuda, Masaaki Matsuura
  • Patent number: 11198576
    Abstract: A technique that enables application of additional conveyance force to a print medium and conveyance of various sizes of print media without multi-feed is described. A conveyance device includes a feed unit, a first conveyance unit that conveys a print medium, and a second conveyance unit that conveys a print medium fed by the feed unit to the first conveyance unit, and is capable of correcting the skew of a print medium by causing the second conveyance unit to convey the print medium with its leading edge in abutment with the first conveyance unit. This conveyance device is configured to cause the feed unit to apply conveyance force to a print medium conveyed by the second conveyance unit, depending on the size of the print medium in the conveyance direction.
    Type: Grant
    Filed: February 8, 2019
    Date of Patent: December 14, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kazuki Matsuo, Seiji Ogasawara, Takaaki Ishida, Shuichi Tokuda, Masakazu Tsukuda, Masaaki Matsuura
  • Patent number: 11167945
    Abstract: For a printing apparatus, a first conveyance speed for a first printing medium is determined according to first print data to be printed on the first printing medium and a second conveyance speed for a second printing medium is determined according to second print data to be printed on the second printing medium that follows the first printing medium along a conveying path. In a case where the second conveyance speed is equal to the first conveyance speed, a conveyance operation of the second printing medium is started before the first printing medium is discharged from the conveying path. In a case where the second conveyance speed is different from the first conveyance speed, the conveyance operation of the second printing medium is started after the first printing medium is discharged from the conveying path.
    Type: Grant
    Filed: December 14, 2018
    Date of Patent: November 9, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masaaki Matsuura, Seiji Ogasawara, Takaaki Ishida, Masakazu Tsukuda, Shuichi Tokuda, Kazuki Matsuo
  • Patent number: 11001083
    Abstract: A printing apparatus includes a first feeding part configured to feed print media from a first support part supporting the print media, a second feeding part configured to feed print media from a second support part supporting the print media, and a print head configured to print on the print media fed by the first feeding part or the second feeding part. Further, the printing apparatus includes a first conveying path where the print media fed by the first feeding part are conveyed to the print head, and a second conveying path where the print media fed by the second feeding part are conveyed to the print head. At least a part of the second feeding part protrudes in a predetermined spatial area within the first conveying path during a feed operation of feeding print media from the second support part.
    Type: Grant
    Filed: September 8, 2020
    Date of Patent: May 11, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masakazu Tsukuda, Seiji Ogasawara, Takaaki Ishida, Shuichi Tokuda, Masaaki Matsuura, Kazuki Matsuo
  • Patent number: 10889134
    Abstract: To shorten the time to be taken to start executing a process to handle conveyance trouble of a print medium after the occurrence of the conveyance trouble, a printing apparatus of the present invention, upon sensing of conveyance trouble by a sensing unit during a printing operation, stops the conveyance of the print medium in the conveyance trouble and any print medium located upstream of it, and moves a printing head from a first position at which the printing head performs printing on a print medium to a second position to which the printing head is retreated from the first position, in parallel with a discharge operation for conveying, to a discharge unit, any print medium located downstream of the print medium in the conveyance trouble.
    Type: Grant
    Filed: February 7, 2019
    Date of Patent: January 12, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takaaki Ishida, Seiji Ogasawara, Masakazu Tsukuda, Shuichi Tokuda, Masaaki Matsuura, Kazuki Matsuo, Tomofumi Nishida, Yuna Hattori
  • Publication number: 20200398590
    Abstract: A printing apparatus includes a first feeding part configured to feed print media from a first support part supporting the print media, a second feeding part configured to feed print media from a second support part supporting the print media, and a print head configured to print on the print media fed by the first feeding part or the second feeding part. Further, the printing apparatus includes a first conveying path where the print media fed by the first feeding part are conveyed to the print head, and a second conveying path where the print media fed by the second feeding part are conveyed to the print head. At least a part of the second feeding part protrudes in a predetermined spatial area within the first conveying path during a feed operation of feeding print media from the second support part.
    Type: Application
    Filed: September 8, 2020
    Publication date: December 24, 2020
    Inventors: Masakazu Tsukuda, Seiji Ogasawara, Takaaki Ishida, Shuichi Tokuda, Masaaki Matsuura, Kazuki Matsuo
  • Patent number: 10870550
    Abstract: In a printing apparatus, the ends of print media fed continuously can be prevented from colliding with each other. The printing apparatus includes a printing unit configured to perform a print operation, a detecting unit configured to detect a conveyance abnormality, a conveying unit configured to convey a preceding print medium and a succeeding print medium, a conveying path having a first area including a curved portion at which a conveying direction of the print medium is curved and a second area upstream of the first area, and an opening unit capable of opening the first area of the conveying path. In a case in which a leading edge of the succeeding print medium is located in the second area at the time of the detecting unit detecting conveyance abnormality of the preceding print medium, the conveying unit conveys the succeeding print medium so that the leading edge of the succeeding print medium reaches the first area.
    Type: Grant
    Filed: January 28, 2019
    Date of Patent: December 22, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shuichi Tokuda, Seiji Ogasawara, Takaaki Ishida, Masakazu Tsukuda, Masaaki Matsuura, Kazuki Matsuo, Tomofumi Nishida, Yuna Hattori
  • Patent number: 10800189
    Abstract: A printing apparatus capable of performing jam processing includes a movable platen. For this purpose, once support of a platen supporting member is released, the platen will automatically turn to a predetermined angle.
    Type: Grant
    Filed: December 14, 2018
    Date of Patent: October 13, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kazuki Matsuo, Seiji Ogasawara, Takaaki Ishida, Shuichi Tokuda, Masakazu Tsukuda, Masaaki Matsuura
  • Patent number: 10792938
    Abstract: A printing apparatus includes a first feeding part configured to feed print media from a first support part supporting the print media, a second feeding part configured to feed print media from a second support part supporting the print media, and a print head configured to print on the print media fed by the first feeding part or the second feeding part. Further, the printing apparatus includes a first conveying path where the print media fed by the first feeding part are conveyed to the print head, and a second conveying path where the print media fed by the second feeding part are conveyed to the print head. At least a part of the second feeding part protrudes in a predetermined spatial area within the first conveying path during a feed operation of feeding print media from the second support part.
    Type: Grant
    Filed: December 18, 2018
    Date of Patent: October 6, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masakazu Tsukuda, Seiji Ogasawara, Takaaki Ishida, Shuichi Tokuda, Masaaki Matsuura, Kazuki Matsuo
  • Patent number: 10787010
    Abstract: A print media feeding apparatus includes a stacking part configured to stack print media; a feeding roller which is movable to an abutting position at which the feeding roller contacts the print media stacked on the stacking part and to a separated position separated from the print media stacked on the stacking part and configured to feed a print medium by rotating at the abutting position; a separation member configured to separate the print media; and a return unit configured to perform a return operation of returning the print medium other than a top print medium which the feeding roller abuts. The feeding roller moves to the separated position after feeding the print medium from the stacking part. The return unit performs the return operation upon the feeding roller moving to the separated position. After the return operation, the feeding roller stops at the abutting position.
    Type: Grant
    Filed: December 17, 2018
    Date of Patent: September 29, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masakazu Tsukuda, Seiji Ogasawara, Takaaki Ishida, Shuichi Tokuda, Masaaki Matsuura, Kazuki Matsuo, Motoyuki Taguchi
  • Patent number: 10640310
    Abstract: A sheet feeding device and a printing apparatus capable of estimating a number of remaining sheets without error include a loading member on which sheets are loaded, a lift unit that moves the loading member up and down, a position detection unit that detects a lift-up position to which the loading member moves up, a sheet detection unit that detects that a sheet at an uppermost position of the sheets loaded on the loading member has moved up to a feeding position by an upward movement of the loading member, a feeding roller that feeds a sheet at the feeding position, and an estimation unit that estimates the number of remaining sheets loaded on the loading member based on a combination of detection results of the sheet detection unit and the position detection unit.
    Type: Grant
    Filed: December 17, 2018
    Date of Patent: May 5, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masaaki Matsuura, Seiji Ogasawara, Takaaki Ishida, Masakazu Tsukuda, Shuichi Tokuda, Kazuki Matsuo
  • Publication number: 20190248165
    Abstract: Provided is a technique that enables application of additional conveyance force to a print medium and conveyance of various sizes of print media without multi-feed. A conveyance device includes a feed unit, a first conveyance unit that conveys a print medium, and a second conveyance unit that conveys a print medium fed by the feed unit to the first conveyance unit, and is capable of correcting the skew of a print medium by causing the second conveyance unit to convey the print medium with its leading edge in abutment with the first conveyance unit. This conveyance device is configured to cause the feed unit to apply conveyance force to a print medium conveyed by the second conveyance unit, depending on the size of the print medium in the conveyance direction.
    Type: Application
    Filed: February 8, 2019
    Publication date: August 15, 2019
    Inventors: Kazuki Matsuo, Seiji Ogasawara, Takaaki Ishida, Shuichi Tokuda, Masakazu Tsukuda, Masaaki Matsuura