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: 20190240996
    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: Application
    Filed: February 7, 2019
    Publication date: August 8, 2019
    Inventors: Takaaki Ishida, Seiji Ogasawara, Masakazu Tsukuda, Shuichi Tokuda, Masaaki Matsuura, Kazuki Matsuo, Tomofumi Nishida, Yuna Hattori
  • Publication number: 20190241383
    Abstract: An object of the present invention is to prevent the ends of print media fed continuously from colliding with each other. The present invention is a printing apparatus including: a printing unit configured to perform print operation; a detecting unit configured to detect 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, wherein, in a case where 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: Application
    Filed: January 28, 2019
    Publication date: August 8, 2019
    Inventors: Shuichi Tokuda, Seiji Ogasawara, Takaaki Ishida, Masakazu Tsukuda, Masaaki Matsuura, Kazuki Matsuo, Tomofumi Nishida, Yuna Hattori
  • Publication number: 20190243300
    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: Application
    Filed: February 6, 2019
    Publication date: August 8, 2019
    Inventors: Kazuki Matsuo, Seiji Ogasawara, Takaaki Ishida, Shuichi Tokuda, Masakazu Tsukuda, Masaaki Matsuura
  • Publication number: 20190193429
    Abstract: Provided are a sheet feeding device and a printing apparatus that are capable of estimating the number of remaining sheets without errors. The sheet feeding device includes: 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: Application
    Filed: December 17, 2018
    Publication date: June 27, 2019
    Inventors: Masaaki Matsuura, Seiji Ogasawara, Takaaki Ishida, Masakazu Tsukuda, Shuichi Tokuda, Kazuki Matsuo
  • Publication number: 20190193427
    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 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: December 18, 2018
    Publication date: June 27, 2019
    Inventors: Masakazu Tsukuda, Seiji Ogasawara, Takaaki Ishida, Shuichi Tokuda, Masaaki Matsuura, Kazuki Matsuo
  • Publication number: 20190193432
    Abstract: A print media feeding apparatus includes: a stacking part configured to stack the 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: Application
    Filed: December 17, 2018
    Publication date: June 27, 2019
    Inventors: Masakazu Tsukuda, Seiji Ogasawara, Takaaki Ishida, Shuichi Tokuda, Masaaki Matsuura, Kazuki Matsuo, Motoyuki Taguchi
  • Publication number: 20190184719
    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: December 14, 2018
    Publication date: June 20, 2019
    Inventors: Masaaki Matsuura, Seiji Ogasawara, Takaaki Ishida, Masakazu Tsukuda, Shuichi Tokuda, Kazuki Matsuo
  • Publication number: 20190184718
    Abstract: A printing apparatus capable of easily performing jam processing is provided. For this purpose, once support of a platen supporting member is released, then the platen will automatically turn to a predetermined angle.
    Type: Application
    Filed: December 14, 2018
    Publication date: June 20, 2019
    Inventors: Kazuki Matsuo, Seiji Ogasawara, Takaaki Ishida, Shuichi Tokuda, Masakazu Tsukuda, Masaaki Matsuura
  • Patent number: 10124610
    Abstract: A printing apparatus includes a conveyance roller conveying a print medium, a printhead printing an image on the print medium, a carriage supporting the printhead and movable in a direction parallel to an axial direction of the conveyance roller, and a detecting unit detecting a rotation amount of the conveyance roller. The detecting unit is a rotary encoder including a code wheel provided coaxially with the conveyance roller. The carriage can move to a position at which the carriage overlaps the code wheel in a direction perpendicular to the axial direction of the conveyance roller.
    Type: Grant
    Filed: February 18, 2016
    Date of Patent: November 13, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventors: Haruo Uchida, Shuichi Tokuda, Atsushi Ikeda
  • Patent number: 9498984
    Abstract: A recording apparatus has a controller that controls a conveying roller and a discharge roller for conveying a recording medium. The controller controls the rotation phases of the conveying roller and the discharge roller when the recording medium leaves the conveying roller before the recording medium enters the conveying roller.
    Type: Grant
    Filed: December 12, 2014
    Date of Patent: November 22, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hiroyuki Saito, Takaaki Ishida, Koichiro Kawaguchi, Toshirou Yoshiike, Jun Yasutani, Shuichi Tokuda
  • Publication number: 20160257144
    Abstract: A printing apparatus including a conveyance roller conveying a print medium, a printhead printing an image on the print medium, a carriage supporting the printhead and movable in a direction parallel to an axial direction of the conveyance roller, and a detecting unit detecting a rotation amount of the conveyance roller. The detecting unit is a rotary encoder including a code wheel provided coaxially with the conveyance roller. The carriage can move to a position at which the carriage overlaps the code wheel in a direction perpendicular to the axial direction of the conveyance roller.
    Type: Application
    Filed: February 18, 2016
    Publication date: September 8, 2016
    Inventors: Haruo Uchida, Shuichi Tokuda, Atsushi Ikeda
  • Patent number: 9375955
    Abstract: A printing apparatus includes a printing unit, a first and second conveying units conveying a printing medium, a driving unit driving the conveying units and a control unit controlling the driving unit. A load mutually acting on the conveying units through the medium in a conveyance state by the conveying units is recursively calculated for each predetermined conveyance unit while setting the initial value to 0. The driving unit is controlled based on the calculation result at the time of the transition to suppress a fluctuation in a conveyance amount at the time of the transition of the conveyance state of the medium from the conveyance state by the conveying units to a conveyance state only by the second conveying unit.
    Type: Grant
    Filed: September 3, 2013
    Date of Patent: June 28, 2016
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Takaaki Ishida, Yuki Emoto, Shuichi Tokuda, Toshirou Yoshiike, Tatsunori Shimonishi, Junichi Hirate, Kiyoshi Masuda, Tomoyuki Saito
  • Patent number: 9327527
    Abstract: A printing apparatus includes a printing unit, first and second conveying units conveying a printing medium, a driving unit driving the first and second conveying units, and a control unit controlling the driving unit. The conveyance state of the printing medium makes transition from a first conveyance state in which the printing medium is conveyed only by the first conveying unit to a second conveyance state in which the printing medium is conveyed by both the first and second conveying units. The control unit controls the driving unit based on a fluctuation in a load that mutually acts between the first and second conveying units through the printing medium to suppress a fluctuation in a conveyance amount at the time of the transition of the conveyance state from the first conveyance state to the second conveyance state.
    Type: Grant
    Filed: September 3, 2013
    Date of Patent: May 3, 2016
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Yuki Emoto, Takaaki Ishida, Shuichi Tokuda, Toshirou Yoshiike, Tatsunori Shimonishi, Junichi Hirate, Kiyoshi Masuda, Tomoyuki Saito
  • Publication number: 20150097890
    Abstract: A recording apparatus has a controller that controls a conveying roller and a discharge roller for conveying a recording medium. The controller controls the rotation phases of the conveying roller and the discharge roller when the recording medium leaves the conveying roller before the recording medium enters the conveying roller.
    Type: Application
    Filed: December 12, 2014
    Publication date: April 9, 2015
    Inventors: Hiroyuki Saito, Takaaki Ishida, Koichiro Kawaguchi, Toshirou Yoshiike, Jun Yasutani, Shuichi Tokuda
  • Patent number: 8979235
    Abstract: The conveyance apparatus includes a first conveyance unit configured to convey a sheet in a conveyance direction, and a second conveyance unit disposed on a downstream side of the first conveyance unit in the conveyance direction and configured to convey the sheet in the conveyance direction. The conveyance apparatus corrects a rotational amount of each conveyance unit using a correction value dedicated to each rotational phase of each conveyance unit for each conveyance state, in a first conveyance state in which the first conveyance unit is operative to convey the sheet, a second conveyance state in which the first and second conveyance units are cooperative to convey the sheet, and a third conveyance state in which the second conveyance unit is operative to convey the sheet.
    Type: Grant
    Filed: September 9, 2013
    Date of Patent: March 17, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takaaki Ishida, Yuki Emoto, Shuichi Tokuda, Junichi Hirate, Kiyoshi Masuda, Tomoyuki Saito
  • Patent number: 8936338
    Abstract: A recording apparatus has a controller that controls a conveying roller and a discharge roller for conveying a recording medium. The controller controls the rotation phases of the conveying roller and the discharge roller when the recording medium leaves the conveying roller before the recording medium enters the conveying roller.
    Type: Grant
    Filed: July 6, 2012
    Date of Patent: January 20, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hiroyuki Saito, Takaaki Ishida, Koichiro Kawaguchi, Toshirou Yoshiike, Jun Yasutani, Shuichi Tokuda
  • Patent number: 8678370
    Abstract: A recording apparatus to record an image on a recording medium using a recording head includes a first conveying roller, a second conveying roller, and a controller. The first conveying roller is positioned upstream of the recording head in a conveying direction and the second conveying roller is positioned downstream of the recording head in the conveying direction. In response to a first conveying mode being selected, the controller performs a rotational phase control in which the controller controls rotational phases of the first conveying roller and the second conveying roller such that the recording medium is conveyed by predetermined sections of circumferences of the first conveying roller and the second conveying roller when a trailing end of the recording medium passes the first conveying roller. In response to the second conveying mode being selected, the controller does not perform the rotational phase control.
    Type: Grant
    Filed: September 13, 2012
    Date of Patent: March 25, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Minoru Teshigawara, Jun Yasutani, Takeshi Yazawa, Hiroyuki Saito, Takaaki Ishida, Koichiro Kawaguchi, Toshiro Yoshiike, Shuichi Tokuda
  • Publication number: 20140078207
    Abstract: A printing apparatus includes a printing unit, a first and second conveying units conveying a printing medium, a driving unit driving the conveying units and a control unit controlling the driving unit. A load mutually acting on the conveying units through the medium in a conveyance state by the conveying units is recursively calculated for each predetermined conveyance unit while setting the initial value to 0. The driving unit is controlled based on the calculation result at the time of the transition to suppress a fluctuation in a conveyance amount at the time of the transition of the conveyance state of the medium from the conveyance state by the conveying units to a conveyance state only by the second conveying unit.
    Type: Application
    Filed: September 3, 2013
    Publication date: March 20, 2014
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Takaaki Ishida, Yuki Emoto, Shuichi Tokuda, Toshirou Yoshiike, Tatsunori Shimonishi, Junichi Hirate, Kiyoshi Masuda, Tomoyuki Saito
  • Publication number: 20140078210
    Abstract: The conveyance apparatus includes a first conveyance unit configured to convey a sheet in a conveyance direction, and a second conveyance unit disposed on a downstream side of the first conveyance unit in the conveyance direction and configured to convey the sheet in the conveyance direction. The conveyance apparatus corrects a rotational amount of each conveyance unit using a correction value dedicated to each rotational phase of each conveyance unit for each conveyance state, in a first conveyance state in which the first conveyance unit is operative to convey the sheet, a second conveyance state in which the first and second conveyance units are cooperative to convey the sheet, and a third conveyance state in which the second conveyance unit is operative to convey the sheet.
    Type: Application
    Filed: September 9, 2013
    Publication date: March 20, 2014
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Takaaki Ishida, Yuki Emoto, Shuichi Tokuda, Junichi Hirate, Kiyoshi Masuda, Tomoyuki Saito
  • Publication number: 20140078206
    Abstract: A printing apparatus includes a printing unit, first and second conveying units conveying a printing medium, a driving unit driving the first and second conveying units, and a control unit controlling the driving unit. The conveyance state of the printing medium makes transition from a first conveyance state in which the printing medium is conveyed only by the first conveying unit to a second conveyance state in which the printing medium is conveyed by both the first and second conveying units. The control unit controls the driving unit based on a fluctuation in a load that mutually acts between the first and second conveying units through the printing medium to suppress a fluctuation in a conveyance amount at the time of the transition of the conveyance state from the first conveyance state to the second conveyance state.
    Type: Application
    Filed: September 3, 2013
    Publication date: March 20, 2014
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Yuki Emoto, Takaaki Ishida, Shuichi Tokuda, Toshirou Yoshiike, Tatsunori Shimonishi, Junichi Hirate, Kiyoshi Masuda, Tomoyuki Saito