Patents by Inventor Seiji Ogasawara

Seiji Ogasawara 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: 10183505
    Abstract: A printing apparatus includes a suction unit configured to allow a negative pressure, by which a sheet is sucked to a supporting portion, to act on the sheet; and ink receivers configured to receive ink ejected outside of the sheet. Waste ink ejected to the ink receivers is guided to a waste ink discharge port formed on an outer peripheral wall of a platen through waste ink channels. A sheet sucking mechanism configured to apply the negative pressure is disposed adjacent to the suction unit. A discharging mechanism configured to forcibly discharge waste ink outside of the platen is connected to the waste ink discharge port.
    Type: Grant
    Filed: May 20, 2016
    Date of Patent: January 22, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Seiji Ogasawara, Tetsuji Kurata, Masakazu Tsukuda, Takahide Onuma, Yasunori Saito
  • 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: 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
  • Publication number: 20180236791
    Abstract: There is provided an inkjet printing apparatus capable of stably outputting high quality images in a configuration of feeding a print medium that is kept horizontal, performing printing by the use of a print head, and conveying the print medium vertically upward. To this purpose, a platen that supports the back side of the print medium in a position facing a printing part of the print head is located to support the print medium at an angle greater than 0° and less than 90° with respect to the horizontal direction, thereby reducing a contact pressure from roller pairs on the printed side immediately after printing.
    Type: Application
    Filed: January 26, 2018
    Publication date: August 23, 2018
    Inventors: Tetsuyo Ohashi, Yasuyuki Takanaka, Tetsuya Ishikawa, Seiji Ogasawara, Noriko Sato, Akira Kida, Noboru Shimoyama
  • Publication number: 20180236797
    Abstract: There is provided an inkjet printing apparatus capable of moving a print head in a short time using a simpler configuration. To this purpose, the print head is moved while simultaneously performing rotational movement and linear movement between a printing position and a maintenance position in the printing apparatus.
    Type: Application
    Filed: February 8, 2018
    Publication date: August 23, 2018
    Inventors: Tetsuyo Ohashi, Yasuyuki Takanaka, Tetsuya Ishikawa, Seiji Ogasawara, Noriko Sato, Akira Kida, Noboru Shimoyama
  • Patent number: 10011124
    Abstract: Marginless printing is performed by using a printhead which ejects ink. Information on an inclination of a sheet to be conveyed is obtained, and in performing the marginless printing at a leading end of the sheet, an image region with respect to which ink is discarded to an outside of the sheet is set based on the obtained information. Further, a platen which supports the sheet by sucking in a manner facing the printhead which ejects the ink is provided and control is performed such that in performing printing sequentially from the leading end to a trailing end of the sheet, suction force of the platen is decreased upon approach of a portion to be printed to the trailing end of the sheet.
    Type: Grant
    Filed: May 20, 2016
    Date of Patent: July 3, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventors: Seiji Ogasawara, Tetsuji Kurata
  • Publication number: 20180015741
    Abstract: A platen includes: a plurality of supporting portions capable of supporting a sheet; negative pressure chambers, to which a negative pressure is supplied, so as to suck a sheet facing the supporting portions to the supporting portions; and ink receiver and that receive ink ejected from a printhead to the outside of the sheet supported by the supporting portions. The plurality of supporting portions are arranged in a sheet width direction (i.e., an X direction) transverse a sheet conveyance direction. The plurality of negative pressure chambers are disposed in a manner corresponding to the plurality of supporting portions, respectively.
    Type: Application
    Filed: September 27, 2017
    Publication date: January 18, 2018
    Inventors: Takahide Onuma, Tetsuji Kurata, Seiji Ogasawara, Masakazu Tsukuda, Yasunori Saito
  • Patent number: 9802426
    Abstract: A platen includes: a plurality of supporting portions capable of supporting a sheet; negative pressure chambers, to which a negative pressure is supplied, so as to suck a sheet facing the supporting portions to the supporting portions; and ink receiver and that receive ink ejected from a printhead to the outside of the sheet supported by the supporting portions. The plurality of supporting portions are arranged in a sheet width direction (i.e., an X direction) transverse a sheet conveyance direction. The plurality of negative pressure chambers are disposed in a manner corresponding to the plurality of supporting portions, respectively.
    Type: Grant
    Filed: May 20, 2016
    Date of Patent: October 31, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Takahide Onuma, Tetsuji Kurata, Seiji Ogasawara, Masakazu Tsukuda, Yasunori Saito
  • Publication number: 20160347095
    Abstract: Marginless printing is performed by using a printhead which ejects ink. Information on an inclination of a sheet to be conveyed is obtained, and in performing the marginless printing at a leading end of the sheet, an image region with respect to which ink is discarded to an outside of the sheet is set based on the obtained information. Further, a platen which supports the sheet by sucking in a manner facing the printhead which ejects the ink is provided and control is performed such that in performing printing sequentially from the leading end to a trailing end of the sheet, suction force of the platen is decreased upon approach of a portion to be printed to the trailing end of the sheet.
    Type: Application
    Filed: May 20, 2016
    Publication date: December 1, 2016
    Inventors: Seiji Ogasawara, Tetsuji Kurata
  • 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
  • Publication number: 20160347091
    Abstract: A platen includes: a plurality of supporting portions capable of supporting a sheet; negative pressure chambers, to which a negative pressure is supplied, so as to suck a sheet facing the supporting portions to the supporting portions; and ink receiver and that receive ink ejected from a printhead to the outside of the sheet supported by the supporting portions. The plurality of supporting portions are arranged in a sheet width direction (i.e., an X direction) transverse a sheet conveyance direction. The plurality of negative pressure chambers are disposed in a manner corresponding to the plurality of supporting portions, respectively.
    Type: Application
    Filed: May 20, 2016
    Publication date: December 1, 2016
    Inventors: Takahide Onuma, Tetsuji Kurata, Seiji Ogasawara, Masakazu Tsukuda, Yasunori Saito
  • Publication number: 20160347093
    Abstract: A printing apparatus includes: a suction unit configured to allow a negative pressure, by which a sheet is sucked to a supporting portion, to act on the sheet; and ink receivers and configured to receive ink ejected to the outside of the sheet. Waste ink ejected to the ink receiver is guided to a waste ink discharge port formed on an outer peripheral wall of a platen through waste ink channels. A sheet sucking mechanism configured to apply the negative pressure is disposed adjacent to the suction unit. A discharging mechanism configured to forcibly discharge waste ink outside of the platen is connected to the waste ink discharge port.
    Type: Application
    Filed: May 20, 2016
    Publication date: December 1, 2016
    Inventors: Seiji Ogasawara, Tetsuji Kurata, Masakazu Tsukuda, Takahide Onuma, Yasunori Saito