Patents by Inventor Yasufumi Tanaami

Yasufumi Tanaami 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: 10894432
    Abstract: A printing apparatus comprises a conveyance control unit which controls conveyance of printing sheets so that a trailing edge of a preceding sheet as a printing sheet precedingly fed from the stacking unit and a leading edge of a succeeding sheet as a printing sheet succeedingly fed from the stacking unit overlap each other; and a skew correction unit which performs skew correction of the succeeding sheet while the succeeding sheet overlaps the preceding sheet by the conveyance control unit. The skew correction unit makes the leading edge of the succeeding sheet abut against the conveyance roller during a time from an end of a last line feed operation by the conveyance roller for printing on the preceding sheet by the printing unit to start of a next conveyance operation.
    Type: Grant
    Filed: September 17, 2019
    Date of Patent: January 19, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yasuyuki Asai, Syunichi Kunihiro, Naoki Aoyama, Katsuya Ogawa, Noriyuki Sugiyama, Yasufumi Tanaami, Ryo Yonemoto
  • Patent number: 10596838
    Abstract: In a printing apparatus, a platen configured to support a sheet to be printed includes an ink receiver configured to receive ink discharged from a print head. The ink receiver includes a plurality of first ink grooves and a plurality of second ink grooves configured to guide the received ink, the second ink grooves having a tilt angle greater than that of the first ink grooves. The platen includes an absorber configured to absorb the ink received by the ink receiver, the absorber being arranged on a back side of the ink receiver.
    Type: Grant
    Filed: August 24, 2017
    Date of Patent: March 24, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masakazu Tsukuda, Atsushi Kohnotoh, Tsuyoshi Yoshida, Yuki Emoto, Koki Shimada, Kuniaki Sato, Yasufumi Tanaami, Kanto Kurasawa, Katsuyuki Yokoi
  • Publication number: 20200009886
    Abstract: A printing apparatus comprises a conveyance control unit which controls conveyance of printing sheets so that a trailing edge of a preceding sheet as a printing sheet precedingly fed from the stacking unit and a leading edge of a succeeding sheet as a printing sheet succeedingly fed from the stacking unit overlap each other; and a skew correction unit which performs skew correction of the succeeding sheet while the succeeding sheet overlaps the preceding sheet by the conveyance control unit. The skew correction unit makes the leading edge of the succeeding sheet abut against the conveyance roller during a time from an end of a last line feed operation by the conveyance roller for printing on the preceding sheet by the printing unit to start of a next conveyance operation.
    Type: Application
    Filed: September 17, 2019
    Publication date: January 9, 2020
    Inventors: Yasuyuki Asai, Syunichi Kunihiro, Naoki Aoyama, Katsuya Ogawa, Noriyuki Sugiyama, Yasufumi Tanaami, Ryo Yonemoto
  • Patent number: 10486445
    Abstract: A printing apparatus comprises a conveyance control unit which controls conveyance of printing sheets so that a trailing edge of a preceding sheet as a printing sheet precedingly fed from the stacking unit and a leading edge of a succeeding sheet as a printing sheet succeedingly fed from the stacking unit overlap each other; and a skew correction unit which performs skew correction of the succeeding sheet while the succeeding sheet overlaps the preceding sheet by the conveyance control unit. The skew correction unit makes the leading edge of the succeeding sheet abut against the conveyance roller during a time from an end of a last line feed operation by the conveyance roller for printing on the preceding sheet by the printing unit to start of a next conveyance operation.
    Type: Grant
    Filed: April 3, 2017
    Date of Patent: November 26, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yasuyuki Asai, Syunichi Kunihiro, Naoki Aoyama, Katsuya Ogawa, Noriyuki Sugiyama, Yasufumi Tanaami, Ryo Yonemoto
  • Publication number: 20170348986
    Abstract: In a printing apparatus, a platen configured to support a sheet to be printed includes an ink receiver configured to receive ink discharged from a print head. The ink receiver includes a plurality of first ink grooves and a plurality of second ink grooves configured to guide the received ink, the second ink grooves having a tilt angle greater than that of the first ink grooves. The platen includes an absorber configured to absorb the ink received by the ink receiver, the absorber being arranged on a back side of the ink receiver.
    Type: Application
    Filed: August 24, 2017
    Publication date: December 7, 2017
    Inventors: Masakazu Tsukuda, Atsushi Kohnotoh, Tsuyoshi Yoshida, Yuki Emoto, Koki Shimada, Kuniaki Sato, Yasufumi Tanaami, Kanto Kurasawa, Katsuyuki Yokoi
  • Publication number: 20170203589
    Abstract: A printing apparatus comprises a conveyance control unit which controls conveyance of printing sheets so that a trailing edge of a preceding sheet as a printing sheet precedingly fed from the stacking unit and a leading edge of a succeeding sheet as a printing sheet succeedingly fed from the stacking unit overlap each other; and a skew correction unit which performs skew correction of the succeeding sheet while the succeeding sheet overlaps the preceding sheet by the conveyance control unit. The skew correction unit makes the leading edge of the succeeding sheet abut against the conveyance roller during a time from an end of a last line feed operation by the conveyance roller for printing on the preceding sheet by the printing unit to start of a next conveyance operation.
    Type: Application
    Filed: April 3, 2017
    Publication date: July 20, 2017
    Inventors: Yasuyuki Asai, Syunichi Kunihiro, Naoki Aoyama, Katsuya Ogawa, Noriyuki Sugiyama, Yasufumi Tanaami, Ryo Yonemoto
  • Patent number: 9676213
    Abstract: A printing apparatus comprises a conveyance control unit which controls conveyance of printing sheets so that a trailing edge of a preceding sheet as a printing sheet precedingly fed from the stacking unit and a leading edge of a succeeding sheet as a printing sheet succeedingly fed from the stacking unit overlap each other; and a skew correction unit which performs skew correction of the succeeding sheet while the succeeding sheet overlaps the preceding sheet by the conveyance control unit. The skew correction unit makes the leading edge of the succeeding sheet abut against the conveyance roller during a time from an end of a last line feed operation by the conveyance roller for printing on the preceding sheet by the printing unit to start of a next conveyance operation.
    Type: Grant
    Filed: July 8, 2016
    Date of Patent: June 13, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yasuyuki Asai, Syunichi Kunihiro, Naoki Aoyama, Katsuya Ogawa, Noriyuki Sugiyama, Yasufumi Tanaami, Ryo Yonemoto
  • Patent number: 9597900
    Abstract: The present invention provides a printing apparatus. The printing apparatus includes a feeding unit, a pair of rollers configured to nip a printing medium and to convey the printing medium fed by the feeding unit, a printing unit and a control unit. The control unit can execute successive overlapped conveyance in which the pair of rollers nip an overlapping portion between a trailing edge of a preceding printing medium and a leading edge of a succeeding printing medium and convey them. The control unit executes the successive overlapped conveyance at least on condition that printing of the preceding printing medium by the printing unit has ended.
    Type: Grant
    Filed: May 28, 2015
    Date of Patent: March 21, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yasufumi Tanaami, Tetsuya Saito, Noriyuki Sugiyama, Syunichi Kunihiro
  • Publication number: 20160318319
    Abstract: A printing apparatus comprises a conveyance control unit which controls conveyance of printing sheets so that a trailing edge of a preceding sheet as a printing sheet precedingly fed from the stacking unit and a leading edge of a succeeding sheet as a printing sheet succeedingly fed from the stacking unit overlap each other; and a skew correction unit which performs skew correction of the succeeding sheet while the succeeding sheet overlaps the preceding sheet by the conveyance control unit. The skew correction unit makes the leading edge of the succeeding sheet abut against the conveyance roller during a time from an end of a last line feed operation by the conveyance roller for printing on the preceding sheet by the printing unit to start of a next conveyance operation.
    Type: Application
    Filed: July 8, 2016
    Publication date: November 3, 2016
    Inventors: Yasuyuki Asai, Syunichi Kunihiro, Naoki Aoyama, Katsuya Ogawa, Noriyuki Sugiyama, Yasufumi Tanaami, Ryo Yonemoto
  • Publication number: 20160288505
    Abstract: In a printing apparatus, a platen configured to support a sheet to be printed includes an ink receiver configured to receive ink discharged from a print head. The ink receiver includes a plurality of first ink grooves and a plurality of second ink grooves configured to guide the received ink, the second ink grooves having a tilt angle greater than that of the first ink grooves. The platen includes an absorber configured to absorb the ink received by the ink receiver, the absorber being arranged on a back side of the ink receiver.
    Type: Application
    Filed: March 28, 2016
    Publication date: October 6, 2016
    Inventors: Masakazu Tsukuda, Atsushi Kohnotoh, Tsuyoshi Yoshida, Yuki Emoto, Koki Shimada, Kuniaki Sato, Yasufumi Tanaami, Kanto Kurasawa, Katsuyuki Yokoi
  • Patent number: 9428355
    Abstract: A printing apparatus has a conveyance control unit which controls conveyance of printing sheets so that a trailing edge of a preceding sheet as a printing sheet precedingly fed from the stacking unit and a leading edge of a succeeding sheet as a printing sheet succeedingly fed from the stacking unit overlap each other; and a skew correction unit which performs skew correction of the succeeding sheet while the succeeding sheet overlaps the preceding sheet by the conveyance control unit. The skew correction unit makes the leading edge of the succeeding sheet abut against the conveyance roller during a time from an end of a last line feed operation by the conveyance roller for printing on the preceding sheet by the printing unit to start of a next conveyance operation.
    Type: Grant
    Filed: May 27, 2015
    Date of Patent: August 30, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yasuyuki Asai, Syunichi Kunihiro, Naoki Aoyama, Katsuya Ogawa, Noriyuki Sugiyama, Yasufumi Tanaami, Ryo Yonemoto
  • Publication number: 20150353311
    Abstract: A printing apparatus comprises a conveyance control unit which controls conveyance of printing sheets so that a trailing edge of a preceding sheet as a printing sheet precedingly fed from the stacking unit and a leading edge of a succeeding sheet as a printing sheet succeedingly fed from the stacking unit overlap each other; and a skew correction unit which performs skew correction of the succeeding sheet while the succeeding sheet overlaps the preceding sheet by the conveyance control unit. The skew correction unit makes the leading edge of the succeeding sheet abut against the conveyance roller during a time from an end of a last line feed operation by the conveyance roller for printing on the preceding sheet by the printing unit to start of a next conveyance operation.
    Type: Application
    Filed: May 27, 2015
    Publication date: December 10, 2015
    Inventors: Yasuyuki Asai, Syunichi Kunihiro, Naoki Aoyama, Katsuya Ogawa, Noriyuki Sugiyama, Yasufumi Tanaami, Ryo Yonemoto
  • Publication number: 20150352866
    Abstract: The present invention provides a printing apparatus. The printing apparatus includes a feeding unit, a pair of rollers configured to nip a printing medium and to convey the printing medium fed by the feeding unit, a printing unit and a control unit. The control unit can execute successive overlapped conveyance in which the pair of rollers nip an overlapping portion between a trailing edge of a preceding printing medium and a leading edge of a succeeding printing medium and convey them. The control unit executes the successive overlapped conveyance at least on condition that printing of the preceding printing medium by the printing unit has ended.
    Type: Application
    Filed: May 28, 2015
    Publication date: December 10, 2015
    Inventors: Yasufumi Tanaami, Tetsuya Saito, Noriyuki Sugiyama, Syunichi Kunihiro
  • Patent number: 8944584
    Abstract: An ink jet recording apparatus capable of landing an ink drop on an exact position on a recording medium is provided. The ink jet recording apparatus performs recording on a recording medium which has been subjected to application processing with a pretreatment liquid. The ink jet recording apparatus has an electrostatic belt which has a resistance layer formed on the surface thereof, and a power feed roller which imparts charges to the surface of the electrostatic belt. The recording head discharges ink to the surface of the recording medium when the back of the recording medium comes into contact with the surface of the electrostatic belt to which the charges have been imparted.
    Type: Grant
    Filed: December 6, 2010
    Date of Patent: February 3, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Atsushi Sakamoto, Hitoshi Nishikori, Nozomu Nishiberi, Yasuyuki Hirai, Yasufumi Tanaami
  • Patent number: 8864301
    Abstract: A rotary member support apparatus includes a rotary member configured to receive a force in a radial direction and having at a rotation center a cylindrical bearing portion, and a support shaft to be inserted into the bearing portion, wherein the support shaft is formed so as to have at least two protrusions including curved surfaces internally touching the bearing portion of the rotary member.
    Type: Grant
    Filed: January 3, 2012
    Date of Patent: October 21, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yasufumi Tanaami
  • Patent number: 8641184
    Abstract: Provided is a recording medium conveying mechanism including an endless center conveying belt and endless side conveying belts, the endless center conveying belt and the endless side conveying belts being looped over a driving roller to be driven by a motor, a driven roller and a tension roller. The center conveying belt is positioned in a center in a width direction of a recording medium to be conveyed, and the side conveying belts are positioned on opposite sides in a width direction of the center conveying belt, respectively. The center conveying belt includes a material with a high elastic modulus while the side conveying belts include a material with a low elastic modulus, and a biasing member for providing a tension to the center conveying belt and the side conveying belts is provided on a shaft of the tension roller.
    Type: Grant
    Filed: November 15, 2010
    Date of Patent: February 4, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Nozomu Nishiberi, Yasufumi Tanaami, Yasuyuki Hirai
  • Publication number: 20120169817
    Abstract: A rotary member support apparatus includes a rotary member configured to receive a force in a radial direction and having at a rotation center a cylindrical bearing portion, and a support shaft to be inserted into the bearing portion, wherein the support shaft is formed so as to have at least two protrusions including curved surfaces internally touching the bearing portion of the rotary member.
    Type: Application
    Filed: January 3, 2012
    Publication date: July 5, 2012
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Yasufumi Tanaami
  • Publication number: 20110141213
    Abstract: An ink jet recording apparatus capable of landing an ink drop on an exact position on a recording medium is provided. An ink jet recording apparatus performs recording on a recording medium A which has been subjected to application processing with a pretreatment liquid. The ink jet recording apparatus has an electrostatic belt which has a resistance layer formed on the surface thereof, and a power feed roller which imparts charges to the surface of the electrostatic belt. The recording head discharges ink to the surface of the recording medium when the back of the recording medium comes into contact with the surface of the electrostatic belt to which the charges have been imparted.
    Type: Application
    Filed: December 6, 2010
    Publication date: June 16, 2011
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Atsushi Sakamoto, Hitoshi Nishikori, Nozomu Nishiberi, Yasuyuki Hirai, Yasufumi Tanaami
  • Publication number: 20110134201
    Abstract: Provided is a recording medium conveying mechanism including an endless center conveying belt and endless side conveying belts, the endless center conveying belt and the endless side conveying belts being looped over a driving roller to be driven by a motor, a driven roller and a tension roller. The center conveying belt is positioned in a center in a width direction of a recording medium to be conveyed, and the side conveying belts are positioned on opposite sides in a width direction of the center conveying belt, respectively. The center conveying belt includes a material with a high elastic modulus while the side conveying belts include a material with a low elastic modulus, and a biasing member for providing a tension to the center conveying belt and the side conveying belts is provided on a shaft of the tension roller.
    Type: Application
    Filed: November 15, 2010
    Publication date: June 9, 2011
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Nozomu Nishiberi, Yasufumi Tanaami, Yasuyuki Hirai
  • Patent number: 7762550
    Abstract: According to detection results obtained by a plurality of printing medium detection device, a printing medium is carried in while controlling an operation of pressing a pinch roller to be in contact with a conveying roller and of separating the pinch roller from the conveying roller and an operation of pressing a spur to be in contact with a eject roller and of separating the spur from the eject roller. Accordingly, it is made possible to carry the printing medium into the apparatus in a proper state even when the printing medium is a nonstandard-sized printing medium. Moreover, while effectively utilizing one driving source, a plurality of mechanism is independently controlled. Hence, accurately controlled flat-pass printing can be realized despite of the relatively small number of components.
    Type: Grant
    Filed: July 9, 2009
    Date of Patent: July 27, 2010
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yasufumi Tanaami