Patents by Inventor Takakazu Ohashi

Takakazu Ohashi 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: 11752785
    Abstract: An image printing apparatus includes a print head configured to print an image on a printing medium; a conveyance unit configured to convey the printing medium in a conveyance direction; a detection unit movable in an intersection direction intersecting the conveyance direction and configured to detect an end of the printing medium in the intersection direction; a cutting unit located downstream of a printing region of the print head in the conveyance direction and capable of cutting the printing medium by being moved in the intersection direction; and a control unit configured to control movement of the detection unit such that the detection unit detects a position of the end of the printing medium during movement of the cutting unit for a cutting operation of cutting the printing medium.
    Type: Grant
    Filed: September 15, 2021
    Date of Patent: September 12, 2023
    Assignee: Canon Kabushiki Kaisha
    Inventor: Takakazu Ohashi
  • Publication number: 20230264495
    Abstract: A printing apparatus includes a conveyance unit, a printing unit, a platen section facing the printing unit, a regulation unit arranged on a downstream side of the printing unit in the conveyance direction and configured to regulate a height position of the print medium, and a guide section arranged on a downstream side of the platen section. The guide section includes a first declined section declined, a second declined section arranged on the downstream side of the first declined section in the conveyance direction, and an inclined section inclined, from the second declined section to the downstream side in the conveyance direction. A declination of the second declined section is more moderate than the first declined section, and the regulation unit faces the guide section.
    Type: Application
    Filed: February 10, 2023
    Publication date: August 24, 2023
    Inventors: KOHEI FUKUI, KOTA UCHIDA, YOSHIAKI SUZUKI, TAKAKAZU OHASHI, KENGO NIEDA
  • Publication number: 20230264494
    Abstract: A printing apparatus includes a conveyance unit arranged on an upstream side of a printing unit in a conveyance direction of a print medium and configured to convey the print medium to the printing unit, and a control unit configured to, after a start of printing for the print medium by the printing unit, regulate the printing by the printing unit during a time when a leading edge of the print medium conveyed by the conveyance unit is passing through a set section preset on a conveyance path of the print medium.
    Type: Application
    Filed: February 10, 2023
    Publication date: August 24, 2023
    Inventors: TAKAKAZU OHASHI, KOTA UCHIDA, YOSHIAKI SUZUKI, KENGO NIEDA, KOHEI FUKUI
  • Publication number: 20230264490
    Abstract: A printing apparatus includes a conveyance unit configured to convey a print medium in a conveyance direction, a printing unit, a plurality of rotary members arrayed in the direction intersecting a conveyance direction on a downstream side of the printing unit in the conveyance direction and configured to regulate a height position of the print medium from above the print medium, a holding member configured to rotatably hold the plurality of rotary members, a base member configured to support the holding member, and an adjustment member configured to adjust a position of the holding member in a height direction with respect to the base member.
    Type: Application
    Filed: February 10, 2023
    Publication date: August 24, 2023
    Inventors: KOTA UCHIDA, KOHEI FUKUI, YOSHIAKI SUZUKI, TAKAKAZU OHASHI, KENGO NIEDA
  • Patent number: 11535478
    Abstract: An object of the present invention is to improve throughput of continuous printing in an image printing apparatus having a cutting device that needs to be returned to a standby position for a next cutting operation. One embodiment of the present invention is an image printing apparatus having a printing unit, a conveyance unit capable of conveying a printing medium in a conveyance direction or in a returning direction opposite to the conveyance direction; and a cutting unit provided at a cutting position on a downstream side in the conveyance direction of the printing unit and configured to cut the printing medium by moving in a first direction and return to a cutting standby position for a next cutting operation by moving in a second direction opposite to the first direction.
    Type: Grant
    Filed: January 22, 2021
    Date of Patent: December 27, 2022
    Assignee: Canon Kabushiki Kaisha
    Inventor: Takakazu Ohashi
  • Publication number: 20220097423
    Abstract: An image printing apparatus includes: a print head configured to print an image on a printing medium; a conveyance unit configured to convey the printing medium in a conveyance direction; a detection unit movable in an intersection direction intersecting the conveyance direction and configured to detect an end of the printing medium in the intersection direction; a cutting unit located downstream of a printing region of the print head in the conveyance direction and capable of cutting the printing medium by being moved in the intersection direction; and a control unit configured to control movement of the detection unit such that the detection unit detects a position of the end of the printing medium during movement of the cutting unit for a cutting operation of cutting the printing medium.
    Type: Application
    Filed: September 15, 2021
    Publication date: March 31, 2022
    Inventor: Takakazu Ohashi
  • Patent number: 11122175
    Abstract: A document reading apparatus of a printing apparatus includes a document setting unit and a reading unit, the document reading apparatus being provided at a higher position compared to a printing unit. The document setting unit includes a supporting surface configured to support a document, and the reading unit is configured to read the document conveyed from the document setting unit. The document reading apparatus moves to a reading position and to a retracted position at which the document reading apparatus is retracted from the reading position. Furthermore, the printing apparatus includes a cover member configured to cover the printing unit. The cover member includes an outer surface configured to support and guide the document together with the supporting surface in a case where the document reading apparatus is at the reading position.
    Type: Grant
    Filed: January 15, 2020
    Date of Patent: September 14, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takakazu Ohashi, Hideyuki Nozawa, Itaru Wada, Ryo Harigae
  • Publication number: 20210238000
    Abstract: An object of the present invention is to improve throughput of continuous printing in an image printing apparatus having a cutting device that needs to be returned to a standby position for a next cutting operation. One embodiment of the present invention is an image printing apparatus having a printing unit, a conveyance unit capable of conveying a printing medium in a conveyance direction or in a returning direction opposite to the conveyance direction; and a cutting unit provided at a cutting position on a downstream side in the conveyance direction of the printing unit and configured to cut the printing medium by moving in a first direction and return to a cutting standby position for a next cutting operation by moving in a second direction opposite to the first direction.
    Type: Application
    Filed: January 22, 2021
    Publication date: August 5, 2021
    Inventor: Takakazu Ohashi
  • Patent number: 11020990
    Abstract: A conveyance unit of an image printing apparatus includes a conveyance member configured to nip and convey the print medium and disposed upstream of the print head in the conveyance direction but does not include a conveyance member configured to nip and convey the print medium and disposed downstream of the print head in the conveyance direction. In a case where a trailing edge margin length indicated by the trailing edge margin information is shorter than a first length, a control unit of the image printing apparatus controls the print head and the conveyance unit such that at least one scan of the print head for printing the image is performed after a trailing edge of the print medium in the conveyance direction passes by the conveyance member disposed upstream of the print head.
    Type: Grant
    Filed: February 25, 2020
    Date of Patent: June 1, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Naoki Zaizen, Takakazu Ohashi
  • Patent number: 10745225
    Abstract: A printing apparatus has a conveyance roller and a driven roller disposed upstream of a print head in the first direction, a platen facing the print head and supporting the print medium, a producing unit producing a holding force for holding the print medium at the platen. A conveyance operation includes a first conveyance operation in which the print medium is conveyed without any release from between the conveyance roller and the driven roller and a second conveyance operation in which the print medium is released from between the conveyance roller and the driven roller. A rotation amount of the conveyance roller during the second conveyance operation is increased than that during the first conveyance operation.
    Type: Grant
    Filed: January 8, 2019
    Date of Patent: August 18, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takakazu Ohashi, Kouhei Tokuda
  • Publication number: 20200236236
    Abstract: A document reading apparatus of a printing apparatus includes a document setting unit and a reading unit, the document reading apparatus being provided at a higher position compared to the printing unit, the document setting unit including a supporting surface configured to support a document, the reading unit being configured to read the document conveyed from the document setting unit. The document reading apparatus moves to a reading position and to a retracted position, in which the document reading apparatus is retracted from the reading position. Furthermore, the printing apparatus includes a cover member configured to cover the printing unit. The cover member includes an outer surface configured to support and guide the document together with the supporting surface in a case where the document reading apparatus is at the reading position.
    Type: Application
    Filed: January 15, 2020
    Publication date: July 23, 2020
    Inventors: Takakazu Ohashi, Hideyuki Nozawa, Itaru Wada, Ryo Harigae
  • Publication number: 20200189297
    Abstract: A conveyance unit of an image printing apparatus includes a conveyance member configured to nip and convey the print medium and disposed upstream of the print head in the conveyance direction but does not include a conveyance member configured to nip and convey the print medium and disposed downstream of the print head in the conveyance direction. In a case where a trailing edge margin length indicated by the trailing edge margin information is shorter than a first length, a control unit of the image printing apparatus controls the print head and the conveyance unit such that at least one scan of the print head for printing the image is performed after a trailing edge of the print medium in the conveyance direction passes by the conveyance member disposed upstream of the print head.
    Type: Application
    Filed: February 25, 2020
    Publication date: June 18, 2020
    Inventors: Naoki Zaizen, Takakazu Ohashi
  • Patent number: 10611177
    Abstract: A conveyance unit of an image printing apparatus includes a conveyance member configured to nip and convey the print medium and disposed upstream of the print head in the conveyance direction but does not include a conveyance member configured to nip and convey the print medium and disposed downstream of the print head in the conveyance direction. In a case where a trailing edge margin length indicated by the trailing edge margin information is shorter than a first length, a control unit of the image printing apparatus controls the print head and the conveyance unit such that at least one scan of the print head for printing the image is performed after a trailing edge of the print medium in the conveyance direction passes by the conveyance member disposed upstream of the print head.
    Type: Grant
    Filed: January 25, 2019
    Date of Patent: April 7, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventors: Naoki Zaizen, Takakazu Ohashi
  • Patent number: 10549558
    Abstract: A cutter unit is attached to a carriage in a predetermined direction, the carriage moving in a cutting direction of a sheet. A first set of first fitting sections and a second set of second fitting sections are provided as groups of fitting sections provided at positions, which face each other, on the carriage and the cutter unit. The first fitting sections and the second fitting sections each of which are fitted to each other in a predetermined direction. When the cutter unit is attached to the carriage, the fitting of the first fitting sections starts before the fitting of the second fitting sections.
    Type: Grant
    Filed: September 22, 2016
    Date of Patent: February 4, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shuichi Masuda, Naoki Wakayama, Masakazu Nagashima, Daiki Anayama, Tetsuo Kikuchi, Takakazu Ohashi
  • Patent number: 10457516
    Abstract: A sheet storage apparatus according to an embodiment of the present invention includes a receiving unit which receives a sheet that is discharged from a discharge port at a position below the discharge port, and a sheet butting unit which is provided in the vicinity of the receiving unit and receives a front end portion of the sheet. The sheet butting unit has a projection which is provided on at least one of an inner side surface and an inner upper surface of the sheet butting unit. The projection is configured to be capable of retaining a state of regulating vertically upward movement of the front end portion of the sheet being discharged from the discharge port.
    Type: Grant
    Filed: February 8, 2018
    Date of Patent: October 29, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takakazu Ohashi, Daiki Anayama, Hiromasa Yoneyama, Yasuyuki Asai, Takuya Suto, Tetsuo Kikuchi, Itaru Wada
  • Publication number: 20190232689
    Abstract: A printing apparatus has a conveyance roller and a driven roller disposed upstream of a print head in the first direction, a platen facing the print head and supporting the print medium, a producing unit producing a holding force for holding the print medium at the platen. A conveyance operation includes a first conveyance operation in which the print medium is conveyed without any release from between the conveyance roller and the driven roller and a second conveyance operation in which the print medium is released from between the conveyance roller and the driven roller. A rotation amount of the conveyance roller during the second conveyance operation is increased than that during the first conveyance operation.
    Type: Application
    Filed: January 8, 2019
    Publication date: August 1, 2019
    Inventors: Takakazu Ohashi, Kouhei Tokuda
  • Publication number: 20190232686
    Abstract: A conveyance unit of an image printing apparatus includes a conveyance member configured to nip and convey the print medium and disposed upstream of the print head in the conveyance direction but does not include a conveyance member configured to nip and convey the print medium and disposed downstream of the print head in the conveyance direction. In a case where a trailing edge margin length indicated by the trailing edge margin information is shorter than a first length, a control unit of the image printing apparatus controls the print head and the conveyance unit such that at least one scan of the print head for printing the image is performed after a trailing edge of the print medium in the conveyance direction passes by the conveyance member disposed upstream of the print head.
    Type: Application
    Filed: January 25, 2019
    Publication date: August 1, 2019
    Inventors: Naoki Zaizen, Takakazu Ohashi
  • Patent number: 10150637
    Abstract: There is provided a stacking apparatus capable of stably conveying and stacking sheets without occurrence of damage or buckling of the sheets in the structure of discharging the curled sheets one by one. In regard to each of a plurality of clamp guides which project toward stacking trays from a conveyor to guide sheets S, the projecting position varies in accordance with a size and an amount of stacked sheets on the stack trays. The stacking tray comprises an inclined surface and a curved surface. An upper guide is located to face the inclined surface by a predetermined interval, and the upper guide is located not to face the curved surface or is located to face it by an interval larger than a predetermined interval.
    Type: Grant
    Filed: June 13, 2017
    Date of Patent: December 11, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventors: Naoki Wakayama, Shuichi Masuda, Takakazu Ohashi, Ryohei Maruyama
  • Patent number: 10124609
    Abstract: In order to reliably cut a sheet even when the width of the sheet is changed while shortening cutting time, the position of an end portion of the sheet is sensed and a cutting range is set according to the sensed position of the end portion.
    Type: Grant
    Filed: September 22, 2016
    Date of Patent: November 13, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tetsuo Kikuchi, Naoki Wakayama, Shuichi Masuda, Masakazu Nagashima, Daiki Anayama, Takakazu Ohashi
  • Publication number: 20180244484
    Abstract: A sheet storage apparatus according to an embodiment of the present invention includes a receiving unit which receives a sheet that is discharged from a discharge port at a position below the discharge port, and a sheet butting unit which is provided in the vicinity of the receiving unit and receives a front end portion of the sheet. The sheet butting unit has a projection which is provided on at least one of an inner side surface and an inner upper surface of the sheet butting unit. The projection is configured to be capable of retaining a state of regulating vertically upward movement of the front end portion of the sheet being discharged from the discharge port.
    Type: Application
    Filed: February 8, 2018
    Publication date: August 30, 2018
    Inventors: Takakazu Ohashi, Daiki Anayama, Hiromasa Yoneyama, Yasuyuki Asai, Takuya Suto, Tetsuo Kikuchi, Itaru Wada