Patents by Inventor Taku Hirashima

Taku Hirashima 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: 11254531
    Abstract: While a cover moves to a closed position, a second engagement portion contacts a first engagement portion to displace the first engagement portion, and thus a guide portion moves to a guide position. While the cover moves from the closed position to a first open position, the second engagement portion and the first engagement portion are separated, and the guide portion moves from the guide position to an open position.
    Type: Grant
    Filed: February 27, 2020
    Date of Patent: February 22, 2022
    Assignee: Seiko Epson Corporation
    Inventors: Kenichi Hirabayashi, Taku Hirashima
  • Publication number: 20200277151
    Abstract: While a cover moves to a closed position, a second engagement portion contacts a first engagement portion to displace the first engagement portion, and thus a guide portion moves to a guide position. While the cover moves from the closed position to a first open position, the second engagement portion and the first engagement portion are separated, and the guide portion moves from the guide position to an open position.
    Type: Application
    Filed: February 27, 2020
    Publication date: September 3, 2020
    Inventors: Kenichi HIRABAYASHI, Taku HIRASHIMA
  • Patent number: 10661584
    Abstract: A simple configuration enables easily changing the open or closed state of multiple suction holes while assuring suction. A shutter drum rotates centered on an axis of rotation extending on a transverse axis, and a suction fan that produces negative pressure inside the shutter drum. When one suction hole on the transverse axis is a first suction hole, and another suction hole adjacent on the transverse axis to the first suction hole is a second suction hole, a first communication path including a suction chamber and through-hole communicates with the first suction hole, and a second communication path including a suction chamber and through-hole communicates with the second suction hole. The shutter drum functions as a shutter that, by rotating, selectively changes the open or closed state of the first and second communication paths.
    Type: Grant
    Filed: January 19, 2018
    Date of Patent: May 26, 2020
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Taku Hirashima
  • Patent number: 10226947
    Abstract: A printer includes: an inkjet head configured to eject ink to a medium; a vacuum platen having a platen surface and suction holes, the platen surface extending along a transverse axis that intersects the conveyance direction and that spans across a first side and a second side of the printer, and the suction holes, the suction holes including a first suction hole; and a suction unit configured to produce a negative pressure within the suction holes; the first suction hole comprising a first opening and a second opening, the width of the second opening being less than the width of the first opening, and the first opening having a center along the transverse axis, the second opening having a center along the transverse axis, the center of the second opening being offset to the first side along the transverse axis from the center of the first opening.
    Type: Grant
    Filed: January 18, 2018
    Date of Patent: March 12, 2019
    Assignee: Seiko Epson Corporation
    Inventor: Taku Hirashima
  • Publication number: 20180207964
    Abstract: A simple configuration enables easily changing the open or closed state of multiple suction holes while assuring suction. A shutter drum rotates centered on an axis of rotation extending on a transverse axis, and a suction fan that produces negative pressure inside the shutter drum. When one suction hole on the transverse axis is a first suction hole, and another suction hole adjacent on the transverse axis to the first suction hole is a second suction hole, a first communication path including a suction chamber and through-hole communicates with the first suction hole, and a second communication path including a suction chamber and through-hole communicates with the second suction hole. The shutter drum functions as a shutter that, by rotating, selectively changes the open or closed state of the first and second communication paths.
    Type: Application
    Filed: January 19, 2018
    Publication date: July 26, 2018
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Taku HIRASHIMA
  • Publication number: 20180207959
    Abstract: A printer includes: an inkjet head configured to eject ink to a medium; a vacuum platen having a platen surface and suction holes, the platen surface extending along a transverse axis that intersects the conveyance direction and that spans across a first side and a second side of the printer, and the suction holes, the suction holes including a first suction hole; and a suction unit configured to produce a negative pressure within the suction holes; the first suction hole comprising a first opening and a second opening, the width of the second opening being less than the width of the first opening, and the first opening having a center along the transverse axis, the second opening having a center along the transverse axis, the center of the second opening being offset to the first side along the transverse axis from the center of the first opening.
    Type: Application
    Filed: January 18, 2018
    Publication date: July 26, 2018
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Taku HIRASHIMA
  • Patent number: 9751347
    Abstract: A printer has a platen top unit fastened above the platen unit. The platen top unit is separate from the platen unit, and has first star wheels and second star wheels disposed on parallel horizontal frame members extending perpendicularly to the media conveyance direction above the platen surface. The first star wheels and second star wheels prevent the continuous paper conveyed over the platen surface from lifting away from the platen surface.
    Type: Grant
    Filed: March 22, 2016
    Date of Patent: September 5, 2017
    Assignee: Seiko Epson Corporation
    Inventors: Taku Hirashima, Hironori Maekawa
  • Patent number: 9643437
    Abstract: A simple configuration avoids exposure of a star wheel that prevents the media from lifting up when the media conveyance path opens. A platen top unit 20 that supports first and second star wheels 25A, 25B is separated from an opening and closing platen unit 8, and is supported movably vertically. when the platen unit 8 is moved to the open position 8B to open the third conveyance path section 10c of the conveyance path 10 when a paper jam occurs, for example, the head elevator 17 is controlled to raise the platen top unit 20 and retract the first and second star wheels 25A, 25B supported by the platen top unit 20 to a position removed from easy contact with the user's hands.
    Type: Grant
    Filed: March 23, 2016
    Date of Patent: May 9, 2017
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Fumihiko Yanagisawa, Taku Hirashima
  • Patent number: 9566809
    Abstract: The carriage of a line printer has a head unit that supports a printhead, and a carriage frame that supports the head unit movably up and down. When moving the carriage from a standby position to an opposing position, the carriage is moved while the head unit is held at a up position where the gap to the platen unit is a first distance. The head unit is then lowered at the standby position from the up position to a down position where the platen gap is a second distance that is shorter than the first distance.
    Type: Grant
    Filed: February 10, 2016
    Date of Patent: February 14, 2017
    Assignee: Seiko Epson Corporation
    Inventors: Norio Nagata, Hironori Maekawa, Takashi Aoki, Taku Hirashima
  • Publication number: 20160288539
    Abstract: A simple configuration avoids exposure of a star wheel that prevents the media from lifting up when the media conveyance path opens. A platen top unit 20 that supports first and second star wheels 25A, 25B is separated from an opening and closing platen unit 8, and is supported movably vertically. when the platen unit 8 is moved to the open position 8B to open the third conveyance path section 10c of the conveyance path 10 when a paper jam occurs, for example, the head elevator 17 is controlled to raise the platen top unit 20 and retract the first and second star wheels 25A, 25B supported by the platen top unit 20 to a position removed from easy contact with the user's hands.
    Type: Application
    Filed: March 23, 2016
    Publication date: October 6, 2016
    Applicant: Seiko Epson Corporation
    Inventors: Fumihiko YANAGISAWA, Taku HIRASHIMA
  • Publication number: 20160214420
    Abstract: A printer has a platen top unit fastened above the platen unit. The platen top unit is separate from the platen unit, and has first star wheels and second star wheels disposed on parallel horizontal frame members extending perpendicularly to the media conveyance direction above the platen surface. The first star wheels and second star wheels prevent the continuous paper conveyed over the platen surface from lifting away from the platen surface.
    Type: Application
    Filed: March 22, 2016
    Publication date: July 28, 2016
    Applicant: Seiko Epson Corporation
    Inventors: Taku Hirashima, Hironori Maekawa
  • Publication number: 20160159121
    Abstract: The carriage of a line printer has a head unit that supports a printhead, and a carriage frame that supports the head unit movably up and down. When moving the carriage from a standby position to an opposing position, the carriage is moved while the head unit is held at a up position where the gap to the platen unit is a first distance. The head unit is then lowered at the standby position from the up position to a down position where the platen gap is a second distance that is shorter than the first distance.
    Type: Application
    Filed: February 10, 2016
    Publication date: June 9, 2016
    Applicant: Seiko Epson Corporation
    Inventors: Norio Nagata, Hironori Maekawa, Takashi Aoki, Taku Hirashima
  • Patent number: 9321285
    Abstract: A printer has a platen top unit fastened above the platen unit. The platen top unit is separate from the platen unit, and has first star wheels and second star wheels disposed on parallel horizontal frame members extending perpendicularly to the media conveyance direction above the platen surface. The first star wheels and second star wheels prevent the continuous paper conveyed over the platen surface from lifting away from the platen surface.
    Type: Grant
    Filed: November 11, 2014
    Date of Patent: April 26, 2016
    Assignee: Seiko Epson Corporation
    Inventors: Taku Hirashima, Hironori Maekawa
  • Patent number: 9290027
    Abstract: The carriage of a line printer has a head unit that supports a printhead, and a carriage frame that supports the head unit movably up and down. When moving the carriage from a standby position to an opposing position, the carriage is moved while the head unit is held at a up position where the gap to the platen unit is a first distance. The head unit is then lowered at the standby position from the up position to a down position where the platen gap is a second distance that is shorter than the first distance.
    Type: Grant
    Filed: October 30, 2014
    Date of Patent: March 22, 2016
    Assignee: Seiko Epson Corporation
    Inventors: Norio Nagata, Hironori Maekawa, Takashi Aoki, Taku Hirashima
  • Patent number: 9272551
    Abstract: A liquid ejecting apparatus includes: a liquid ejecting head unit which has liquid ejecting heads that eject liquid; an in-head roller which abuts against a landing surface of an ejecting medium; and a frame which pivotally supports the in-head roller. The liquid ejecting head unit is provided to be able to ascend and descend with respect to the frame. In the liquid ejecting head unit, at least two head rows, each of which includes the liquid ejecting heads and a void aligned in a reference direction intersecting a transporting direction of the ejecting medium, are arranged in the transporting direction. The in-head roller is disposed at a position where at least a part of the in-head roller faces the void, in a direction which is orthogonal to the landing surface.
    Type: Grant
    Filed: March 11, 2015
    Date of Patent: March 1, 2016
    Assignee: Seiko Epson Corporation
    Inventors: Fumiya Takino, Taku Hirashima
  • Publication number: 20150273907
    Abstract: A liquid ejecting apparatus includes: a liquid ejecting head unit which has liquid ejecting heads that eject liquid; an in-head roller which abuts against a landing surface of an ejecting medium; and a frame which pivotally supports the in-head roller. The liquid ejecting head unit is provided to be able to ascend and descend with respect to the frame. In the liquid ejecting head unit, at least two head rows, each of which includes the liquid ejecting heads and a void aligned in a reference direction intersecting a transporting direction of the ejecting medium, are arranged in the transporting direction. The in-head roller is disposed at a position where at least a part of the in-head roller faces the void, in a direction which is orthogonal to the landing surface.
    Type: Application
    Filed: March 11, 2015
    Publication date: October 1, 2015
    Inventors: Fumiya TAKINO, Taku HIRASHIMA
  • Publication number: 20150197105
    Abstract: A printer has a platen top unit fastened above the platen unit. The platen top unit is separate from the platen unit, and has first star wheels and second star wheels disposed on parallel horizontal frame members extending perpendicularly to the media conveyance direction above the platen surface. The first star wheels and second star wheels prevent the continuous paper conveyed over the platen surface from lifting away from the platen surface.
    Type: Application
    Filed: November 11, 2014
    Publication date: July 16, 2015
    Inventors: Taku Hirashima, Hironori Maekawa
  • Publication number: 20150116424
    Abstract: The carriage of a line printer has a head unit that supports a printhead, and a carriage frame that supports the head unit movably up and down. When moving the carriage from a standby position to an opposing position, the carriage is moved while the head unit is held at a up position where the gap to the platen unit is a first distance. The head unit is then lowered at the standby position from the up position to a down position where the platen gap is a second distance that is shorter than the first distance.
    Type: Application
    Filed: October 30, 2014
    Publication date: April 30, 2015
    Applicant: Seiko Epson Corporation
    Inventors: Norio Nagata, Hironori Maekawa, Takashi Aoki, Taku Hirashima
  • Patent number: D802658
    Type: Grant
    Filed: February 3, 2016
    Date of Patent: November 14, 2017
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Fumiya Takino, Taku Hirashima