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).
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Patent number: 11254531Abstract: 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: GrantFiled: February 27, 2020Date of Patent: February 22, 2022Assignee: Seiko Epson CorporationInventors: Kenichi Hirabayashi, Taku Hirashima
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Publication number: 20200277151Abstract: 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: ApplicationFiled: February 27, 2020Publication date: September 3, 2020Inventors: Kenichi HIRABAYASHI, Taku HIRASHIMA
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Patent number: 10661584Abstract: 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: GrantFiled: January 19, 2018Date of Patent: May 26, 2020Assignee: SEIKO EPSON CORPORATIONInventor: Taku Hirashima
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Patent number: 10226947Abstract: 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: GrantFiled: January 18, 2018Date of Patent: March 12, 2019Assignee: Seiko Epson CorporationInventor: Taku Hirashima
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Publication number: 20180207964Abstract: 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: ApplicationFiled: January 19, 2018Publication date: July 26, 2018Applicant: SEIKO EPSON CORPORATIONInventor: Taku HIRASHIMA
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Publication number: 20180207959Abstract: 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: ApplicationFiled: January 18, 2018Publication date: July 26, 2018Applicant: SEIKO EPSON CORPORATIONInventor: Taku HIRASHIMA
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Patent number: 9751347Abstract: 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: GrantFiled: March 22, 2016Date of Patent: September 5, 2017Assignee: Seiko Epson CorporationInventors: Taku Hirashima, Hironori Maekawa
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Patent number: 9643437Abstract: 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: GrantFiled: March 23, 2016Date of Patent: May 9, 2017Assignee: SEIKO EPSON CORPORATIONInventors: Fumihiko Yanagisawa, Taku Hirashima
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Patent number: 9566809Abstract: 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: GrantFiled: February 10, 2016Date of Patent: February 14, 2017Assignee: Seiko Epson CorporationInventors: Norio Nagata, Hironori Maekawa, Takashi Aoki, Taku Hirashima
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Publication number: 20160288539Abstract: 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: ApplicationFiled: March 23, 2016Publication date: October 6, 2016Applicant: Seiko Epson CorporationInventors: Fumihiko YANAGISAWA, Taku HIRASHIMA
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Publication number: 20160214420Abstract: 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: ApplicationFiled: March 22, 2016Publication date: July 28, 2016Applicant: Seiko Epson CorporationInventors: Taku Hirashima, Hironori Maekawa
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Publication number: 20160159121Abstract: 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: ApplicationFiled: February 10, 2016Publication date: June 9, 2016Applicant: Seiko Epson CorporationInventors: Norio Nagata, Hironori Maekawa, Takashi Aoki, Taku Hirashima
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Patent number: 9321285Abstract: 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: GrantFiled: November 11, 2014Date of Patent: April 26, 2016Assignee: Seiko Epson CorporationInventors: Taku Hirashima, Hironori Maekawa
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Patent number: 9290027Abstract: 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: GrantFiled: October 30, 2014Date of Patent: March 22, 2016Assignee: Seiko Epson CorporationInventors: Norio Nagata, Hironori Maekawa, Takashi Aoki, Taku Hirashima
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Patent number: 9272551Abstract: 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: GrantFiled: March 11, 2015Date of Patent: March 1, 2016Assignee: Seiko Epson CorporationInventors: Fumiya Takino, Taku Hirashima
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Publication number: 20150273907Abstract: 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: ApplicationFiled: March 11, 2015Publication date: October 1, 2015Inventors: Fumiya TAKINO, Taku HIRASHIMA
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Publication number: 20150197105Abstract: 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: ApplicationFiled: November 11, 2014Publication date: July 16, 2015Inventors: Taku Hirashima, Hironori Maekawa
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Publication number: 20150116424Abstract: 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: ApplicationFiled: October 30, 2014Publication date: April 30, 2015Applicant: Seiko Epson CorporationInventors: Norio Nagata, Hironori Maekawa, Takashi Aoki, Taku Hirashima
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Patent number: D802658Type: GrantFiled: February 3, 2016Date of Patent: November 14, 2017Assignee: SEIKO EPSON CORPORATIONInventors: Fumiya Takino, Taku Hirashima