Patents by Inventor Yosaku Tamura
Yosaku Tamura 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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Publication number: 20230321981Abstract: A transportation portion includes an apparatus body, a cover, first and second path formation portions, and a movement portion. The apparatus body has a transportation path including a downward path and an upward path having portions located at the same level in the Z direction. The cover covers and uncovers the transportation path. The first path formation portion is movable to a first position and to a second position. The second path formation portion defines the upward path and defines the downward path with the first path formation portion. The movement portion moves the first path formation portion in response to opening or closing of the cover. The first path formation portion is positioned in a movement area during a closed state. The movement portion moves the first path formation portion to the second position when the cover is opened and to the first position when the cover is closed.Type: ApplicationFiled: June 15, 2023Publication date: October 12, 2023Inventors: Akinobu NAKAHATA, Soichiro KII, Atsushi MUKAIDA, Yosaku TAMURA
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Patent number: 11766743Abstract: A frame as a multi-layer steel plate is a multi-layer steel plate including a plurality of steel plates being stacked, outer peripheries of which have a plurality of sides, in which positions of the plurality of sides of the plurality of steel plates include portions located at identical positions in plan view, the plurality of steel plates are fixed to each other by welding at the plurality of sides located at the identical positions in plan view, and among the plurality of steel plates, at least one of the steel plates is processed into a shape different from a shape of other steel plates.Type: GrantFiled: December 16, 2019Date of Patent: September 26, 2023Assignee: Seiko Epson CorporationInventor: Yosaku Tamura
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Patent number: 11724504Abstract: A transportation portion includes an apparatus body, a cover, first and second path formation portions, and a movement portion. The apparatus body has a transportation path including a downward path and an upward path having portions located at the same level in the Z direction. The cover covers and uncovers the transportation path. The first path formation portion is movable to a first position and to a second position. The second path formation portion defines the upward path and defines the downward path with the first path formation portion. The movement portion moves the first path formation portion in response to opening or closing of the cover. The first path formation portion is positioned in a movement area during a closed state. The movement portion moves the first path formation portion to the second position when the cover is opened and to the first position when the cover is closed.Type: GrantFiled: December 20, 2021Date of Patent: August 15, 2023Assignee: Seiko Epson CorporationInventors: Akinobu Nakahata, Soichiro Kii, Atsushi Mukaida, Yosaku Tamura
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Patent number: 11724527Abstract: A toothed roller includes: a wheel having teeth on a peripheral surface; and holders that hold n wheels, which satisfy condition 1 and condition 2 described below, such that the n wheels are stacked in an axial direction, n being a natural number of 2 or more. Condition 1 is Pr=Pt/n, where Pr is a tooth pitch of the toothed roller and Pt is a tooth pitch of the wheel. Condition 2 is such that a minimum value of sums of angles each formed by a reference tooth and another reference tooth adjacent thereto in a circumferential direction of one to n wheels is greater than 180 degrees, where one of the teeth is a reference tooth, one of the n wheels is a reference wheel, and wheels having reference teeth near to the reference tooth of the reference wheel are second to nth wheels sequentially.Type: GrantFiled: November 24, 2021Date of Patent: August 15, 2023Assignee: SEIKO EPSON CORPORATIONInventor: Yosaku Tamura
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Publication number: 20220194725Abstract: A transport section includes a first roller, a second roller, a first rotating shaft, a second rotating shaft, a support unit, a main body, a door, and a third rotating shaft. The second roller nips a paper sheet together with the first roller. The first rotating shaft rotatably supports the first roller; the second rotating shaft rotatably supports the second roller. The support unit supports the first rotating shaft; the main body supports the support unit. The third rotating shaft allows the door to rotate. When the door is opened, the support unit moves the first rotating shaft to an escaped point. The escaped point of the first rotating shaft is further from the first roller positioned at the nip point than the nip point.Type: ApplicationFiled: December 20, 2021Publication date: June 23, 2022Inventor: Yosaku Tamura
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Publication number: 20220194084Abstract: A transportation portion includes an apparatus body, a cover, first and second path formation portions, and a movement portion. The apparatus body has a transportation path including a downward path and an upward path having portions located at the same level in the Z direction. The cover covers and uncovers the transportation path. The first path formation portion is movable to a first position and to a second position. The second path formation portion defines the upward path and defines the downward path with the first path formation portion. The movement portion moves the first path formation portion in response to opening or closing of the cover. The first path formation portion is positioned in a movement area during a closed state. The movement portion moves the first path formation portion to the second position when the cover is opened and to the first position when the cover is closed.Type: ApplicationFiled: December 20, 2021Publication date: June 23, 2022Inventors: Akinobu NAKAHATA, Soichiro KII, Atsushi MUKAIDA, Yosaku TAMURA
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Publication number: 20220161576Abstract: A toothed roller includes: a wheel having teeth on a peripheral surface; and holders that hold n wheels, which satisfy condition 1 and condition 2 described below, such that the n wheels are stacked in an axial direction, n being a natural number of 2 or more. Condition 1 is Pr=Pt/n, where Pr is a tooth pitch of the toothed roller and Pt is a tooth pitch of the wheel. Condition 2 is such that a minimum value of sums of angles each formed by a reference tooth and another reference tooth adjacent thereto in a circumferential direction of one to n wheels is greater than 180 degrees, where one of the teeth is a reference tooth, one of the n wheels is a reference wheel, and wheels having reference teeth near to the reference tooth of the reference wheel are second to nth wheels sequentially.Type: ApplicationFiled: November 24, 2021Publication date: May 26, 2022Inventor: Yosaku TAMURA
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Publication number: 20200189034Abstract: A frame as a multi-layer steel plate is a multi-layer steel plate including a plurality of steel plates being stacked, outer peripheries of which have a plurality of sides, in which positions of the plurality of sides of the plurality of steel plates include portions located at identical positions in plan view, the plurality of steel plates are fixed to each other by welding at the plurality of sides located at the identical positions in plan view, and among the plurality of steel plates, at least one of the steel plates is processed into a shape different from a shape of other steel plates.Type: ApplicationFiled: December 16, 2019Publication date: June 18, 2020Inventor: Yosaku TAMURA
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Patent number: 10406835Abstract: A transport roller for a printing apparatus transports a medium. The transport roller includes a shaft that extends in a direction intersecting a transport direction of the medium, and a wheel group in which a plurality of toothed wheels arrayed in the direction in which the shaft extends are held by holders. The toothed wheel includes non-formation portions having no teeth. The non-formation portions of the plurality of toothed wheels of the wheel group are arranged with an interval therebetween in a circumferential direction of the toothed wheels. The non-formation portions are cut portions that are formed when the toothed wheel is cut off from a base. The teeth other than the teeth adjacent to the cut portions are arranged away from each other at regular intervals in a circumferential direction of the wheel group.Type: GrantFiled: July 2, 2018Date of Patent: September 10, 2019Assignee: Seiko Epson CorporationInventors: Yosaku Tamura, Akinobu Nakahata, Teppei Sugeta
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Patent number: 10384477Abstract: A transport roller, adapted to be used in a transport apparatus that transports a medium, includes a shaft, and a wheel group. The wheel group includes a plurality of toothed wheels arrayed in a direction in which the shaft extends, the plurality of toothed wheels being held by a holder which is held by the shaft. A plurality of teeth portions are provided on a peripheral surface of the wheel group, the plurality of teeth portions being disposed to be shifted in position from each other in a circumferential direction of the wheel group when the wheel group is viewed from the direction in which the shaft extends.Type: GrantFiled: June 21, 2018Date of Patent: August 20, 2019Assignee: Seiko Epson CorporationInventors: Akinobu Nakahata, Takamasa Ikagawa, Hiroki Chino, Yosaku Tamura
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Patent number: 10350916Abstract: A printing apparatus includes a print section, a supply path, a correction roller pair, an adjusting mechanism and a controller. The print section is configured to perform printing on a medium. The supply path is configured to supply the medium to the print section. The correction roller pair is configured to enable the medium transported on the supply path to strike the correction roller pair to correct skewing of the medium. The adjusting mechanism adjusts a nip load applied to the correction roller pair. The controller is configured to control the adjusting mechanism based on print job information. The correction roller pair includes a driving roller that has a plurality of convex portions disposed on a peripheral surface along a circumferential direction of the driving roller and a driven roller that is disposed to face the driving roller to be driven by the driving roller.Type: GrantFiled: May 31, 2018Date of Patent: July 16, 2019Assignee: Seiko Epson CorporationInventors: Yosaku Tamura, Akinobu Nakahata
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Patent number: 10343427Abstract: A recording apparatus which suppresses banding which occurs on a recording surface of a medium.Type: GrantFiled: January 2, 2018Date of Patent: July 9, 2019Assignee: Seiko Epson CorporationInventors: Kazunori Mori, Yosaku Tamura
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Publication number: 20180319182Abstract: A transport roller for a printing apparatus transports a medium. The transport roller includes a shaft that extends in a direction intersecting a transport direction of the medium, and a wheel group in which a plurality of toothed wheels arrayed in the direction in which the shaft extends are held by holders. The toothed wheel includes non-formation portions having no teeth. The non-formation portions of the plurality of toothed wheels of the wheel group are arranged with an interval therebetween in a circumferential direction of the toothed wheels. The non-formation portions are cut portions that are formed when the toothed wheel is cut off from a base. The teeth other than the teeth adjacent to the cut portions are arranged away from each other at regular intervals in a circumferential direction of the wheel group.Type: ApplicationFiled: July 2, 2018Publication date: November 8, 2018Inventors: Yosaku Tamura, Akinobu Nakahata, Teppei SUGETA
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Publication number: 20180297379Abstract: A transport roller, adapted to be used in a transport apparatus that transports a medium, includes a shaft, and a wheel group. The wheel group includes a plurality of toothed wheels arrayed in a direction in which the shaft extends, the plurality of toothed wheels being held by a holder which is held by the shaft. A plurality of teeth portions are provided on a peripheral surface of the wheel group, the plurality of teeth portions being disposed to be shifted in position from each other in a circumferential direction of the wheel group when the wheel group is viewed from the direction in which the shaft extends.Type: ApplicationFiled: June 21, 2018Publication date: October 18, 2018Inventors: Akinobu NAKAHATA, Takamasa IKAGAWA, Hiroki CHINO, Yosaku TAMURA
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Publication number: 20180272764Abstract: A printing apparatus includes a print section, a supply path, a correction roller pair, an adjusting mechanism and a controller. The print section is configured to perform printing on a medium. The supply path is configured to supply the medium to the print section. The correction roller pair is configured to enable the medium transported on the supply path to strike the correction roller pair to correct skewing of the medium. The adjusting mechanism adjusts a nip load applied to the correction roller pair. The controller is configured to control the adjusting mechanism based on print job information. The correction roller pair includes a driving roller that has a plurality of convex portions disposed on a peripheral surface along a circumferential direction of the driving roller and a driven roller that is disposed to face the driving roller to be driven by the driving roller.Type: ApplicationFiled: May 31, 2018Publication date: September 27, 2018Inventors: Yosaku TAMURA, Akinobu NAKAHATA
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Patent number: 10040301Abstract: A correction driving roller of a printing apparatus, which is used for transporting a paper sheet, includes at least one toothed roller that includes a plurality of wheels configured to be brought into contact with the paper sheet when the paper sheet is transported, and holders that hold the wheels, and is constructed such that the plurality of wheels are fixed to the holders while being arrayed in an axial direction orthogonal to the side surfaces of the wheels. Cut portions are formed on the wheel and are spaced away from each other when the toothed roller is viewed in the axial direction.Type: GrantFiled: March 2, 2017Date of Patent: August 7, 2018Assignee: Seiko Epson CorporationInventors: Yosaku Tamura, Akinobu Nakahata, Teppei Sugeta
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Publication number: 20180207961Abstract: A recording apparatus which suppresses banding which occurs on a recording surface of a medium.Type: ApplicationFiled: January 2, 2018Publication date: July 26, 2018Inventors: Kazunori Mori, Yosaku Tamura
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Patent number: 10029489Abstract: A printing apparatus includes a printing unit that prints an image on a sheet by using ink, a feed path along which the sheet is transported toward the printing unit, a switchback mechanism that, when two sides of the sheet are to be printed, switches back the sheet of which one of the two sides has been printed and sends the sheet to the feed path, and a correction roller pair capable of correcting skew of the sheet by having firm contact with the sheet transported along the feed path.Type: GrantFiled: October 21, 2016Date of Patent: July 24, 2018Assignee: Seiko Epson CorporationInventors: Akinobu Nakahata, Takamasa Ikagawa, Hiroki Chino, Yosaku Tamura
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Patent number: 10011131Abstract: A printing apparatus includes a print section to perform printing on a medium, a supply path to supply the medium to the print section, a correction roller pair to enable the medium transported on the supply path to strike the correction roller pair to correct skewing of the medium, an adjusting mechanism for adjusting a nip load applied to the correction roller pair, and a controller to control the adjusting mechanism based on print job information.Type: GrantFiled: March 1, 2017Date of Patent: July 3, 2018Assignee: Seiko Epson CorporationInventors: Yosaku Tamura, Akinobu Nakahata
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Publication number: 20170259592Abstract: A correction driving roller of a printing apparatus, which is used for transporting a paper sheet, includes at least one toothed roller that includes a plurality of wheels configured to be brought into contact with the paper sheet when the paper sheet is transported, and holders that hold the wheels, and is constructed such that the plurality of wheels are fixed to the holders while being arrayed in an axial direction orthogonal to the side surfaces of the wheels. Cut portions are formed on the wheel and are spaced away from each other when the toothed roller is viewed in the axial direction.Type: ApplicationFiled: March 2, 2017Publication date: September 14, 2017Inventors: Yosaku TAMURA, Akinobu NAKAHATA, Teppei SUGETA