Patents by Inventor Yoshitsugu Tokai
Yoshitsugu Tokai 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: 12311654Abstract: A printing apparatus includes a body portion and a carriage configured to move in a first direction along a first axis and in a second direction along a second axis orthogonal to the first axis. The carriage is mounted with a head configured to eject ink toward a medium and an irradiation unit configured to irradiate the medium with ultraviolet rays arranged side by side in the first direction. The irradiation unit includes a first contact portion and is supported movably in the second direction relative to the head. Movement of the carriage in the second direction brings the first contact portion and a second contact portion provided at the body portion into contact with each other. The irradiation unit moves in the second direction relative to the head as the carriage moves while the first contact portion and the second contact portion are in contact with each other.Type: GrantFiled: February 8, 2023Date of Patent: May 27, 2025Assignee: Seiko Epson CorporationInventors: Kazuma Ozaki, Yoshitsugu Tokai
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Patent number: 12269255Abstract: A printing device includes a carriage configured to move in a first direction along a first axis; a head configured to eject ink onto a medium; and an irradiation section that is provided alongside the head in the first direction and that is configured to irradiate ultraviolet light toward the medium, wherein the irradiation section has a cooling unit that cools the irradiation section by airflow, in a plan view facing the medium, the head is disposed in a first region of the carriage and the irradiation section is disposed in a second region of the carriage, and in the second region, at least one lid section is provided to block an airflow from a side in which the carriage faces the medium to the irradiation section.Type: GrantFiled: June 26, 2023Date of Patent: April 8, 2025Assignee: Seiko Epson CorporationInventors: Yuta Watanabe, Yoshitsugu Tokai
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Publication number: 20230415497Abstract: A printing device includes a carriage configured to move in a first direction along a first axis; a head configured to eject ink onto a medium; and an irradiation section that is provided alongside the head in the first direction and that is configured to irradiate ultraviolet light toward the medium, wherein the irradiation section has a cooling unit that cools the irradiation section by airflow, in a plan view facing the medium, the head is disposed in a first region of the carriage and the irradiation section is disposed in a second region of the carriage, and in the second region, at least one lid section is provided to block an airflow from a side in which the carriage faces the medium to the irradiation section.Type: ApplicationFiled: June 26, 2023Publication date: December 28, 2023Inventors: Yuta WATANABE, Yoshitsugu TOKAI
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Publication number: 20230415496Abstract: A printing apparatus includes a carriage and a control unit. The carriage includes a head configured to move in a first direction, and a light emission unit configured to relatively move in a second direction. The light emission unit includes a first emission group and a second emission group arranged in the second direction. The first emission group is disposed at a position that overlaps with the plurality of nozzles in the first direction. The second emission group is disposed at a position that does not overlap with the plurality of nozzles in the first direction. The control unit is configured to perform a first mode in which ultraviolet light is emitted from the first emission group and the second emission group, and a second mode in which ultraviolet light is not emitted from the first emission group and ultraviolet light is emitted from the second emission group.Type: ApplicationFiled: June 21, 2023Publication date: December 28, 2023Inventor: Yoshitsugu TOKAI
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Patent number: 11745518Abstract: A printing apparatus that performs a first control of performing discharge of ultraviolet curable ink from a printing head and irradiation of ultraviolet rays from an ultraviolet irradiation unit while performing a first movement along a main scanning direction and a second movement along a sub scanning direction from a print start position side to a print end position side, and a second control of performing irradiation of ultraviolet rays from the ultraviolet irradiation unit without performing discharge of ultraviolet curable ink from the printing head while performing the first movement and the second movement from the print end position side to the print start position side, and in which a movement speed of the first movement in the second control is faster than a movement speed of the first movement in the first control.Type: GrantFiled: March 7, 2022Date of Patent: September 5, 2023Assignee: Seiko Epson CorporationInventor: Yoshitsugu Tokai
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Publication number: 20230249477Abstract: A printing apparatus includes a body portion and a carriage configured to move in a first direction along a first axis and in a second direction along a second axis orthogonal to the first axis. The carriage is mounted with a head configured to eject ink toward a medium and an irradiation unit configured to irradiate the medium with ultraviolet rays arranged side by side in the first direction. The irradiation unit includes a first contact portion and is supported movably in the second direction relative to the head. Movement of the carriage in the second direction brings the first contact portion and a second contact portion provided at the body portion into contact with each other. The irradiation unit moves in the second direction relative to the head as the carriage moves while the first contact portion and the second contact portion are in contact with each other.Type: ApplicationFiled: February 8, 2023Publication date: August 10, 2023Inventors: Kazuma OZAKI, Yoshitsugu TOKAI
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Publication number: 20220288953Abstract: A printing apparatus that performs a first control of performing discharge of ultraviolet curable ink from a printing head and irradiation of ultraviolet rays from an ultraviolet irradiation unit while performing a first movement along a main scanning direction and a second movement along a sub scanning direction from a print start position side to a print end position side, and a second control of performing irradiation of ultraviolet rays from the ultraviolet irradiation unit without performing discharge of ultraviolet curable ink from the printing head while performing the first movement and the second movement from the print end position side to the print start position side, and in which a movement speed of the first movement in the second control is faster than a movement speed of the first movement in the first control.Type: ApplicationFiled: March 7, 2022Publication date: September 15, 2022Inventor: Yoshitsugu TOKAI
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Patent number: 10407266Abstract: A transport apparatus includes a driving roller that transports a medium in a transport direction, a driven roller that presses the medium against the driving roller when the medium is transported, a changer that changes a pressing force by which the driven roller presses the medium against the driving roller, and a feeder configured to feed the medium toward the driving roller and pull back the medium in a direction opposite to the transport direction. Before the driving roller transports the medium, the feeder pulls back the medium after the changer has changed the pressing force to a value that is smaller than the value of the pressing force set for transport of the medium.Type: GrantFiled: March 11, 2016Date of Patent: September 10, 2019Assignee: Seiko Epson CorporationInventors: Yoshitsugu Tokai, Toru Hayashi, Ryoichi Onishi
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Patent number: 10315443Abstract: A printing device includes a printing apparatus that includes a transport unit including a roller pair that nips and transports a medium, a printing unit that prints on the medium and a first sensor that detects the medium or a mark at a position downstream of the roller pair. The printing device also includes a first motor capable of driving the roller pair to a non-nipping state and to a nipping state, and a controller that controls the transport unit and the first motor so as to perform an assistance operation to assist setting of the medium. The assistance operation performed by the controller. When the first sensor detects the medium or the mark, the controller causes the medium to be nipped by the roller pair, and a skew correction operation in which the medium is transported and reverse transported is performed.Type: GrantFiled: November 28, 2017Date of Patent: June 11, 2019Assignee: Seiko Epson CorporationInventors: Yoshitsugu Tokai, Hiroyuki Kobayashi
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Publication number: 20180345687Abstract: A printing apparatus includes a transport unit that transports a medium in a transport direction by rotating while pinching the medium, a support portion that is disposed on a downstream side of the transport unit in the transport direction and that has a support surface that supports the medium transported by the transport unit, a printing unit that is disposed opposite the support portion and that is capable of printing an image and a mark on the medium, and a detection unit that detects the mark printed on the medium by the printing unit when printing on both surfaces of the medium is performed, where the detection unit is disposed on a downstream side of the transport unit in the transport direction.Type: ApplicationFiled: June 4, 2018Publication date: December 6, 2018Inventors: Yoshitsugu TOKAI, Hiroki AOKI, Takehito WASHIZAWA
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Publication number: 20180154661Abstract: A printing device includes a printing apparatus that includes a transport unit including a roller pair that nips and transports a medium, a printing unit that prints on the medium and a first sensor that detects the medium or a mark at a position downstream of the roller pair. The printing device also includes a first motor capable of driving the roller pair to a non-nipping state and to a nipping state, and a controller that controls the transport unit and the first motor so as to perform an assistance operation to assist setting of the medium. The assistance operation performed by the controller. When the first sensor detects the medium or the mark, the controller causes the medium to be nipped by the roller pair, and a skew correction operation in which the medium is transported and reverse transported is performed.Type: ApplicationFiled: November 28, 2017Publication date: June 7, 2018Inventors: Yoshitsugu TOKAI, Hiroyuki KOBAYASHI
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Patent number: 9914313Abstract: A printing apparatus includes a printing portion for printing on a medium, a driving roller for transporting the medium, a first and a second driven roller which are respectively supported with a gap in one roller shaft in a shaft line direction of the roller shaft and rotate around the roller shaft while pressing the transported medium on the driving roller, and a shaft support member that has a shaft support portion which supports the roller shaft between the first driven roller and the second driven roller. The first and the second driven roller have a through hole into which the roller shaft is inserted and an inner diameter in a roller center portion is smaller than an inner diameter of a roller end portion in the shaft line direction. The roller shaft is supported so as to be swingable with the shaft support portion as a support point.Type: GrantFiled: September 27, 2016Date of Patent: March 13, 2018Assignee: Seiko Epson CorporationInventors: Hiroki Aoki, Yoshitsugu Tokai
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Publication number: 20170087899Abstract: A printing apparatus includes a printing portion for printing on a medium, a driving roller for transporting the medium, a first and a second driven roller which are respectively supported with a gap in one roller shaft in a shaft line direction of the roller shaft and rotate around the roller shaft while pressing the transported medium on the driving roller, and a shaft support member that has a shaft support portion which supports the roller shaft between the first driven roller and the second driven roller. The first and the second driven roller have a through hole into which the roller shaft is inserted and an inner diameter in a roller center portion is smaller than an inner diameter of a roller end portion in the shaft line direction. The roller shaft is supported so as to be swingable with the shaft support portion as a support point.Type: ApplicationFiled: September 27, 2016Publication date: March 30, 2017Inventors: Hiroki AOKI, Yoshitsugu TOKAI
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Publication number: 20160272452Abstract: A transport apparatus includes a driving roller that transports a medium in a transport direction, a driven roller that presses the medium against the driving roller when the medium is transported, a changer that changes a pressing force by which the driven roller presses the medium against the driving roller, and a feeder configured to feed the medium toward the driving roller and pull back the medium in a direction opposite to the transport direction. Before the driving roller transports the medium, the feeder pulls back the medium after the changer has changed the pressing force to a value that is smaller than the value of the pressing force set for transport of the medium.Type: ApplicationFiled: March 11, 2016Publication date: September 22, 2016Inventors: Yoshitsugu Tokai, Toru Hayashi, Ryoichi Onishi
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Publication number: 20150375532Abstract: An ink jet printer which is a recording device which ejects ink droplets onto a recording surface of a recording medium thereby recording, includes a material of slave rollers that are in contact with the recording surface in a transport path through which the recording medium is transported, the material being located on a polarity side opposite to a polarity in which mist that is generated in accordance with ejection of the ink droplets in a charge string is charged, further than a material of a member which configures the recording surface.Type: ApplicationFiled: June 26, 2015Publication date: December 31, 2015Inventors: Yoshitsugu TOKAI, Takuya YASUE, Yusuke SAITO, Hlroaki FUKUMOTO
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Patent number: 9022518Abstract: There is provided a recording apparatus including a support stage which supports a recording medium, a recording processing section which includes a recording unit for performing recording on the supported recording medium and is bridged so as to cross over the support stage in an X-axis direction, a Y-axis moving section which moves the recording processing section in a Y-axis direction with respect to the support stage, and a collision detection section which detects collision between a foreign matter and the recording processing section, in which the recording processing section includes projecting sections projecting in the X-axis direction with respect to the support stage, and side collision detection sections are respectively arranged on front and rear sides of the respective projecting sections.Type: GrantFiled: March 24, 2014Date of Patent: May 5, 2015Assignee: Seiko Epson CorporationInventor: Yoshitsugu Tokai
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Patent number: 8960852Abstract: There is provided a recording apparatus including a support stage which support a recording medium, a recording processing section which includes a recording unit for performing recording on the supported recording medium and is bridged so as to cross over the support stage in an X-axis direction, a Y-axis moving section which moves the recording processing section in a Y-axis direction with respect to the support stage, a rear bumper section which is arranged on the rear side of the recording processing section in the Y-axis direction and absorbs impact from collision with a foreign matter, and a first detection section which detects whether or not a distance between the recording medium A and the recording unit is less than a predetermined value, in which at least a part of the first detection section is arranged inside the rear bumper section.Type: GrantFiled: March 19, 2014Date of Patent: February 24, 2015Assignee: Seiko Epson CorporationInventor: Yoshitsugu Tokai
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Publication number: 20140292876Abstract: There is provided a recording apparatus including a support stage which support a recording medium, a recording processing section which includes a recording unit for performing recording on the supported recording medium and is bridged so as to cross over the support stage in an X-axis direction, a Y-axis moving section which moves the recording processing section in a Y-axis direction with respect to the support stage, a rear bumper section which is arranged on the rear side of the recording processing section in the Y-axis direction and absorbs impact from collision with a foreign matter, and a first detection section which detects whether or not a distance between the recording medium A and the recording unit is less than a predetermined value, in which at least a part of the first detection section is arranged inside the rear bumper section.Type: ApplicationFiled: March 19, 2014Publication date: October 2, 2014Applicant: SEIKO EPSON CORPORATIONInventor: Yoshitsugu TOKAI
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Publication number: 20140292890Abstract: There is provided a recording apparatus including a support stage which supports a recording medium, a recording processing section which includes a recording unit for performing recording on the supported recording medium and is bridged so as to cross over the support stage in an X-axis direction, a Y-axis moving section which moves the recording processing section in a Y-axis direction with respect to the support stage, and a collision detection section which detects collision between a foreign matter and the recording processing section, in which the recording processing section includes projecting sections projecting in the X-axis direction with respect to the support stage, and side collision detection sections are respectively arranged on front and rear sides of the respective projecting sections.Type: ApplicationFiled: March 24, 2014Publication date: October 2, 2014Applicant: SEIKO EPSON CORPORATIONInventor: Yoshitsugu TOKAI
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Patent number: 7954939Abstract: A decurling mechanism for performing a decurling process of correcting the curl of paper includes: a first roller; a second roller disposed travelably around the first roller; and a roller position changing mechanism for changing the second roller to a plurality of positions set on a traveling path of the second roller. The plurality of positions include a decurling position in which the decurling process to the paper is enabled and the paper is conveyed while being pinched between the first and second rollers, a conveyance position in which the decurling process to the paper is disabled and the paper is conveyed while being pinched between the first and second rollers and a pinch release position in which the paper is released from the pinch between the first and second rollers.Type: GrantFiled: January 27, 2009Date of Patent: June 7, 2011Assignee: Noritsu Koki Co., Ltd.Inventors: Akihito Yamamoto, Yoshitsugu Tokai