Patents by Inventor Ken Tsuchii
Ken Tsuchii 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: 10286661Abstract: Disclosed is a liquid discharge method of discharging liquid with a liquid discharge head having a heating surface that contacts and heats the liquid and a discharge port that faces the heating surface and discharges the liquid. The method includes heating the liquid through the heating surface to generate a bubble such that the bubble communicates with an atmosphere, thereby discharging the liquid. The liquid that is being discharged from the discharge port includes a trailing portion. The trailing portion moves toward the heating surface in response to a reduction in volume of the bubble and contacts the heating surface. The method further includes heating the trailing portion through the heating surface while the trailing portion is in contact with the heating surface, thereby generating a bubble.Type: GrantFiled: October 24, 2017Date of Patent: May 14, 2019Assignee: Canon Kabushiki KaishaInventors: Shintaro Kasai, Yoshiyuki Nakagawa, Akira Shibasaki, Masataka Sakurai, Ken Tsuchii, Akiko Hammura, Tatsurou Mori, Shinji Kishikawa
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Patent number: 10144217Abstract: Gas is ejected toward a region between a liquid ejection head and a recording medium so as to enlarge and stabilize a vortex generated by an airflow generated by liquid droplets ejected from ejection ports. Accordingly, an airflow turbulence generated between the liquid ejection head and the recording medium is reduced and displacements of positions at which the liquid droplets are applied due to the airflow turbulence are reduced.Type: GrantFiled: March 1, 2016Date of Patent: December 4, 2018Assignee: Canon Kabushiki KaishaInventors: Arihito Miyakoshi, Ken Tsuchii, Nobuhito Yamaguchi, Hiroshi Arimizu, Yumi Komamiya, Koichi Ishida
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Publication number: 20180117913Abstract: Disclosed is a liquid discharge method of discharging liquid with a liquid discharge head having a heating surface that contacts and heats the liquid and a discharge port that faces the heating surface and discharges the liquid. The method includes heating the liquid through the heating surface to generate a bubble such that the bubble communicates with an atmosphere, thereby discharging the liquid. The liquid that is being discharged from the discharge port includes a trailing portion. The trailing portion moves toward the heating surface in response to a reduction in volume of the bubble and contacts the heating surface. The method further includes heating the trailing portion through the heating surface while the trailing portion is in contact with the heating surface, thereby generating a bubble.Type: ApplicationFiled: October 24, 2017Publication date: May 3, 2018Inventors: Shintaro Kasai, Yoshiyuki Nakagawa, Akira Shibasaki, Masataka Sakurai, Ken Tsuchii, Akiko Hammura, Tatsurou Mori, Shinji Kishikawa
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Patent number: 9656474Abstract: Gas is blown at a predetermined speed from a predetermined area on an orifice substrate with reference to the position of an ejection port array.Type: GrantFiled: March 1, 2016Date of Patent: May 23, 2017Assignee: Canon Kabushiki KaishaInventors: Hiroshi Arimizu, Ken Tsuchii, Nobuhito Yamaguchi, Yumi Komamiya, Arihito Miyakoshi, Koichi Ishida
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Patent number: 9597870Abstract: Provided is an inkjet print head in which, without causing an increase in print head size, printing elements that can perform ejection at a high frequency are densely arrayed. For this purpose, an ink supplying port and a wiring line, which are common to a predetermined number of printing elements, are prepared, and a substrate on which the ink supplying ports and the wiring lines are alternately arranged at the same pitches as an array pitch of the printing elements is also prepared.Type: GrantFiled: November 8, 2012Date of Patent: March 21, 2017Assignee: Canon Kabushiki KaishaInventors: Masataka Sakurai, Ken Tsuchii
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Patent number: 9457593Abstract: A liquid ejecting head ejects liquid from a plurality of ejection orifices thereof for recording while being moved relative to a recording medium. The liquid ejecting head includes a gas discharge port configured to allow gas to be discharged therefrom. The gas discharge port is disposed on a downstream side of the ejection orifices in a direction of relative movement of the recording medium as viewed from the liquid ejecting head. The gas discharged from the gas discharge port joins an airflow that forms a vortex on an upstream side of the ejection orifices in the direction of relative movement. The vortex is generated by the liquid ejected from the ejection orifices.Type: GrantFiled: February 29, 2016Date of Patent: October 4, 2016Assignee: Canon Kabushiki KaishaInventors: Koichi Ishida, Ken Tsuchii, Nobuhito Yamaguchi, Hiroshi Arimizu, Yumi Komamiya, Arihito Miyakoshi
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Publication number: 20160257139Abstract: A liquid ejecting head ejects liquid from a plurality of ejection orifices thereof for recording while being moved relative to a recording medium. The liquid ejecting head includes a gas discharge port configured to allow gas to be discharged therefrom. The gas discharge port is disposed on a downstream side of the ejection orifices in a direction of relative movement of the recording medium as viewed from the liquid ejecting head. The gas discharged from the gas discharge port joins an airflow that forms a vortex on an upstream side of the ejection orifices in the direction of relative movement. The vortex is generated by the liquid ejected from the ejection orifices.Type: ApplicationFiled: February 29, 2016Publication date: September 8, 2016Inventors: Koichi Ishida, Ken Tsuchii, Nobuhito Yamaguchi, Hiroshi Arimizu, Yumi Komamiya, Arihito Miyakoshi
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Publication number: 20160257127Abstract: Gas is blown at a predetermined speed from a predetermined area on an orifice substrate with reference to the position of an ejection port array.Type: ApplicationFiled: March 1, 2016Publication date: September 8, 2016Inventors: Hiroshi Arimizu, Ken Tsuchii, Nobuhito Yamaguchi, Yumi Komamiya, Arihito Miyakoshi, Koichi Ishida
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Publication number: 20160257140Abstract: Gas is ejected toward a region between a liquid ejection head and a recording medium so as to enlarge and stabilize a vortex generated by an airflow generated by liquid droplets ejected from ejection ports. Accordingly, an airflow turbulence generated between the liquid ejection head and the recording medium is reduced and displacements of positions at which the liquid droplets are applied due to the airflow turbulence are reduced.Type: ApplicationFiled: March 1, 2016Publication date: September 8, 2016Inventors: Arihito Miyakoshi, Ken Tsuchii, Nobuhito Yamaguchi, Hiroshi Arimizu, Yumi Komamiya, Koichi Ishida
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Patent number: 9168742Abstract: A liquid ejection head includes a substrate including a first supply port row in which a plurality of supply ports are arranged, a first energy generating element row in which a plurality of energy generating elements are arranged, a second supply port row in which a plurality of supply ports are arranged, a second energy generating element row in which a plurality of energy generating elements are arranged, a first wiring layer and a second wiring layer for driving the energy generating elements, and a through hole configured to electrically connect the first wiring layer and the second wiring layer. The first energy generating element row, the first supply port row, the second supply port row, and the second energy generating element row are arranged in parallel in this order and the through hole is arranged between the first supply port row and the second supply port row.Type: GrantFiled: December 2, 2014Date of Patent: October 27, 2015Assignee: Canon Kabushiki KaishaInventors: Masataka Sakurai, Ken Tsuchii
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Patent number: 9096063Abstract: A method of manufacturing a liquid ejection head includes the steps of (1) forming a recess in a second surface of a substrate to form a common supply port, (2) forming an etching mask, which specifies opening positions of independent supply ports, on a bottom surface of the common supply port, and (3) performing ion etching using plasma with the etching mask employed as a mask, thereby forming the independent supply ports. The etching mask has an opening pattern formed therein such that respective distances from an ejection energy generation element to openings of two independent supply ports adjacent to the ejection energy generation element on the first surface side of the substrate are equal to each other.Type: GrantFiled: January 22, 2013Date of Patent: August 4, 2015Assignee: Canon Kabushiki KaishaInventors: Masahiko Kubota, Ken Tsuchii, Masataka Sakurai, Yoshiyuki Nakagawa, Akiko Saito, Shinji Kishikawa, Ryoji Kanri, Atsunori Terasaki, Akihiko Okano, Atsushi Hiramoto
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Patent number: 8991980Abstract: An ink jet print head is configured to reduce the inclination of an ink ejection direction to make improper print conditions such as stripes and density unevenness unnoticeable. An individual wire is extended to lie under a common wire. Thus, wires under ink channels arranged on the respective opposite sides of a pressure chamber are symmetric. Consequently, an equivalent step structure is provided at the bottoms of the ink channels arranged on the respective opposite sides of the pressure chamber.Type: GrantFiled: April 17, 2014Date of Patent: March 31, 2015Assignee: Canon Kabushiki KaishaInventors: Shinji Kishikawa, Ken Tsuchii, Masataka Sakurai, Akiko Saito
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Publication number: 20150085020Abstract: A liquid ejection head includes a substrate including a first supply port row in which a plurality of supply ports are arranged, a first energy generating element row in which a plurality of energy generating elements are arranged, a second supply port row in which a plurality of supply ports are arranged, a second energy generating element row in which a plurality of energy generating elements are arranged, a first wiring layer and a second wiring layer for driving the energy generating elements, and a through hole configured to electrically connect the first wiring layer and the second wiring layer. The first energy generating element row, the first supply port row, the second supply port row, and the second energy generating element row are arranged in parallel in this order and the through hole is arranged between the first supply port row and the second supply port row.Type: ApplicationFiled: December 2, 2014Publication date: March 26, 2015Inventors: Masataka Sakurai, Ken Tsuchii
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Patent number: 8926066Abstract: A liquid ejection head includes a substrate including a first supply port row in which a plurality of supply ports are arranged, a first energy generating element row in which a plurality of energy generating elements are arranged, a second supply port row in which a plurality of supply ports are arranged, a second energy generating element row in which a plurality of energy generating elements are arranged, a first wiring layer and a second wiring layer for driving the energy generating elements, and a through hole configured to electrically connect the first wiring layer and the second wiring layer. The first energy generating element row, the first supply port row, the second supply port row, and the second energy generating element row are arranged in parallel in this order and the through hole is arranged between the first supply port row and the second supply port row.Type: GrantFiled: May 28, 2012Date of Patent: January 6, 2015Assignee: Canon Kabushiki KaishaInventors: Masataka Sakurai, Ken Tsuchii
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Publication number: 20140225961Abstract: An ink jet print head is configured to reduce the inclination of an ink ejection direction to make improper print conditions such as stripes and density unevenness unnoticeable. An individual wire is extended to lie under a common wire. Thus, wires under ink channels arranged on the respective opposite sides of a pressure chamber are symmetric. Consequently, an equivalent step structure is provided at the bottoms of the ink channels arranged on the respective opposite sides of the pressure chamber.Type: ApplicationFiled: April 17, 2014Publication date: August 14, 2014Applicant: CANON KABUSHIKI KAISHAInventors: Shinji KISHIKAWA, Ken Tsuchii, Masataka Sakurai, Akiko Saito
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Patent number: 8783833Abstract: An ink jet print head is provided which can improve throughput by increasing an ink ejection frequency and prevent crosstalk among a plurality of heat application portions, realizing a capability of printing high-quality images at high speed. An opening size of the supply ports in a direction perpendicular to the array direction of the heat application portions is made greater than the length in the direction of electrothermal conversion elements. The supply ports are arranged along the array direction so that they adjoin the heat application portions in the array direction.Type: GrantFiled: November 29, 2012Date of Patent: July 22, 2014Assignee: Canon Kabushiki KaishaInventors: Ken Tsuchii, Masataka Sakurai, Yoshiyuki Nakagawa, Akiko Saito
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Publication number: 20140198158Abstract: A liquid ejection head includes a substrate including a first supply port row in which a plurality of supply ports are arranged, a first energy generating element row in which a plurality of energy generating elements are arranged, a second supply port row in which a plurality of supply ports are arranged, a second energy generating element row in which a plurality of energy generating elements are arranged, a first wiring layer and a second wiring layer for driving the energy generating elements, and a through hole configured to electrically connect the first wiring layer and the second wiring layer. The first energy generating element row, the first supply port row, the second supply port row, and the second energy generating element row are arranged in parallel in this order and the through hole is arranged between the first supply port row and the second supply port row.Type: ApplicationFiled: May 28, 2012Publication date: July 17, 2014Applicant: CANON KABUSHIKI KAISHAInventors: Masataka Sakurai, Ken Tsuchii
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Patent number: 8757771Abstract: The liquid ejection head capable of securing a high performance of supplying liquid through supply ports while reducing the size of the substrate is provided. The liquid ejecting apparatus using such a liquid ejection head are also provided. The third supply ports situated between the first ejection port array and the second ejection port array include a portion of a large dimension and a portion of a small dimension.Type: GrantFiled: April 10, 2012Date of Patent: June 24, 2014Assignee: Canon Kabushiki KaishaInventors: Ken Tsuchii, Masataka Sakurai
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Patent number: 8746847Abstract: An ink jet print head is configured to reduce the inclination of an ink ejection direction to make improper print conditions such as stripes and density unevenness unnoticeable. An individual wire is extended to lie under a common wire. Thus, wires under ink channels arranged on the respective opposite sides of a pressure chamber are symmetric. Consequently, an equivalent step structure is provided at the bottoms of the ink channels arranged on the respective opposite sides of the pressure chamber.Type: GrantFiled: January 8, 2010Date of Patent: June 10, 2014Assignee: Canon Kabushiki KaishaInventors: Shinji Kishikawa, Ken Tsuchii, Masataka Sakurai, Akiko Saito
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Patent number: 8721047Abstract: A liquid ejection head includes a member having a plurality of ejection openings for ejecting liquid, and a substrate having first and second element arrays having plural elements for generating energy used for ejecting liquid, and a supply port array having plural supply ports for supplying liquid to the elements. A wiring for driving the elements, which is connected to the elements of the second element array, passes between the supply ports of the supply port array and extends to a first element array side. A length of each of the supply ports of the supply port array is greater than a length of each of the elements of the first and second element arrays.Type: GrantFiled: July 26, 2013Date of Patent: May 13, 2014Assignee: Canon Kabushiki KaishaInventors: Masataka Sakurai, Ken Tsuchii