Patents by Inventor Ryota Kashu
Ryota Kashu 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: 20240137645Abstract: The control method includes determining whether a plurality of pupils can be included in a specific depth in a case where pupil information about the plurality of pupils of a same subject is acquired, and in a case where it is determined in the determining that the plurality of pupils of the same subject cannot be included in the specific depth, control is performed so that different indexes are displayed on a pupil within the specific depth and a pupil outside the specific depth.Type: ApplicationFiled: September 26, 2023Publication date: April 25, 2024Inventor: RYOTA KASHU
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Patent number: 11823428Abstract: An apparatus comprises a storage device configured to store a plurality of dictionary data for respectively detecting a plurality of different objects from an image; and at least one processor configured to function as: a detection unit configured to use partial dictionary data of the plurality of dictionary data to detect an object corresponding to the partial dictionary data, with respect to each frame of an image of a plurality of frames obtained by an image capturing device; and a switching unit configured to switch the dictionary data to be used by the detection unit in the plurality of frames, according to a result of the object detection by the detection unit.Type: GrantFiled: February 11, 2021Date of Patent: November 21, 2023Assignee: CANON KABUSHIKI KAISHAInventor: Ryota Kashu
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Publication number: 20210256306Abstract: An apparatus comprises a storage device configured to store a plurality of dictionary data for respectively detecting a plurality of different objects from an image; and at least one processor configured to function as: a detection unit configured to use partial dictionary data of the plurality of dictionary data to detect an object corresponding to the partial dictionary data, with respect to each frame of an image of a plurality of frames obtained by an image capturing device; and a switching unit configured to switch the dictionary data to be used by the detection unit in the plurality of frames, according to a result of the object detection by the detection unit.Type: ApplicationFiled: February 11, 2021Publication date: August 19, 2021Inventor: Ryota Kashu
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Patent number: 9539810Abstract: A liquid discharge head including plural liquid discharge portions each including a discharge port for discharging liquid, plural discharge ports forming a discharge port array; a common liquid supply flow path extending adjacent to the discharge port array on one side of the discharge port array; and a common liquid collection flow path extending adjacent to the discharge port array on the other side of the discharge port array. Each liquid discharge portion includes a pressure chamber having the discharge port, and a piezoelectric element facing the discharge port. The pressure chamber includes an inlet and an outlet end portion respectively connected to the common liquid supply and collection flow paths, and has an elongated shape connecting the inlet and outlet end portions. A plurality of inlet and outlet end portions are respectively arranged along the common liquid supply flow path and the common liquid collection flow path.Type: GrantFiled: August 7, 2015Date of Patent: January 10, 2017Assignee: Canon Kabushiki KaishaInventors: Yasuyuki Tamura, Toru Nakakubo, Yohei Nakamura, Naoto Sasagawa, Toshio Suzuki, Yasuto Kodera, Ryota Kashu
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Publication number: 20160059555Abstract: A liquid discharge head including plural liquid discharge portions each including a discharge port for discharging liquid, plural discharge ports forming a discharge port array; a common liquid supply flow path extending adjacent to the discharge port array on one side of the discharge port array; and a common liquid collection flow path extending adjacent to the discharge port array on the other side of the discharge port array. Each liquid discharge portion includes a pressure chamber having the discharge port, and a piezoelectric element facing the discharge port. The pressure chamber includes an inlet and an outlet end portion respectively connected to the common liquid supply and collection flow paths, and has an elongated shape connecting the inlet and outlet end portions. A plurality of inlet and outlet end portions are respectively arranged along the common liquid supply flow path and the common liquid collection flow path.Type: ApplicationFiled: August 7, 2015Publication date: March 3, 2016Inventors: Yasuyuki TAMURA, Toru Nakakubo, Yohei Nakamura, Naoto Sasagawa, Toshio Suzuki, Yasuto Kodera, Ryota Kashu
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Patent number: 9259923Abstract: A method of driving a liquid ejection head includes preparing a liquid ejection head including first and second flow paths, and a piezoelectric element, a first step of applying a first voltage, which expands the second flow path, to the piezoelectric element while a meniscus of a liquid recessed from an orifice toward the second flow path is formed in a first flow path to move the meniscus to the second flow path, a second step of applying a second voltage, which contracts the second flow path, to the piezoelectric element while the meniscus that moves toward the first flow path is positioned in the second flow path to move the liquid to the first flow path, and a third step of applying a third voltage, which expands the second flow path, to the piezoelectric element to eject the liquid from the orifice after the liquid projects from the orifice.Type: GrantFiled: April 13, 2012Date of Patent: February 16, 2016Assignee: Canon Kabushiki KaishaInventors: Naoto Sasagawa, Koichi Kitakami, Ryota Kashu
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Patent number: 9108425Abstract: A recording apparatus including an ink tank and a recording head having a flow path forming portion that has an ejection orifice plate having plural ink ejection orifices and a liquid chamber provided for each orifice to supply ink to the orifices, and an energy generating element for ejecting ink in the chamber. A surface layer of the flow path forming portion opposes to the outside of the plate. An opening is provided opposing to the orifices in the surface layer. An ink reservoir is provided between the plate and the opening. A circulation flow path communicating with the ink reservoir is provided. The area of the opening is larger than that of the orifice. Both ends of the circulation flow path are respectively connected to inlet and outlet portions connected to the circulation flow path. The inlet and outlet portions and liquid chamber are connected to the ink tank.Type: GrantFiled: June 19, 2014Date of Patent: August 18, 2015Assignee: Canon Kabushiki KaishaInventors: Ryota Kashu, Naoto Sasagawa, Seiichiro Karita, Takatsuna Aoki, Shingo Okushima, Eisuke Nishitani
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Patent number: 8967773Abstract: A liquid ejection head includes a plurality of ejection orifices which eject a liquid, a plurality of pressure chambers which store the liquid ejected from the ejection orifices and eject the liquid from the ejection orifices in accordance with expansion and contraction of an inner wall of the pressure chambers, and a plurality of recess portions which are formed around the pressure chambers, wherein a piezoelectric member is present between at least one of the recess portions and the pressure chambers.Type: GrantFiled: December 7, 2011Date of Patent: March 3, 2015Assignee: Canon Kabushiki KaishaInventors: Toshio Suzuki, Ryota Kashu
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Publication number: 20140359984Abstract: A liquid ejecting device is manufactured by bonding a wiring substrate to a liquid ejection head by means of an adhesive film. The liquid ejection head has a pressure chamber for ejecting liquid and an air chamber disposed adjacent to the pressure chamber with a wall of a piezoelectric body interposed therebetween. A pair of electrodes is provided, one on the wall surface of the pressure chamber and the other on the wall surface of the air chamber so as to sandwich the piezoelectric body wall. The wiring substrate has a connection terminal which is to be electrically connected at least to the electrode on the pressure chamber side at the time of bonding. The liquid ejection head has an opening for introducing liquid into the pressure chamber, while the wiring substrate has a through hole to be aligned with the opening at the time of bonding.Type: ApplicationFiled: May 30, 2014Publication date: December 11, 2014Applicant: CANON KABUSHIKI KAISHAInventors: Ryota KASHU, Toru Nakakubo
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Patent number: 8857953Abstract: A liquid ejection head includes a piezoelectric block body having a plurality of pressure chambers arranged two-dimensionally to face respective ejection ports, a plurality of air chambers arranged adjacently relative to the plurality of pressure chambers, and a plurality of flow channels arranged along the pressure chambers. The pressure chambers are deformed by expansion and contraction of piezoelectric members disposed between the pressure chambers and the air chambers so as to drive the liquid stored therein to flow toward the ejection ports. A connection flow channel is provided at the ejection port side of the piezoelectric block body so as to make each of the pressure chambers communicate with at least one of the flow channels for partial recirculation of the ink.Type: GrantFiled: December 14, 2012Date of Patent: October 14, 2014Assignee: Canon Kabushiki KaishaInventors: Toshio Suzuki, Shinan Wang, Toru Nakakubo, Manabu Sueoka, Tsunenori Soma, Ryota Kashu
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Publication number: 20140300665Abstract: A recording apparatus including an ink tank and a recording head having a flow path forming portion that has an ejection orifice plate having plural ink ejection orifices and a liquid chamber provided for each orifice to supply ink to the orifices, and an energy generating element for ejecting ink in the chamber. A surface layer of the flow path forming portion opposes to the outside of the plate. An opening is provided opposing to the orifices in the surface layer. An ink reservoir is provided between the plate and the opening. A circulation flow path communicating with the ink reservoir is provided. The area of the opening is larger than that of the orifice. Both ends of the circulation flow path are respectively connected to inlet and outlet portions connected to the circulation flow path. The inlet and outlet portions and liquid chamber are connected to the ink tank.Type: ApplicationFiled: June 19, 2014Publication date: October 9, 2014Inventors: Ryota Kashu, Naoto Sasagawa, Seiichiro Karita, Takatsuna Aoki, Shingo Okushima, Eisuke Nishitani
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Patent number: 8807713Abstract: A liquid ejection head includes multiple tubular pressure chambers and a stacked body having first substrates and second substrates stacked alternately, in which the first substrates each have multiple first grooves and multiple second grooves formed therein, and the second substrates each has multiple third grooves formed therein, in which, in the multiple first grooves of each of the first substrates, inner surface electrodes are formed, in which counter electrodes are formed in a face of each of the second substrates, and in which a width W1 of each of the inner surface electrodes, a width W2 of each of the counter electrodes, and a width WP of each of the multiple first grooves satisfy a relation of WP<W2<W1.Type: GrantFiled: June 13, 2013Date of Patent: August 19, 2014Assignee: Canon Kabushiki KaishaInventors: Yohei Nakamura, Toru Nakakubo, Ryota Kashu
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Patent number: 8794746Abstract: A recording apparatus including an ink tank and a recording head having a flow path forming portion that has an ejection orifice plate having plural ink ejection orifices and a liquid chamber provided for each orifice to supply ink to the orifices, and an energy generating element for ejecting ink in the chamber. A surface layer of the flow path forming portion opposes to the outside of the plate. An opening is provided opposing to the orifices in the surface layer. An ink reservoir is provided between the plate and the opening. A circulation flow path communicating with the ink reservoir is provided. The area of the opening is larger than that of the orifice. Both ends of the circulation flow path are respectively connected to inlet and outlet portions connected to the circulation flow path. The inlet and outlet portions and liquid chamber are connected to the ink tank.Type: GrantFiled: July 17, 2013Date of Patent: August 5, 2014Assignee: Canon Kabushiki KaishaInventors: Ryota Kashu, Naoto Sasagawa, Seiichiro Karita, Takatsuna Aoki, Shingo Okushima, Eisuke Nishitani
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Publication number: 20140035978Abstract: A method of driving a liquid ejection head includes preparing a liquid ejection head including first and second flow paths, and a piezoelectric element, a first step of applying a first voltage, which expands the second flow path, to the piezoelectric element while a meniscus of a liquid recessed from an orifice toward the second flow path is formed in a first flow path to move the meniscus to the second flow path, a second step of applying a second voltage, which contracts the second flow path, to the piezoelectric element while the meniscus that moves toward the first flow path is positioned in the second flow path to move the liquid to the first flow path, and a third step of applying a third voltage, which expands the second flow path, to the piezoelectric element to eject the liquid from the orifice after the liquid projects from the orifice.Type: ApplicationFiled: April 13, 2012Publication date: February 6, 2014Applicant: CANON KABUSHIKI KAISHAInventors: Naoto Sasagawa, Koichi Kitakami, Ryota Kashu
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Publication number: 20130342614Abstract: A liquid ejection head includes multiple tubular pressure chambers and a stacked body having first substrates and second substrates stacked alternately, in which the first substrates each have multiple first grooves and multiple second grooves formed therein, and the second substrates each has multiple third grooves formed therein, in which, in the multiple first grooves of each of the first substrates, inner surface electrodes are formed, in which counter electrodes are formed in a face of each of the second substrates, and in which a width W1 of each of the inner surface electrodes, a width W2 of each of the counter electrodes, and a width WP of each of the multiple first grooves satisfy a relation of WP<W2<W1.Type: ApplicationFiled: June 13, 2013Publication date: December 26, 2013Inventors: Yohei Nakamura, Toru Nakakubo, Ryota Kashu
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Publication number: 20130300811Abstract: A recording apparatus including an ink tank and a recording head having a flow path forming portion that has an ejection orifice plate having plural ink ejection orifices and a liquid chamber provided for each orifice to supply ink to the orifices, and an energy generating element for ejecting ink in the chamber. A surface layer of the flow path forming portion opposes to the outside of the plate. An opening is provided opposing to the orifices in the surface layer. An ink reservoir is provided between the plate and the opening. A circulation flow path communicating with the ink reservoir is provided. The area of the opening is larger than that of the orifice. Both ends of the circulation flow path are respectively connected to inlet and outlet portions connected to the circulation flow path. The inlet and outlet portions and liquid chamber are connected to the ink tank.Type: ApplicationFiled: July 17, 2013Publication date: November 14, 2013Inventors: Ryota Kashu, Naoto Sasagawa, Seiichiro Karita, Takatsuna Aoki, Shingo Okushima, Eisuke Nishitani
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Patent number: 8573744Abstract: A continuous type liquid ejection head includes an ejection opening plate formed with ejection openings, from which a pressurized liquid is ejected, and a deforming unit. The ejection opening plate is made of an elastic plate containing a rubber material, at least at portions that are formed with the ejection openings. The deforming unit is arranged adjacent to the ejection opening plate and is configured to deform the elastic plate so that areas of the ejection openings are periodically changed.Type: GrantFiled: July 8, 2011Date of Patent: November 5, 2013Assignee: Canon Kabushiki KaishaInventors: Ryota Kashu, Koichi Kitakami, Akio Saito
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Publication number: 20130242003Abstract: A liquid ejection head includes a plurality of ejection orifices which eject a liquid, a plurality of pressure chambers which store the liquid ejected from the ejection orifices and eject the liquid from the ejection orifices in accordance with expansion and contraction of an inner wall of the pressure chambers, and a plurality of recess portions which are formed around the pressure chambers, wherein a piezoelectric member is present between at least one of the recess portions and the pressure chambers.Type: ApplicationFiled: December 7, 2011Publication date: September 19, 2013Applicant: CANON KABUSHIKI KAISHAInventors: Toshio Suzuki, Ryota Kashu
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Patent number: 8517518Abstract: A recording apparatus including an ink tank and a recording head having a flow path forming portion that has an ejection orifice plate having plural ink ejection orifices and a liquid chamber provided for each orifice to supply ink to the orifices, and an energy generating element for ejecting ink in the chamber. A surface layer of the flow path forming portion opposes to the outside of the plate. An opening is provided opposing to the orifices in the surface layer. An ink reservoir is provided between the plate and the opening. A circulation flow path communicating with the ink reservoir is provided. The area of the opening is larger than that of the orifice. Both ends of the circulation flow path are respectively connected to inlet and outlet portions connected to the circulation flow path. The inlet and outlet portions and liquid chamber are connected to the ink tank.Type: GrantFiled: November 2, 2011Date of Patent: August 27, 2013Assignee: Canon Kabushiki KaishaInventors: Ryota Kashu, Naoto Sasagawa, Seiichiro Karita, Takatsuna Aoki, Shingo Okushima, Eisuke Nishitani
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Publication number: 20120113197Abstract: A recording apparatus including an ink tank and a recording head having a flow path forming portion that has an ejection orifice plate having plural ink ejection orifices and a liquid chamber provided for each orifice to supply ink to the orifices, and an energy generating element for ejecting ink in the chamber. A surface layer of the flow path forming portion opposes to the outside of the plate. An opening is provided opposing to the orifices in the surface layer. An ink reservoir is provided between the plate and the opening. A circulation flow path communicating with the ink reservoir is provided. The area of the opening is larger than that of the orifice. Both ends of the circulation flow path are respectively connected to inlet and outlet portions connected to the circulation flow path. The inlet and outlet portions and liquid chamber are connected to the ink tank.Type: ApplicationFiled: November 2, 2011Publication date: May 10, 2012Applicant: CANON KABUSHIKI KAISHAInventors: Ryota Kashu, Naoto Sasagawa, Seiichiro Karita, Takatsuna Aoki, Shingo Okushima, Eisuke Nishitani