Patents by Inventor Tomoyuki Tenkawa
Tomoyuki Tenkawa 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: 20240212193Abstract: An image processing apparatus is provided. First position estimation is performed to detect one or more parts of a first type in an image. A distance between each of the one or more parts of the first type and a part of a second type in the image is estimated. From among the one or more parts of the first type detected, one part of the first type is selected based on the distance estimated for each of the parts of the first type. Information indicating the part selected is output.Type: ApplicationFiled: December 22, 2023Publication date: June 27, 2024Inventors: Tomoyuki TENKAWA, Yuichi KAGEYAMA, Tomoki TAMINATO
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Publication number: 20230065506Abstract: An image processing apparatus comprises: an image input unit configured to input an image; a detection unit configured to detect an object from the image; an accepting unit configured to accept an input of a locus to the image, a selection unit configured to select, based on a locus region decided by the locus, at least two objects included in a plurality of objects detected by the detection unit; and an integration unit configured to generate an integration region that integrates at least two regions in the image corresponding to the at least two objects selected by the selection unit and set the integration region as a region of interest in the image.Type: ApplicationFiled: August 29, 2022Publication date: March 2, 2023Inventors: Tomoyuki Tenkawa, Kotaro Yano, Kenshi Saito
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Patent number: 10484576Abstract: Recording data for recording an achromatic color image having a high lightness is generated as follows. A first color material and a second color material which has a hue complementary to that of the first color material are used to record the image. Recording data is generated such that a recording amount of the first color material and a recording amount of the second color material are larger than a recording amount of another color material, and such that a pixel where it is determined that the first color material is to be recorded and a pixel where it is determined that the second color material is to be recorded are at positions different from each other.Type: GrantFiled: August 3, 2018Date of Patent: November 19, 2019Assignee: CANON KABUSHIKI KAISHAInventors: Fumiko Suzuki, Mayuko Yamagata, Hirokazu Tanaka, Tsukasa Doi, Tomoyuki Tenkawa
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Patent number: 10427411Abstract: An ink-jet printing apparatus includes a print head having a first discharge port and a second discharge port, a cap, a suction unit connected to the cap for sucking ink from the print head, and a determining unit which determines one to be performed by the print head between a first printing operation using the first and second discharge ports and a second printing operation using the first discharge port only, wherein before the first printing operation, the suction unit is controlled to perform first and second suction operations sucking at different strengths. A storing unit further provided therein stores history information indicating the past performance of that the first printing operation. Before the second printing operation, the suction unit is controlled to perform the first suction operation only and, based on the history information after the printing operation, perform the second suction operation.Type: GrantFiled: December 20, 2018Date of Patent: October 1, 2019Assignee: Canon Kabushiki KaishaInventors: Kei Kosaka, Tomoyuki Tenkawa, Monta Matsui, Satoko Yaita
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Patent number: 10286649Abstract: An inkjet recording apparatus includes a recording head including a first discharge port configured to discharge a first amount of ink droplets and a second discharge port configured to discharge a second amount of ink droplets smaller than the first amount, a cap, a suction unit, and a determination unit configured to determine whether to perform a first recording operation by using the first and second discharge ports or a second recording operation by only using the first discharge port. If the first recording operation is determined to be performed, the suction unit performs a first suction operation with a first strength and a second suction operation with a second strength higher than the first strength. If the second recording operation is determined to be performed, the suction unit is controlled not to perform the second suction operation and to perform the first suction operation.Type: GrantFiled: July 25, 2017Date of Patent: May 14, 2019Assignee: Canon Kabushiki KaishaInventors: Satoko Furuyama, Kei Kosaka, Tomoyuki Tenkawa, Monta Matsui
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Publication number: 20190118536Abstract: An ink-jet printing apparatus includes a print head having a first discharge port and a second discharge port, a cap, a suction unit connected to the cap for sucking ink from the print head, and a determining unit which determines one to be performed by the print head between a first printing operation using the first and second discharge ports and a second printing operation using the first discharge port only, wherein before the first printing operation, the suction unit is controlled to perform first and second suction operations sucking at different strengths. A storing unit further provided therein stores history information indicating the past performance of that the first printing operation. Before the second printing operation, the suction unit is controlled to perform the first suction operation only and, based on the history information after the printing operation, perform the second suction operation.Type: ApplicationFiled: December 20, 2018Publication date: April 25, 2019Inventors: Kei Kosaka, Tomoyuki Tenkawa, Monta Matsui, Satoko Yaita
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Patent number: 10207506Abstract: There is provided an inkjet printing apparatus that can execute a recovery process appropriate for a print head according to a use condition of the inkjet printing apparatus. Therefore a recovery operation is performed based upon both an elapsed time in a non-use state where the printing is not performed and an elapsed time from the previous recovery process.Type: GrantFiled: August 18, 2015Date of Patent: February 19, 2019Assignee: Canon Kabushiki KaishaInventors: Osamu Iwasaki, Tomoyuki Tenkawa, Atsushi Takahashi, Kei Kosaka
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Publication number: 20190052775Abstract: Recording data for recording an achromatic color image having a high lightness is generated as follows. A first color material and a second color material which has a hue complementary to that of the first color material are used to record the image. Recording data is generated such that a recording amount of the first color material and a recording amount of the second color material are larger than a recording amount of another color material, and such that a pixel where it is determined that the first color material is to be recorded and a pixel where it is determined that the second color material is to be recorded are at positions different from each other.Type: ApplicationFiled: August 3, 2018Publication date: February 14, 2019Inventors: Fumiko Suzuki, Mayuko Yamagata, Hirokazu Tanaka, Tsukasa Doi, Tomoyuki Tenkawa
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Patent number: 10201977Abstract: An ink-jet printing apparatus includes a print head having a first discharge port and a second discharge port, a cap, a suction unit connected to the cap for sucking ink from the print head, and a determining unit which determines one to be performed by the print head between a first printing operation using the first and second discharge ports and a second printing operation using the first discharge port only, wherein before the first printing operation, the suction unit is controlled to perform first and second suction operations sucking at different strengths. A storing unit further provided therein stores history information indicating the past performance of that the first printing operation. Before the second printing operation, the suction unit is controlled to perform the first suction operation only and, based on the history information after the printing operation, perform the second suction operation.Type: GrantFiled: July 25, 2017Date of Patent: February 12, 2019Assignee: Canon Kabushiki KaishaInventors: Kei Kosaka, Tomoyuki Tenkawa, Monta Matsui, Satoko Furuyama
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Publication number: 20180029356Abstract: An inkjet recording apparatus includes a recording head including a first discharge port configured to discharge a first amount of ink droplets and a second discharge port configured to discharge a second amount of ink droplets smaller than the first amount, a cap, a suction unit, and a determination unit configured to determine whether to perform a first recording operation by using the first and second discharge ports or a second recording operation by only using the first discharge port. If the first recording operation is determined to be performed, the suction unit performs a first suction operation with a first strength and a second suction operation with a second strength higher than the first strength. If the second recording operation is determined to be performed, the suction unit is controlled not to perform the second suction operation and to perform the first suction operation.Type: ApplicationFiled: July 25, 2017Publication date: February 1, 2018Inventors: Satoko Furuyama, Kei Kosaka, Tomoyuki Tenkawa, Monta Matsui
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Publication number: 20180029371Abstract: An ink-jet printing apparatus includes a print head having a first discharge port and a second discharge port, a cap, a suction unit connected to the cap for sucking ink from the print head, and a determining unit which determines one to be performed by the print head between a first printing operation using the first and second discharge ports and a second printing operation using the first discharge port only, wherein before the first printing operation, the suction unit is controlled to perform first and second suction operations sucking at different strengths. A storing unit further provided therein stores history information indicating the past performance of that the first printing operation. Before the second printing operation, the suction unit is controlled to perform the first suction operation only and, based on the history information after the printing operation, perform the second suction operation.Type: ApplicationFiled: July 25, 2017Publication date: February 1, 2018Inventors: Kei Kosaka, Tomoyuki Tenkawa, Monta Matsui, Satoko Furuyama
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Patent number: 9630409Abstract: A liquid discharge head includes a print element substrate provided with discharge ports, through which liquid is discharged; and a support member having a liquid chamber, which is provided with a communicating opening that communicates with the discharge ports, wherein the liquid chamber has a first surface provided with the communicating opening, and a second surface facing the first surface, the second surface is provided with a buffer chamber, which is a hollow space for storing gas, and the buffer chamber has, in the second surface, an opening having a projecting portion projecting toward the inner side of the opening.Type: GrantFiled: July 20, 2016Date of Patent: April 25, 2017Assignee: Canon Kabushiki KaishaInventors: Yoshihiro Hamada, Masaki Oikawa, Hiroshi Yamada, Atsushi Omura, Takuma Kodoi, Tomotsugu Kuroda, Tomoyuki Tenkawa, Monta Matsui
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Patent number: 9597888Abstract: An inkjet printing apparatus performing a printing operation using a main tank for storing ink and a sub tank for storing the ink supplied from the main tank to supply the ink to the print head includes a detection unit for detecting the ink amount in the sub tank and an ink filling unit for driving a driving unit for supplying ink from the main tank to the sub tank to subject the sub tank to an ink filling operation. The ink filling unit is configured, when the ink amount detected by the detection unit is determined to be equal to or lower than the first predetermined amount, the second ink filling operation is performed. The second ink filling operation performs a driving longer than the drive time of the driving unit in the first ink filling operation performed when the main tank is attached to the inkjet printing apparatus.Type: GrantFiled: August 18, 2015Date of Patent: March 21, 2017Assignee: Canon Kabushiki KaishaInventors: Atsushi Takahashi, Kei Kosaka, Tomoyuki Tenkawa, Naozumi Nabeshima
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Publication number: 20170021621Abstract: A liquid discharge head includes a print element substrate provided with discharge ports, through which liquid is discharged; and a support member having a liquid chamber, which is provided with a communicating opening that communicates with the discharge ports, wherein the liquid chamber has a first surface provided with the communicating opening, and a second surface facing the first surface, the second surface is provided with a buffer chamber, which is a hollow space for storing gas, and the buffer chamber has, in the second surface, an opening having a projecting portion projecting toward the inner side of the opening.Type: ApplicationFiled: July 20, 2016Publication date: January 26, 2017Inventors: Yoshihiro Hamada, Masaki Oikawa, Hiroshi Yamada, Atsushi Omura, Takuma Kodoi, Tomotsugu Kuroda, Tomoyuki Tenkawa, Monta Matsui
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Patent number: 9517628Abstract: A printing apparatus comprises an ink tank containing ink, a sub-tank containing the ink supplied from the ink tank, a printhead discharging the ink supplied from the sub-tank, a detection unit configured to perform a detection operation of detecting an ink remaining amount of the sub-tank, a suction unit configured to perform a suction operation of sucking the ink from the printhead, and a control unit configured to stop the suction unit from performing the suction operation when the detection unit detects that the ink remaining amount becomes smaller than a predetermined residual amount during execution of the suction operation.Type: GrantFiled: July 31, 2015Date of Patent: December 13, 2016Assignee: CANON KABUSHIKI KAISHAInventors: Tomoyuki Tenkawa, Atsushi Takahashi, Kei Kosaka
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Patent number: 9446595Abstract: There is provided an ink jet printing apparatus that does not give poor usability to users and a method for controlling the same. To achieve this, in recovery processing performed multiple times to recover an ejection state, in a case where a printing instruction is inputted, the recovery processing is suspended in an amount smaller than an amount required for recovery, depending on an amount of ink in an ink tank.Type: GrantFiled: August 18, 2015Date of Patent: September 20, 2016Assignee: CANON KABUSHIKI KAISHAInventors: Kei Takarabe, Akiyoshi Sahara, Toshiyuki Kuroda, Atsushi Takahashi, Kei Kosaka, Tomoyuki Tenkawa
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Patent number: 9387679Abstract: An ink jet recording method for recording an image onto a recording medium by ejecting an aqueous ink containing a resin from an ejection orifice through use of an ink jet recording apparatus including a recording head having a water-repellent face subjected to water-repellent treatment as an ejection orifice face provided with an ejection orifice; a wiping unit configured to wipe the water-repellent face; and a heating unit configured to heat the water-repellent face, the ink jet recording method including a heating step of wiping the water-repellent face with the wiping unit after heating the water-repellent face with the heating unit and continuously heating the water-repellent face until after the wiping of the water-repellent face.Type: GrantFiled: December 12, 2014Date of Patent: July 12, 2016Assignee: CANON KABUSHIKI KAISHAInventors: Kenichi Shiiba, Masashi Ogasawara, Daiji Okamura, Kousuke Yamasaki, Atsushi Takahashi, Tomoyuki Tenkawa
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Patent number: 9272522Abstract: A printing apparatus includes a main tank for containing ink; a sub tank for containing ink supplied from the main tank and containing ink to be supplied to a print head; a detection unit configured to detect an ink amount in the sub tank; and a filling unit configured to perform ink filling operation that fills the sub tank with ink from the main tank by driving a driving unit, in a case where the detection unit detects the ink amount in the sub tank that is less than a first predetermined amount, wherein in a case where the ink amount in the main tank is less than a second predetermined amount, the filling unit drives the driving unit at smaller drive amount than that in a case where the ink amount in the main tank is greater than the second predetermined amount.Type: GrantFiled: August 18, 2015Date of Patent: March 1, 2016Assignee: CANON KABUSHIKI KAISHAInventors: Kei Kosaka, Atsushi Takahashi, Tomoyuki Tenkawa, Akiyoshi Sahara, Toshiyuki Kuroda, Kei Takarabe
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Publication number: 20160052266Abstract: There is provided an ink jet printing apparatus that does not give poor usability to users and a method for controlling the same. To achieve this, in recovery processing performed multiple times to recover an ejection state, in a case where a printing instruction is inputted, the recovery processing is suspended in an amount smaller than an amount required for recovery, depending on an amount of ink in an ink tank.Type: ApplicationFiled: August 18, 2015Publication date: February 25, 2016Inventors: Kei Takarabe, Akiyoshi Sahara, Toshiyuki Kuroda, Atsushi Takahashi, Kei Kosaka, Tomoyuki Tenkawa
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Publication number: 20160052289Abstract: A printing apparatus includes a main tank for containing ink; a sub tank for containing ink supplied from the main tank and containing ink to be supplied to a print head; a detection unit configured to detect an ink amount in the sub tank; and a filling unit configured to perform ink filling operation that fills the sub tank with ink from the main tank by driving a driving unit, in a case where the detection unit detects the ink amount in the sub tank that is less than a first predetermined amount, wherein in a case where the ink amount in the main tank is less than a second predetermined amount, the filling unit drives the driving unit at smaller drive amount than that in a case where the ink amount in the main tank is greater than the second predetermined amount.Type: ApplicationFiled: August 18, 2015Publication date: February 25, 2016Inventors: Kei Kosaka, Atsushi Takahashi, Tomoyuki Tenkawa, Akiyoshi Sahara, Toshiyuki Kuroda, Kei Takarabe