Patents by Inventor Taku Yokozawa
Taku Yokozawa 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: 20230136284Abstract: A recording apparatus includes a recording unit, a scanning unit configured to perform relative scanning by moving the recording unit and a recording medium relative to each other at least once with respect to a unit region on the recording medium, a recovery unit configured to perform a recovery operation for maintaining or recovering a recording performance of the recording unit for application of a recording material, and a control unit configured to control the recovery unit, wherein the control unit acquires recording mode information about recording of an image to be performed on a recording medium for (n+1)-th page (n being a natural number) and determines, based on the acquired recording mode information, whether to perform an inter-page recovery operation at timing after recording of an image on a recording medium for n-th page ends and before recording of an image on a recording medium for (n+1)-th page starts.Type: ApplicationFiled: December 30, 2022Publication date: May 4, 2023Inventors: Toshimitsu Danzuka, Masataka Kato, Hiroto Kango, Rie Takekoshi, Akihiro Tomida, Tomoki Yamamuro, Keita Ishimi, Kazuki Narumi, Taku Yokozawa, Kazuo Suzuki, Kazuhiko Sato
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Patent number: 11560003Abstract: A recording apparatus includes a recording unit, a scanning unit configured to perform relative scanning by moving the recording unit and a recording medium relative to each other at least once with respect to a unit region on the recording medium, a recovery unit configured to perform a recovery operation for maintaining or recovering a recording performance of the recording unit for application of a recording material, and a control unit configured to control the recovery unit, wherein the control unit acquires recording mode information about recording of an image to be performed on a recording medium for (n+1)-th page (n being a natural number) and determines, based on the acquired recording mode information, whether to perform an inter-page recovery operation at timing after recording of an image on a recording medium for n-th page ends and before recording of an image on a recording medium for (n+1)-th page starts.Type: GrantFiled: July 12, 2021Date of Patent: January 24, 2023Assignee: Canon Kabushiki KaishaInventors: Toshimitsu Danzuka, Masataka Kato, Hiroto Kango, Rie Takekoshi, Akihiro Tomida, Tomoki Yamamuro, Keita Ishimi, Kazuki Narumi, Taku Yokozawa, Kazuo Suzuki, Kazuhiko Sato
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Publication number: 20220134738Abstract: An inkjet printing apparatus includes a print head configured to print an image on a printing medium using a printing element configured to eject ink with thermal energy, a scanning unit configured to cause the print head to scan the printing medium, and a control unit configured to control scanning by the scanning unit and image printing by the print head based on an image printing instruction, wherein the control unit performs a control operation including executing a preliminary ejection to eject, from the print head, ink that does not contribute to image printing before an image is printed in one scanning operation, and determining an amount of ink to be ejected in the preliminary ejection based on a difference between a target temperature and a scanning start temperature, which is a temperature of the print head acquired in response to an instruction to start the one scanning operation.Type: ApplicationFiled: October 27, 2021Publication date: May 5, 2022Inventors: Taku Yokozawa, Kazuhiko Sato, Noboru Kunimine, Takeshi Murase, Hiroshi Taira, Hiroshi Kawafuji, Sae Mogi, Akiko Aichi
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Publication number: 20220080747Abstract: An object is to provide a full-line inkjet printing apparatus and a printing method that can suppress occurrence of image degradation in the case where a conveyance roller conveys a print medium and multipass printing is performed. The maximum conveyance amount in a return route is set to be smaller than a distance between the conveyance roller and a print head.Type: ApplicationFiled: November 29, 2021Publication date: March 17, 2022Inventors: Masataka Kato, Kazuhiko Sato, Kazuo Suzuki, Yoshinori Nakajima, Mitsutoshi Nagamura, Shin Genta, Satoshi Azuma, Shingo Nishioka, Sae Mogi, Taku Yokozawa, Noboru Kunimine, Akiko Aichi, Hiroshi Taira, Hiroto Kango, Hiroshi Kawafuji
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Publication number: 20220080754Abstract: To provide a technology capable of appropriately suppressing deterioration in cutting accuracy of a slitter although the rigidity of a print medium changes, a printing apparatus is equipped with: a first conveyance unit configured to convey a print medium; a printing unit configured to print an image by applying ink to the print medium conveyed by the first conveyance unit; a cutting unit disposed on a downstream side in a conveyance direction in which the print medium is conveyed by the first conveyance unit and configured to cut the print medium, which is conveyed by the first conveyance unit, along the conveyance direction; and a second conveyance unit disposed on the cutting unit, and the printing apparatus includes a correction unit configured to correct a parameter related to conveyance of at least one of the first conveyance unit and the second conveyance unit, based on information about the print medium.Type: ApplicationFiled: August 23, 2021Publication date: March 17, 2022Inventors: Hiroshi Kawafuji, Hiroshi Taira, Kazuhiko Sato, Taku Yokozawa, Noboru Kunimine, Akiko Aichi, Satoshi Azuma, Sae Mogi, Kei Yoshizawa, Shingo Nishioka, Junichi Saito, Hajime Nagai, Naoko Baba, Yuji Konno, Serena Yoshikawa, Satoshi Wada
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Publication number: 20220016917Abstract: A recording apparatus includes a recording unit, a scanning unit configured to perform relative scanning by moving the recording unit and a recording medium relative to each other at least once with respect to a unit region on the recording medium, a recovery unit configured to perform a recovery operation for maintaining or recovering a recording performance of the recording unit for application of a recording material, and a control unit configured to control the recovery unit, wherein the control unit acquires recording mode information about recording of an image to be performed on a recording medium for (n+1)-th page (n being a natural number) and determines, based on the acquired recording mode information, whether to perform an inter-page recovery operation at timing after recording of an image on a recording medium for n-th page ends and before recording of an image on a recording medium for (n+1)-th page starts.Type: ApplicationFiled: July 12, 2021Publication date: January 20, 2022Inventors: Toshimitsu Danzuka, Masataka Kato, Hiroto Kango, Rie Takekoshi, Akihiro Tomida, Tomoki Yamamuro, Keita Ishimi, Kazuki Narumi, Taku Yokozawa, Kazuo Suzuki, Kazuhiko Sato
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Publication number: 20210402813Abstract: A printing apparatus includes a printing unit configured to print an image on a print medium, an acquiring unit configured to acquire temperature information of the printing unit, and a control unit configured to control the printing unit so as to start relative scanning in a case where a temperature that is indicated by the temperature information has reached a print permission temperature. The print permission temperature in a first print mode whose speed at a time of a constant speed in relative scanning is a first speed is a first temperature. The print permission temperature in a second print mode whose speed at the time of the constant speed is a second speed that is faster than the first speed is a second temperature that is lower than the first temperature.Type: ApplicationFiled: June 23, 2021Publication date: December 30, 2021Inventors: Takeshi Murase, Kazuhiko Sato, Taku Yokozawa, Noburu Kunimine, Hiroshi Taira, Hiroshi Kawafuji, Sae Mogi, Akiko Aichi
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Patent number: 11077670Abstract: According to an embodiment of this invention, an apparatus comprises: a detachable inktank containing ink; a subtank containing the ink supplied from the inktank; a printhead configured to discharge the ink supplied from the subtank; an ink supply path connecting the subtank to the printhead; a valve arranged on the ink supply path; a supply unit configured to supply the ink from the inktank to the subtank by repeatedly opening and closing the valve; a suction unit configured to suck the ink from the printhead; and a control unit configured to control, when the inktank is attached, the supply unit to operate for a predetermined number of times to supply the ink from the inktank to the subtank, and to subsequently control the suction unit to operate to supply the ink from the subtank to the printhead.Type: GrantFiled: January 22, 2019Date of Patent: August 3, 2021Assignee: Canon Kabushiki KaishaInventors: Toshimitsu Danzuka, Naoaki Wada, Kazuki Narumi, Tomoki Yamamuro, Hiroshi Taira, Akiko Aichi, Noboru Kunimine, Taku Yokozawa, Kazuo Suzuki, Kazuhiko Sato, Masataka Kato, Shin Genta, Hiroto Kango
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Patent number: 10611156Abstract: An inkjet recording apparatus according to the present disclosure executes a first wiping operation in a case where the count value counted by the count unit is higher than a first threshold value while the recording operation is being performed and execute a second wiping operation when the recording operation completes in a case where the count value counted by the count unit is higher than a second threshold value. The inkjet recording apparatus also executes the second wiping operation when the first wiping operation has been performed while the recording operation is being performed.Type: GrantFiled: June 18, 2018Date of Patent: April 7, 2020Assignee: CANON KABUSHIKI KAISHAInventors: Hiroshi Taira, Toshimitsu Danzuka, Taku Yokozawa, Noboru Kunimine, Akiko Aichi, Kazuki Narumi, Tomoki Yamamuro, Kazuhiko Sato, Kazuo Suzuki
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Patent number: 10479090Abstract: An inkjet recording apparatus includes a recording unit, a first ink storage unit, a second ink storage unit, a discharge unit, a first detection unit configured to detect that an amount of the ink stored in the first ink storage unit is below a first predetermined amount, and a second detection unit configured to detect that an amount of the ink stored in the second ink storage unit is below a second predetermined amount. The inkjet recording apparatus further includes a control unit configured to control the discharge operation after the detection by the first detection unit and the detection by the second detection unit based on a detection timing of the first detection unit and a detection timing of the second detection unit.Type: GrantFiled: March 6, 2018Date of Patent: November 19, 2019Assignee: Canon Kabushiki KaishaInventors: Toshimitsu Danzuka, Taku Yokozawa, Masataka Kato, Akiko Aichi, Shin Genta, Kazuki Narumi
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Publication number: 20190232671Abstract: According to an embodiment of this invention, an apparatus comprises: a detachable inktank containing ink; a subtank containing the ink supplied from the inktank; a printhead configured to discharge the ink supplied from the subtank; an ink supply path connecting the subtank to the printhead; a valve arranged on the ink supply path; a supply unit configured to supply the ink from the inktank to the subtank by repeatedly opening and closing the valve; a suction unit configured to suck the ink from the printhead; and a control unit configured to control, when the inktank is attached, the supply unit to operate for a predetermined number of times to supply the ink from the inktank to the subtank, and to subsequently control the suction unit to operate to supply the ink from the subtank to the printhead.Type: ApplicationFiled: January 22, 2019Publication date: August 1, 2019Inventors: Toshimitsu Danzuka, Naoaki Wada, Kazuki Narumi, Tomoki Yamamuro, Hiroshi Taira, Akiko Aichi, Noboru Kunimine, Taku Yokozawa, Kazuo Suzuki, Kazuhiko Sato, Masataka Kato, Shin Genta, Hiroto Kango
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Publication number: 20180370239Abstract: An inkjet recording apparatus according to the present disclosure executes a first wiping operation in a case where the count value counted by the count unit is higher than a first threshold value while the recording operation is being performed and execute a second wiping operation when the recording operation completes in a case where the count value counted by the count unit is higher than a second threshold value. The inkjet recording apparatus also executes the second wiping operation when the first wiping operation has been performed while the recording operation is being performed.Type: ApplicationFiled: June 18, 2018Publication date: December 27, 2018Inventors: Hiroshi Taira, Toshimitsu Danzuka, Taku Yokozawa, Noboru Kunimine, Akiko Aichi, Kazuki Narumi, Tomoki Yamamuro, Kazuhiko Sato, Kazuo Suzuki
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Publication number: 20180257380Abstract: An inkjet recording apparatus includes a recording unit, a first ink storage unit, a second ink storage unit, a discharge unit, a first detection unit configured to detect that an amount of the ink stored in the first ink storage unit is below a first predetermined amount, and a second detection unit configured to detect that an amount of the ink stored in the second ink storage unit is below a second predetermined amount. The inkjet recording apparatus further includes a control unit configured to control the discharge operation after the detection by the first detection unit and the detection by the second detection unit based on a detection timing of the first detection unit and a detection timing of the second detection unit.Type: ApplicationFiled: March 6, 2018Publication date: September 13, 2018Inventors: Toshimitsu Danzuka, Taku Yokozawa, Masataka Kato, Akiko Aichi, Shin Genta, Kazuki Narumi
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Patent number: 10022961Abstract: A recording apparatus is capable of executing multiple types of different temperature control. A recording head of the recording apparatus has multiple temperature sensors disposed at different positions from each other in the recording head. Each of the multiple types of different temperature control is performed based on representative temperatures acquired using different combinations of the temperature sensors.Type: GrantFiled: April 24, 2017Date of Patent: July 17, 2018Assignee: Canon Kabushiki KaishaInventors: Taku Yokozawa, Hiroaki Shirakawa, Mitsutoshi Nagamura, Yuhei Oikawa, Yosuke Ishii, Hiroaki Komatsu, Satoshi Azuma, Hiroshi Taira
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Patent number: 9895894Abstract: After printing is performed by driving only some printing elements, the other printing elements are driven so that kogation is deposited on the surface of the other printing elements.Type: GrantFiled: May 17, 2016Date of Patent: February 20, 2018Assignee: CANON KABUSHIKI KAISHAInventors: Hiroshi Taira, Taku Yokozawa, Hiroaki Shirakawa, Mitsutoshi Nagamura, Yuhei Oikawa, Satoshi Azuma, Yosuke Ishii, Hiroaki Komatsu
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Patent number: 9873247Abstract: A driving pulse to be applied is changed when an overlapped level of invert timing of driving pulse is large.Type: GrantFiled: March 8, 2016Date of Patent: January 23, 2018Assignee: Canon Kabushiki KaishaInventors: Yuhei Oikawa, Taku Yokozawa, Hiroaki Shirakawa, Mitsutoshi Nagamura, Hiroshi Taira, Satoshi Azuma, Yosuke Ishii, Hiroaki Komatsu
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Patent number: 9855743Abstract: Recording elements are driven by changing a driving pulse applied thereto in accordance with information regarding a total number of times the recording elements have been driven.Type: GrantFiled: September 28, 2016Date of Patent: January 2, 2018Assignee: CANON KABUSHIKI KAISHAInventors: Hiroshi Taira, Kazuhiko Sato, Taku Yokozawa, Hiroaki Shirakawa, Mitsutoshi Nagamura, Yuhei Oikawa, Yosuke Ishii, Satoshi Azuma, Hiroaki Komatsu
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Patent number: 9738069Abstract: A driving pulse to be applied to a plurality of print elements in a print element array is decided based on the deviation of the discharge amount from the print elements.Type: GrantFiled: May 24, 2016Date of Patent: August 22, 2017Assignee: CANON KABUSHIKI KAISHAInventors: Yuhei Oikawa, Taku Yokozawa, Hiroaki Shirakawa, Mitsutoshi Nagamura, Hiroshi Taira, Yosuke Ishii, Satoshi Azuma, Hiroaki Komatsu, Kazuhiko Sato
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Publication number: 20170225459Abstract: A recording apparatus is capable of executing multiple types of different temperature control. A recording head of the recording apparatus has multiple temperature sensors disposed at different positions from each other in the recording head. Each of the multiple types of different temperature control is performed based on representative temperatures acquired using different combinations of the temperature sensors.Type: ApplicationFiled: April 24, 2017Publication date: August 10, 2017Inventors: Taku Yokozawa, Hiroaki Shirakawa, Mitsutoshi Nagamura, Yuhei Oikawa, Yosuke Ishii, Hiroaki Komatsu, Satoshi Azuma, Hiroshi Taira
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Patent number: RE46517Abstract: A method and recording apparatus including discharging ink to record an image, storing a parameter relating to a cumulative recording amount of the recording apparatus, setting a detection interval based on the parameter relating to the cumulative recording amount, and detecting a discharge state of the ink discharged from the recording head based on the set interval.Type: GrantFiled: August 14, 2013Date of Patent: August 22, 2017Assignee: Canon Kabushiki KaishaInventors: Taku Yokozawa, Nobumori Shimizu