Patents by Inventor Seiji Ogasawara
Seiji Ogasawara 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: 20220041388Abstract: For a printing apparatus, a first conveyance speed for a first printing medium is determined according to first print data to be printed on the first printing medium and a second conveyance speed for a second printing medium is determined according to second print data to be printed on the second printing medium that follows the first printing medium along a conveying path. In a case where the second conveyance speed is equal to the first conveyance speed, a conveyance operation of the second printing medium is started before the first printing medium is discharged from the conveying path. In a case where the second conveyance speed is different from the first conveyance speed, the conveyance operation of the second printing medium is started after the first printing medium is discharged from the conveying path.Type: ApplicationFiled: October 22, 2021Publication date: February 10, 2022Inventors: Masaaki Matsuura, Seiji Ogasawara, Takaaki Ishida, Masakazu Tsukuda, Shuichi Tokuda, Kazuki Matsuo
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Patent number: 11207905Abstract: Provided is a printing apparatus that allows the user to easily perceive that the cover is unlocked. In the printing apparatus that includes: a cover unit configured to expose the conveying path, along which the printing medium is conveyed, to the outside when the cover unit is opened and that shields the conveying path when the cover unit is closed; and a locking configured to lock the cover unit to keep it closed, and that performs printing on the printing medium being conveyed along the conveying path, the cover unit is urged by an urging unit in the opening direction. In addition, when the locking unit unlocks the cover unit the cover unit is opened by a predetermined degree by the urging force of the urging unit.Type: GrantFiled: February 6, 2019Date of Patent: December 28, 2021Assignee: Canon Kabushiki KaishaInventors: Kazuki Matsuo, Seiji Ogasawara, Takaaki Ishida, Shuichi Tokuda, Masakazu Tsukuda, Masaaki Matsuura
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Patent number: 11198576Abstract: A technique that enables application of additional conveyance force to a print medium and conveyance of various sizes of print media without multi-feed is described. A conveyance device includes a feed unit, a first conveyance unit that conveys a print medium, and a second conveyance unit that conveys a print medium fed by the feed unit to the first conveyance unit, and is capable of correcting the skew of a print medium by causing the second conveyance unit to convey the print medium with its leading edge in abutment with the first conveyance unit. This conveyance device is configured to cause the feed unit to apply conveyance force to a print medium conveyed by the second conveyance unit, depending on the size of the print medium in the conveyance direction.Type: GrantFiled: February 8, 2019Date of Patent: December 14, 2021Assignee: Canon Kabushiki KaishaInventors: Kazuki Matsuo, Seiji Ogasawara, Takaaki Ishida, Shuichi Tokuda, Masakazu Tsukuda, Masaaki Matsuura
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Patent number: 11167945Abstract: For a printing apparatus, a first conveyance speed for a first printing medium is determined according to first print data to be printed on the first printing medium and a second conveyance speed for a second printing medium is determined according to second print data to be printed on the second printing medium that follows the first printing medium along a conveying path. In a case where the second conveyance speed is equal to the first conveyance speed, a conveyance operation of the second printing medium is started before the first printing medium is discharged from the conveying path. In a case where the second conveyance speed is different from the first conveyance speed, the conveyance operation of the second printing medium is started after the first printing medium is discharged from the conveying path.Type: GrantFiled: December 14, 2018Date of Patent: November 9, 2021Assignee: Canon Kabushiki KaishaInventors: Masaaki Matsuura, Seiji Ogasawara, Takaaki Ishida, Masakazu Tsukuda, Shuichi Tokuda, Kazuki Matsuo
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Patent number: 11001083Abstract: A printing apparatus includes a first feeding part configured to feed print media from a first support part supporting the print media, a second feeding part configured to feed print media from a second support part supporting the print media, and a print head configured to print on the print media fed by the first feeding part or the second feeding part. Further, the printing apparatus includes a first conveying path where the print media fed by the first feeding part are conveyed to the print head, and a second conveying path where the print media fed by the second feeding part are conveyed to the print head. At least a part of the second feeding part protrudes in a predetermined spatial area within the first conveying path during a feed operation of feeding print media from the second support part.Type: GrantFiled: September 8, 2020Date of Patent: May 11, 2021Assignee: Canon Kabushiki KaishaInventors: Masakazu Tsukuda, Seiji Ogasawara, Takaaki Ishida, Shuichi Tokuda, Masaaki Matsuura, Kazuki Matsuo
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Patent number: 10974527Abstract: An inkjet printing apparatus includes a print head configured to perform print operation, the print head having an ejection opening surface on which a plurality of ejection openings for ejecting ink are arrayed along an array direction, and a moving unit configured to move the print head between a printing position, at which the print operation is performed, and a standby position, at which the print operation is not performed. The moving unit moves the print head between the printing position and the standby position by performing rotational movement, in which the print head is rotated around a rotation axis that is parallel to the array direction, and linear movement, in which the print head is moved linearly.Type: GrantFiled: August 20, 2019Date of Patent: April 13, 2021Assignee: Canon Kabushiki KaishaInventors: Tetsuyo Ohashi, Yasuyuki Takanaka, Tetsuya Ishikawa, Seiji Ogasawara, Noriko Sato, Akira Kida, Noboru Shimoyama
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Patent number: 10889134Abstract: To shorten the time to be taken to start executing a process to handle conveyance trouble of a print medium after the occurrence of the conveyance trouble, a printing apparatus of the present invention, upon sensing of conveyance trouble by a sensing unit during a printing operation, stops the conveyance of the print medium in the conveyance trouble and any print medium located upstream of it, and moves a printing head from a first position at which the printing head performs printing on a print medium to a second position to which the printing head is retreated from the first position, in parallel with a discharge operation for conveying, to a discharge unit, any print medium located downstream of the print medium in the conveyance trouble.Type: GrantFiled: February 7, 2019Date of Patent: January 12, 2021Assignee: Canon Kabushiki KaishaInventors: Takaaki Ishida, Seiji Ogasawara, Masakazu Tsukuda, Shuichi Tokuda, Masaaki Matsuura, Kazuki Matsuo, Tomofumi Nishida, Yuna Hattori
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Publication number: 20200398590Abstract: A printing apparatus includes a first feeding part configured to feed print media from a first support part supporting the print media, a second feeding part configured to feed print media from a second support part supporting the print media, and a print head configured to print on the print media fed by the first feeding part or the second feeding part. Further, the printing apparatus includes a first conveying path where the print media fed by the first feeding part are conveyed to the print head, and a second conveying path where the print media fed by the second feeding part are conveyed to the print head. At least a part of the second feeding part protrudes in a predetermined spatial area within the first conveying path during a feed operation of feeding print media from the second support part.Type: ApplicationFiled: September 8, 2020Publication date: December 24, 2020Inventors: Masakazu Tsukuda, Seiji Ogasawara, Takaaki Ishida, Shuichi Tokuda, Masaaki Matsuura, Kazuki Matsuo
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Patent number: 10870550Abstract: In a printing apparatus, the ends of print media fed continuously can be prevented from colliding with each other. The printing apparatus includes a printing unit configured to perform a print operation, a detecting unit configured to detect a conveyance abnormality, a conveying unit configured to convey a preceding print medium and a succeeding print medium, a conveying path having a first area including a curved portion at which a conveying direction of the print medium is curved and a second area upstream of the first area, and an opening unit capable of opening the first area of the conveying path. In a case in which a leading edge of the succeeding print medium is located in the second area at the time of the detecting unit detecting conveyance abnormality of the preceding print medium, the conveying unit conveys the succeeding print medium so that the leading edge of the succeeding print medium reaches the first area.Type: GrantFiled: January 28, 2019Date of Patent: December 22, 2020Assignee: Canon Kabushiki KaishaInventors: Shuichi Tokuda, Seiji Ogasawara, Takaaki Ishida, Masakazu Tsukuda, Masaaki Matsuura, Kazuki Matsuo, Tomofumi Nishida, Yuna Hattori
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Patent number: 10800189Abstract: A printing apparatus capable of performing jam processing includes a movable platen. For this purpose, once support of a platen supporting member is released, the platen will automatically turn to a predetermined angle.Type: GrantFiled: December 14, 2018Date of Patent: October 13, 2020Assignee: Canon Kabushiki KaishaInventors: Kazuki Matsuo, Seiji Ogasawara, Takaaki Ishida, Shuichi Tokuda, Masakazu Tsukuda, Masaaki Matsuura
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Publication number: 20200316967Abstract: There is provided an inkjet printing apparatus capable of stably outputting high quality images in a configuration of feeding a print medium that is kept horizontal, performing printing by the use of a print head, and conveying the print medium vertically upward. To this purpose, a platen that supports the back side of the print medium in a position facing a printing part of the print head is located to support the print medium at an angle greater than 0° and less than 90° with respect to the horizontal direction, thereby reducing a contact pressure from roller pairs on the printed side immediately after printing.Type: ApplicationFiled: June 22, 2020Publication date: October 8, 2020Inventors: Tetsuyo Ohashi, Yasuyuki Takanaka, Tetsuya Ishikawa, Seiji Ogasawara, Noriko Sato, Akira Kida, Noboru Shimoyama
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Patent number: 10792938Abstract: A printing apparatus includes a first feeding part configured to feed print media from a first support part supporting the print media, a second feeding part configured to feed print media from a second support part supporting the print media, and a print head configured to print on the print media fed by the first feeding part or the second feeding part. Further, the printing apparatus includes a first conveying path where the print media fed by the first feeding part are conveyed to the print head, and a second conveying path where the print media fed by the second feeding part are conveyed to the print head. At least a part of the second feeding part protrudes in a predetermined spatial area within the first conveying path during a feed operation of feeding print media from the second support part.Type: GrantFiled: December 18, 2018Date of Patent: October 6, 2020Assignee: Canon Kabushiki KaishaInventors: Masakazu Tsukuda, Seiji Ogasawara, Takaaki Ishida, Shuichi Tokuda, Masaaki Matsuura, Kazuki Matsuo
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Patent number: 10787010Abstract: A print media feeding apparatus includes a stacking part configured to stack print media; a feeding roller which is movable to an abutting position at which the feeding roller contacts the print media stacked on the stacking part and to a separated position separated from the print media stacked on the stacking part and configured to feed a print medium by rotating at the abutting position; a separation member configured to separate the print media; and a return unit configured to perform a return operation of returning the print medium other than a top print medium which the feeding roller abuts. The feeding roller moves to the separated position after feeding the print medium from the stacking part. The return unit performs the return operation upon the feeding roller moving to the separated position. After the return operation, the feeding roller stops at the abutting position.Type: GrantFiled: December 17, 2018Date of Patent: September 29, 2020Assignee: Canon Kabushiki KaishaInventors: Masakazu Tsukuda, Seiji Ogasawara, Takaaki Ishida, Shuichi Tokuda, Masaaki Matsuura, Kazuki Matsuo, Motoyuki Taguchi
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Patent number: 10723153Abstract: An inkjet printing apparatus includes a stacking unit, a print head having an ejection opening surface located vertically above the stacking unit, and a platen that supports a back side of a print medium at an angle greater than 40° and less than 50° with respect to a horizontal direction. A discharging unit is located vertically above the print head, and a print medium subjected to printing by the print head is discharged onto the discharging unit. A conveying unit conveys a print medium, subjected to printing by the print head, vertically upward toward the discharging unit. In addition, the ejection opening surface faces the platen in a case in which the inkjet printing apparatus is in a printing state, and faces downward with respect to a direction of gravity in a case in which the inkjet printing apparatus is in a standby state.Type: GrantFiled: January 26, 2018Date of Patent: July 28, 2020Assignee: Canon Kabushiki KaishaInventors: Tetsuyo Ohashi, Yasuyuki Takanaka, Tetsuya Ishikawa, Seiji Ogasawara, Noriko Sato, Akira Kida, Noboru Shimoyama
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Patent number: 10640310Abstract: A sheet feeding device and a printing apparatus capable of estimating a number of remaining sheets without error include a loading member on which sheets are loaded, a lift unit that moves the loading member up and down, a position detection unit that detects a lift-up position to which the loading member moves up, a sheet detection unit that detects that a sheet at an uppermost position of the sheets loaded on the loading member has moved up to a feeding position by an upward movement of the loading member, a feeding roller that feeds a sheet at the feeding position, and an estimation unit that estimates the number of remaining sheets loaded on the loading member based on a combination of detection results of the sheet detection unit and the position detection unit.Type: GrantFiled: December 17, 2018Date of Patent: May 5, 2020Assignee: Canon Kabushiki KaishaInventors: Masaaki Matsuura, Seiji Ogasawara, Takaaki Ishida, Masakazu Tsukuda, Shuichi Tokuda, Kazuki Matsuo
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Patent number: 10549554Abstract: A platen includes: a supporting portion that can support a sheet; a suction unit that sucks the sheet in such a manner as to attach the sheet to the supporting portion; a first ink receiver that receives ink ejected downstream of the leading end of the sheet passing the supporting portion; and a second ink receiver that receives ink ejected upstream of the trailing end of the sheet passing the supporting portion.Type: GrantFiled: August 7, 2018Date of Patent: February 4, 2020Assignee: Canon Kabushiki KaishaInventors: Tetsuji Kurata, Seiji Ogasawara, Masakazu Tsukuda, Takahide Onuma, Yasunori Saito, Arihito Miyakoshi, Masahiko Kubota, Yusuke Imahashi, Nobuhito Yamaguchi, Hiroshi Arimizu, Yoshinori Itoh
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Patent number: 10543698Abstract: A platen includes a plurality of supporting portions capable of supporting a sheet; negative pressure chambers, to which a negative pressure is supplied, so as to suck a sheet facing the supporting portions to the supporting portions; and an ink receiver that receives ink ejected from a printhead to the outside of the sheet supported by the supporting portions. The plurality of supporting portions are arranged in a sheet width direction transverse a sheet conveyance direction. The plurality of negative pressure chambers are disposed in a manner corresponding to the plurality of supporting portions, respectively.Type: GrantFiled: September 27, 2017Date of Patent: January 28, 2020Assignee: Canon Kabushiki KaishaInventors: Takahide Onuma, Tetsuji Kurata, Seiji Ogasawara, Masakazu Tsukuda, Yasunori Saito
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Publication number: 20200016911Abstract: An inkjet printing apparatus includes a print head configured to perform print operation, the print head having an ejection opening surface on which a plurality of ejection openings for ejecting ink are arrayed along an array direction, and a moving unit configured to move the print head between a printing position, at which the print operation is performed, and a standby position, at which the print operation is not performed. The moving unit moves the print head between the printing position and the standby position by performing rotational movement, in which the print head is rotated around a rotation axis that is parallel to the array direction, and linear movement, in which the print head is moved linearly.Type: ApplicationFiled: August 20, 2019Publication date: January 16, 2020Inventors: Tetsuyo Ohashi, Yasuyuki Takanaka, Tetsuya Ishikawa, Seiji Ogasawara, Noriko Sato, Akira Kida, Noboru Shimoyama
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Patent number: 10406838Abstract: An inkjet printing apparatus includes a print head configured to perform a print operation, the print head having an ejection opening surface on which a plurality of ejection openings for ejecting ink are arrayed along a width direction, and a moving unit configured to move the print head between a printing position, in which the print operation is performed, and a standby position, in which the print operation is not performed. The moving unit moves the print head between the printing position and the standby position by simultaneously performing rotational movement, in which the print head is rotated around a rotation axis that is parallel to the width direction, and linear movement in the gravitational direction, of the print head.Type: GrantFiled: February 8, 2018Date of Patent: September 10, 2019Assignee: Canon Kabushiki KaishaInventors: Tetsuyo Ohashi, Yasuyuki Takanaka, Tetsuya Ishikawa, Seiji Ogasawara, Noriko Sato, Akira Kida, Noboru Shimoyama
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Publication number: 20190248165Abstract: Provided is a technique that enables application of additional conveyance force to a print medium and conveyance of various sizes of print media without multi-feed. A conveyance device includes a feed unit, a first conveyance unit that conveys a print medium, and a second conveyance unit that conveys a print medium fed by the feed unit to the first conveyance unit, and is capable of correcting the skew of a print medium by causing the second conveyance unit to convey the print medium with its leading edge in abutment with the first conveyance unit. This conveyance device is configured to cause the feed unit to apply conveyance force to a print medium conveyed by the second conveyance unit, depending on the size of the print medium in the conveyance direction.Type: ApplicationFiled: February 8, 2019Publication date: August 15, 2019Inventors: Kazuki Matsuo, Seiji Ogasawara, Takaaki Ishida, Shuichi Tokuda, Masakazu Tsukuda, Masaaki Matsuura