Patents by Inventor Atsushi Kohnotoh
Atsushi Kohnotoh 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: 20240116302Abstract: An apparatus includes a support member configured to support a printhead, a rotating member configured to be supported by the support member so as to be rotatable to an open position at which the printhead is capable of being attached to or detached from the support member and a closed position, a shaft portion arranged on one of the rotating member and the support member, a shaft supporting portion arranged on the other of the rotating member and the support member, the shaft portion being inserted to the shaft supporting portion in an axial direction, and a structure configured to regulate displacement of the rotating member in the axial direction in a predetermined rotation range of the rotating member, and permit displacement of the rotating member in the axial direction in a rotation position outside the predetermined rotation range.Type: ApplicationFiled: October 6, 2023Publication date: April 11, 2024Inventors: ATSUSHI KOHNOTOH, TAKASHI ABE, KEN TAKENAGA, YUSUKE NARATANI, KOUSUKE TANAKA
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Publication number: 20240083183Abstract: A recording apparatus includes: a carriage on which a liquid ejection head that ejects a liquid is mounted, the carriage being reciprocally movable in a scanning direction; a guide member that extends in the scanning direction and that guides movement of the carriage in the scanning direction; and a sliding member that is provided on the carriage and has a sliding surface that slides with a guide surface of the guide member via a lubricant, in a case where the carriage moves in the scanning direction. The carriage has a projecting portion that projects farther toward one side in the scanning direction than the sliding member. A gap formed between the projecting portion and the guide surface becomes smaller toward the sliding member in the scanning direction.Type: ApplicationFiled: September 1, 2023Publication date: March 14, 2024Inventors: YUSUKE NARATANI, ATSUSHI KOHNOTOH, KEN TAKENAGA, TAKASHI ABE, KOUSUKE TANAKA
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Publication number: 20230415504Abstract: An image recording apparatus includes a belt passed around a drive pulley and a driven pulley, a support member configured to support a recording head and fixed to the belt, a holder member, having a claw part, configured to hold the driven pulley, and a frame having a first opening for the claw part to penetrate. The holder member is attached to the frame such as to be movable relative to the drive pulley. The first opening has an enlarged opening portion allowing the claw part to pass through without engaging with the frame on one side closer to the drive pulley. At least a portion of the claw part is positioned within a part of the first opening excluding the enlarged opening portion in a state where the holder member is positioned in a predetermined location closer to the drive pulley.Type: ApplicationFiled: June 21, 2023Publication date: December 28, 2023Inventors: TAKASHI ABE, YASUYUKI TAKANAKA, NORIO SAKURAI, ATSUSHI KOHNOTOH, TAIJI MARUYAMA, YUSUKE NARATANI, SHUHEI YAMAGUCHI, KOUSUKE TANAKA
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Publication number: 20230322004Abstract: An embodiment of the present invention is a printing apparatus including: a printing head that includes a nozzle ejecting ink for printing on a printing medium conveyed in a conveyance direction; a carriage on which the printing head is mounted and that reciprocally moves in a main scanning direction; a sliding member attached to the carriage such that the carriage can change a position in a vertical direction; and a guide member that includes a first surface with which the sliding member is brought into contact and a second surface as a back surface of the first surface and guides the movement of the main scanning direction of the carriage, in which the sliding member includes a first regulation unit facing the second surface in a position away from the second surface at a predetermined distance.Type: ApplicationFiled: March 30, 2023Publication date: October 12, 2023Inventors: KOUSUKE TANAKA, NORIO SAKURAI, ATSUSHI KOHNOTOH, TAKASHI ABE, YASUYUKI TAKANAKA, TAIJI MARUYAMA, YUSUKE NARATANI, SHUHEI YAMAGUCHI, SHIMPEI FUJISAKI
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Patent number: 11766873Abstract: A liquid ejecting apparatus includes: a tube configured to establish communication of a flow channel by connecting an ejecting portion configured to eject a liquid to an ejection target medium to a container configured to contain the liquid to be supplied to the ejecting portion; a valve mechanism configured to switch between a close state of pressing and closing the tube and an open state of opening the tube depending on a rotational position of a cam member configured to be rotated by a driving source; and a detection unit configured to detect whether the valve mechanism is in the close state or in the open state. The valve mechanism includes a detection target portion. The detection unit detects whether the valve mechanism is in the close state or in the open state by detecting the detection target portion.Type: GrantFiled: February 12, 2022Date of Patent: September 26, 2023Assignee: Canon Kabushiki KaishaInventor: Atsushi Kohnotoh
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Publication number: 20230115030Abstract: A recording apparatus includes a conveyance unit, a carriage, a recording head, a frame, and a guide member. The conveyance unit conveys a sheet in a conveyance direction. The carriage moves in a scanning direction crossing the conveyance direction and has a first abutment portion and a second abutment portion higher in position than the first abutment portion. The recording head is mounted on the carriage, arranged to face a sheet conveyed by the conveyance unit, and ejects a liquid onto the conveyed sheet to record an image. The frame has a first sliding portion in abutment with the first abutment portion and has a second sliding portion in abutment with the second abutment portion. The guide member supports the carriage and is fixed to the frame at a position separated from the first sliding portion.Type: ApplicationFiled: October 10, 2022Publication date: April 13, 2023Inventors: Taiji Maruyama, Atsushi Kohnotoh, Yasuyuki Takanaka, Norio Sakurai, Takashi Abe, Kousuke Tanaka, Yusuke Naratani, Shuhei Yamaguchi
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Patent number: 11584134Abstract: A print head can suppress contamination due to ink at the time of being mounted on a printing apparatus and/or after being detached from the printing apparatus. For this purpose, a positioning pin longer than a needle is provided in a joint unit of the print head, and the joint unit includes a shutter which closes an opening on a supply side and an opening on a collection side when the print head is detached.Type: GrantFiled: October 2, 2020Date of Patent: February 21, 2023Assignee: Canon Kabushiki KaishaInventors: Noboru Shimoyama, Soji Kondo, Akira Kida, Tetsuji Kurata, Atsushi Kohnotoh
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Patent number: 11518174Abstract: An inkjet printing apparatus includes a print head ejecting ink, a tank reserving ink to be supplied to the print head and a joint unit being capable of connecting the print head and the tank to each other. The joint unit has a connecting portion for supplying ink to the print head and a shaft that is rotatable by a drive source so as to move in an axial direction. The connecting portion moves together with the shaft. The print head includes a head joint connectable to the connecting portion and an engaging portion engageable with one end of the shaft. The shaft is rotated to be engaged with the engaging portion so that the head joint and the connecting portion are connected to each other.Type: GrantFiled: October 6, 2020Date of Patent: December 6, 2022Assignee: Canon Kabushiki KaishaInventors: Tetsuji Kurata, Akira Kida, Atsushi Kohnotoh
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Publication number: 20220258486Abstract: A liquid ejecting apparatus includes: a tube configured to establish communication of a flow channel by connecting an ejecting portion configured to eject a liquid to an ejection target medium to a container configured to contain the liquid to be supplied to the ejecting portion; a valve mechanism configured to switch between a close state of pressing and closing the tube and an open state of opening the tube depending on a rotational position of a cam member configured to be rotated by a driving source; and a detection unit configured to detect whether the valve mechanism is in the close state or in the open state. The valve mechanism includes a detection target portion. The detection unit detects whether the valve mechanism is in the close state or in the open state by detecting the detection target portion.Type: ApplicationFiled: February 12, 2022Publication date: August 18, 2022Inventor: Atsushi Kohnotoh
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Patent number: 11104164Abstract: There are provided an inkjet printing apparatus capable of maintaining posture of a holder regardless of presence or absence of an item which the holder supports and a method for controlling the inkjet printing apparatus. For this purpose, based on a change value Dsi of a rotary encoder 110 while driving a carriage motor 92 with driving force capable of maintaining posture of a head holder 90 which does not support a print head 8, the presence or absence of the print head 8 which the head holder 90 supports.Type: GrantFiled: March 26, 2019Date of Patent: August 31, 2021Assignee: Canon Kabushiki KaishaInventors: Atsushi Kohnotoh, Atsushi Miyahara, Kazunori Yamauchi
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Patent number: 10946663Abstract: An inkjet printing apparatus is provided capable of attaching and detaching of a print head with a mechanism that is easily operable and simple, while preventing an erroneous operation. For the purpose, it is configured so that the press/release for the print head is possible along with movement of the joint member. Further, when the joint member is connected, the connection of the joint member is performed after pressing the print head, and when the connection of the joint member is released, the pressure on the print head is released after releasing the connection of the joint member.Type: GrantFiled: March 26, 2019Date of Patent: March 16, 2021Assignee: Canon Kabushiki KaishaInventor: Atsushi Kohnotoh
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Patent number: 10919291Abstract: The printing apparatus comprises: a print head having an ejection opening surface on which an ejection opening configured to eject ink is formed; a holder member that holds the print head; a moving unit configured to move the holder member; a fixing member that fixes the holder member; a detecting unit configured to detect a moving distance of the holder member; and a first determining part configured to determine that the holder member is fixed by the fixing member in a case where the moving distance detected by the detecting unit is less than a predetermined value.Type: GrantFiled: August 5, 2019Date of Patent: February 16, 2021Assignee: Canon Kabushiki KaishaInventors: Atsushi Kohnotoh, Noboru Shimoyama, Takahiro Kiuchi
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Patent number: 10899134Abstract: The printing apparatus of the present invention includes: an openable cover that covers a head holder that mounts a print head detachably and an ink tank, detachable from the apparatus, configured to store ink to be supplied to the print head; a lock unit capable of switching between a lock state where the cover is fixed to a closed position and an unlocked state where the cover is not fixed to the closed position; and a control unit configured to control, in a case of receiving instructions to detach the ink tank, the lock unit to switch to the unlocked state after controlling a holder moving unit to move the head holder to a position at which the print head is undetachable, as well as controlling a pressurizing supply unit to stop pressurization and supply ink from the ink tank to the print head.Type: GrantFiled: March 12, 2019Date of Patent: January 26, 2021Assignee: Canon Kabushiki KaishaInventors: Akira Kida, Tetsuji Kurata, Atsushi Kohnotoh, Toshihide Wada, Noboru Shimoyama
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Publication number: 20210016575Abstract: An inkjet printing apparatus includes a print head ejecting ink, a tank reserving ink to be supplied to the print head and a joint unit being capable of connecting the print head and the tank to each other. The joint unit has a connecting portion for supplying ink to the print head and a shaft that is rotatable by a drive source so as to move in an axial direction. The connecting portion moves together with the shaft. The print head includes a head joint connectable to the connecting portion and an engaging portion engageable with one end of the shaft. The shaft is rotated to be engaged with the engaging portion so that the head joint and the connecting portion are connected to each other.Type: ApplicationFiled: October 6, 2020Publication date: January 21, 2021Inventors: Tetsuji Kurata, Akira Kida, Atsushi Kohnotoh
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Publication number: 20210016574Abstract: A print head can suppress contamination due to ink at the time of being mounted on a printing apparatus and/or after being detached from the printing apparatus. For this purpose, a positioning pin longer than a needle is provided in a joint unit of the print head, and the joint unit includes a shutter which closes an opening on a supply side and an opening on a collection side when the print head is detached.Type: ApplicationFiled: October 2, 2020Publication date: January 21, 2021Inventors: Noboru Shimoyama, Soji Kondo, Akira Kida, Tetsuji Kurata, Atsushi Kohnotoh
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Patent number: 10843473Abstract: An inkjet printing apparatus includes a print head ejecting ink, a tank reserving ink to be supplied to the print head and a joint unit being capable of connecting the print head and the tank to each other. The joint unit has a connecting portion for supplying ink to the print head and a shaft that is rotatable by a drive source so as to move in an axial direction. The connecting portion moves together with the shaft. The print head includes a head joint connectable to the connecting portion and an engaging portion engageable with one end of the shaft. The shaft is rotated to be engaged with the engaging portion so that the head joint and the connecting portion are connected to each other.Type: GrantFiled: March 28, 2019Date of Patent: November 24, 2020Assignee: Canon Kabushiki KaishaInventors: Tetsuji Kurata, Akira Kida, Atsushi Kohnotoh
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Patent number: 10843481Abstract: A liquid ejection apparatus capable of detecting ink leakage early is provided. For this purpose, an ink leakage detection pin and a wall capable of storing leaked ink are provided at a joint part which is the part connecting the print head and the ink supply unit.Type: GrantFiled: March 22, 2019Date of Patent: November 24, 2020Assignee: Canon Kabushiki KaishaInventors: Noboru Shimoyama, Atsushi Kohnotoh, Ryoma Arai, Tsuyoshi Saeki
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Patent number: 10814637Abstract: A print head can suppress contamination due to ink at the time of being mounted on a printing apparatus and/or after being detached from the printing apparatus. For this purpose, a positioning pin longer than a needle is provided in a joint unit of the print head, and the joint unit includes a shutter which closes an opening on a supply side and an opening on a collection side when the print head is detached.Type: GrantFiled: March 22, 2019Date of Patent: October 27, 2020Assignee: Canon Kabushiki KaishaInventors: Noboru Shimoyama, Soji Kondo, Akira Kida, Tetsuji Kurata, Atsushi Kohnotoh
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Patent number: 10792913Abstract: An inkjet printing apparatus includes a print head ejecting ink, a tank reserving ink to be supplied to the print head; and a joint unit being capable of connecting the print head and the tank to each other. The inkjet printing apparatus further includes a detecting unit detecting a position of the joint unit, which is moved by a drive source, with respect to the print head.Type: GrantFiled: March 27, 2019Date of Patent: October 6, 2020Assignee: Canon Kabushiki KaishaInventor: Atsushi Kohnotoh
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Publication number: 20200156377Abstract: There is provided an inkjet printing apparatus capable of efficiently performing print preparation in a standby state. For this purpose, the inkjet printing apparatus includes: a cap moving unit for bringing a cap member for protecting an ejection opening surface of a print head into or out of intimate contact with the ejection opening surface; and a positioning unit for positioning the print head so as to achieve a printing operation. The positioning unit allows a reference portion disposed at the print head to abut against a distance defining member for defining a predetermined distance between the ejection opening surface 8a and the platen so as to position the print head. At this time, the distance defining member is inserted into a portion at which the reference portion can abut in association with operation in which the cap moving unit separates the cap member from the ejection opening surface.Type: ApplicationFiled: January 23, 2020Publication date: May 21, 2020Inventor: Atsushi Kohnotoh