Patents by Inventor Taiji Maruyama

Taiji Maruyama 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).

  • Publication number: 20240109330
    Abstract: A printing apparatus includes a liquid tank unit, a printing head, and a supply tube unit. The liquid tank unit includes first and second liquid tanks that store liquid and are arranged in parallel to each other. The printing head ejects liquid from the first and second tanks while moving in a main scanning direction. The supply tube unit includes a first supply tube connecting the first liquid tank to the printing head and includes a second supply tube coupled in parallel to the first supply tube and connecting the second liquid tank to the printing head. The second supply tube transitions from a connected tube state in which the second and first supply tubes are coupled in parallel to a single tube state by being separated from the first supply tube, passes across the first supply tube, and is connected to a connection port of the second liquid tank.
    Type: Application
    Filed: September 28, 2023
    Publication date: April 4, 2024
    Inventors: Dauu TAKEDA, Hideaki MATSUMURA, Tsuyoshi SAEKI, Norio SAKURAI, Hiromasa TSUTSUMI, Shota ASADA, Taiji MARUYAMA
  • Publication number: 20240109332
    Abstract: A recording apparatus includes a conveyance unit that conveys a recording medium in a first direction toward a recording head for ejecting a liquid, a tank including a containing chamber containing the liquid to be supplied to the recording head, and an injection port through which the liquid is injected into the containing chamber, the tank being disposed downstream of the conveyance unit in the first direction, a rotatable lever that holds a tank cap for closing the injection port, and a cover that rotates about a rotation shaft between an open position for exposing the lever and a closed position for covering the lever, the rotation shaft being disposed upstream of the conveyance unit in the first direction. The cover includes a sliding portion that is provided on a surface facing the lever and comes into contact with the lever while the cover is rotating toward the closed position.
    Type: Application
    Filed: December 26, 2023
    Publication date: April 4, 2024
    Inventors: Taiji Maruyama, Koya Iwakura, Hideaki Matsumura, Tetsu Hamano, Nobuhiro Toki, Daiju Takeda, Fumie Kameyama, Koki Shimada, Shota Asada, Ken Takenaga, Yusuke Tanaka, Yuta Araki, Atsushi Matsuyama, Yusuke Naratani, Kousuke Tanaka
  • Publication number: 20240109333
    Abstract: A liquid storage container includes a storage portion configured to store liquid, an opening portion provided on a first surface and configured to allow injection of the liquid into the storage portion, a receiving portion consisting of the first surface and a wall disposed around the opening portion on the first surface, and a liquid holding unit configured to hold the liquid guided by a guiding portion from the liquid receiving portion to outside of the liquid receiving portion. The liquid holding unit includes a second surface different from the first surface of the liquid storage container and a flexible member.
    Type: Application
    Filed: September 27, 2023
    Publication date: April 4, 2024
    Inventors: TAIJI MARUYAMA, HIDEAKI MATSUMURA, TSUYOSHI SAEKI, NORIO SAKURAI, DAIJU TAKEDA, SHOTA ASADA, HIROMASA TSUTSUMI
  • Patent number: 11932021
    Abstract: A recording apparatus includes a tank including a chamber configured to store liquid to be supplied to a recording head that ejects the liquid and a filling port from which the liquid is injected into the chamber, and an injection auxiliary member configured to assist injecting of the liquid into the chamber from the filling port, the injection auxiliary member including a first and a second flow channels each defined by a first or a second upper end portion that opens toward outside of the tank and a first or a second lower end portion that opens toward inside of the tank, wherein the second flow channel has an expansion portion arranged in a middle portion between the second upper end portion and the second lower end portion and configured to form a step to expand a cross-sectional area.
    Type: Grant
    Filed: December 20, 2022
    Date of Patent: March 19, 2024
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yusuke Naratani, Koya Iwakura, Hideaki Matsumura, Tetsu Hamano, Nobuhiro Toki, Daiju Takeda, Fumie Kameyama, Koki Shimada, Shota Asada, Ken Takenaga, Yusuke Tanaka, Yuta Araki, Taiji Maruyama, Atsushi Matsuyama, Kousuke Tanaka, Toshimitsu Takahashi, Nanae Uchinuno
  • Publication number: 20240042769
    Abstract: A printing apparatus includes a liquid storing container including a storage chamber configured to store a liquid supplied to a printing unit that prints an image by discharging the liquid, an outlet portion of the liquid, and a channel configured to connect the storage chamber and the outlet portion. The liquid storing container includes a first side portion on a side of a print region where printing is executed by the printing unit, and a second side portion on an opposite side of the first side portion, and the channel is formed in the second side portion.
    Type: Application
    Filed: October 11, 2023
    Publication date: February 8, 2024
    Inventors: Koki SHIMADA, Nobuhiro TOKI, Daiju TAKEDA, Fumie KAMEYAMA, Shota ASADA, Ken TAKENAGA, Yusuke TANAKA, Yuta ARAKI, Taiji MARUYAMA, Atsushi MATSUYAMA, Yusuke NARATANI, Kousuke TANAKA, Koya IWAKURA, Hideaki MATSUMURA, Tetsu HAMANO
  • Publication number: 20240017550
    Abstract: A liquid storage container includes: a discharge port member including a discharge port through which liquid stored in a storage portion is discharged and a coupling portion in which a male thread portion is arranged on the outside; and a cover portion including a female thread portion on the inside and configured to be attachable to the discharge port member, the female thread portion configured to be screwed to the male thread portion, in which the male thread portion is discontinuous in the coupling portion.
    Type: Application
    Filed: August 3, 2023
    Publication date: January 18, 2024
    Inventors: Kyosuke NAGAOKA, Ryoji INOUE, Noriyasu NAGAI, Kenta UDAGAWA, Hideaki MATSUMURA, Taiji MARUYAMA
  • Publication number: 20230415504
    Abstract: 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: Application
    Filed: June 21, 2023
    Publication date: December 28, 2023
    Inventors: TAKASHI ABE, YASUYUKI TAKANAKA, NORIO SAKURAI, ATSUSHI KOHNOTOH, TAIJI MARUYAMA, YUSUKE NARATANI, SHUHEI YAMAGUCHI, KOUSUKE TANAKA
  • Patent number: 11833835
    Abstract: A recording apparatus includes a conveyance unit that conveys a recording medium in a first direction toward a recording head for ejecting a liquid, a tank including a containing chamber containing the liquid to be supplied to the recording head, and an injection port through which the liquid is injected into the containing chamber, the tank being disposed downstream of the conveyance unit in the first direction, a rotatable lever that holds a tank cap for closing the injection port, and a cover that rotates about a rotation shaft between an open position for exposing the lever and a closed position for covering the lever, the rotation shaft being disposed upstream of the conveyance unit in the first direction. The cover includes a sliding portion that is provided on a surface facing the lever and comes into contact with the lever while the cover is rotating toward the closed position.
    Type: Grant
    Filed: March 24, 2023
    Date of Patent: December 5, 2023
    Assignee: Canon Kabushiki Kaisha
    Inventors: Taiji Maruyama, Koya Iwakura, Hideaki Matsumura, Tetsu Hamano, Nobuhiro Toki, Daiju Takeda, Fumie Kameyama, Koki Shimada, Shota Asada, Ken Takenaga, Yusuke Tanaka, Yuta Araki, Atsushi Matsuyama, Yusuke Naratani, Kousuke Tanaka
  • Patent number: 11827024
    Abstract: A printing apparatus includes a liquid storing container including a storage chamber configured to store a liquid supplied to a printing unit that prints an image by discharging the liquid, an outlet portion of the liquid, and a channel configured to connect the storage chamber and the outlet portion. The liquid storing container includes a first side portion on a side of a print region where printing is executed by the printing unit, and a second side portion on an opposite side of the first side portion, and the channel is formed in the second side portion.
    Type: Grant
    Filed: July 14, 2021
    Date of Patent: November 28, 2023
    Assignee: Canon Kabushiki Kaisha
    Inventors: Koki Shimada, Nobuhiro Toki, Daiju Takeda, Fumie Kameyama, Shota Asada, Ken Takenaga, Yusuke Tanaka, Yuta Araki, Taiji Maruyama, Atsushi Matsuyama, Yusuke Naratani, Kousuke Tanaka, Koya Iwakura, Hideaki Matsumura, Tetsu Hamano
  • Publication number: 20230322004
    Abstract: 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: Application
    Filed: March 30, 2023
    Publication date: October 12, 2023
    Inventors: KOUSUKE TANAKA, NORIO SAKURAI, ATSUSHI KOHNOTOH, TAKASHI ABE, YASUYUKI TAKANAKA, TAIJI MARUYAMA, YUSUKE NARATANI, SHUHEI YAMAGUCHI, SHIMPEI FUJISAKI
  • Patent number: 11766872
    Abstract: A print head includes a nozzle array comprising a plurality of nozzles, and a negative pressure generating portion configured to apply a negative pressure to the nozzle array. A tank includes a storage portion and an air communication port. A tube connects the print head and the tank and supply the liquid from the tank to the print head. A highest position of a liquid level in the tank in the vertical direction is higher than a position of the nozzle array, and an absolute value of a water head difference caused by a difference between the highest position of the liquid level in the tank and the position of the nozzle array is not larger than an absolute value of a negative pressure generated by the negative pressure generating portion.
    Type: Grant
    Filed: June 24, 2021
    Date of Patent: September 26, 2023
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hideaki Matsumura, Daiju Takeda, Tetsu Hamano, Nobuhiro Toki, Fumie Kameyama, Koki Shimada, Shota Asada, Ken Takenaga, Yusuke Tanaka, Yuta Araki, Taiji Maruyama, Atsushi Matsuyama, Yusuke Naratani, Kousuke Tanaka, Koya Iwakura
  • Patent number: 11760101
    Abstract: A liquid storage container includes: a discharge port member including a discharge port through which liquid stored in a storage portion is discharged and a coupling portion in which a male thread portion is arranged on the outside; and a cover portion including a female thread portion on the inside and configured to be attachable to the discharge port member, the female thread portion configured to be screwed to the male thread portion, in which the male thread portion is discontinuous in the coupling portion.
    Type: Grant
    Filed: July 8, 2021
    Date of Patent: September 19, 2023
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kyosuke Nagaoka, Ryoji Inoue, Noriyasu Nagai, Kenta Udagawa, Hideaki Matsumura, Taiji Maruyama
  • Publication number: 20230278345
    Abstract: A printing apparatus includes an ink tank and a flow channel member. The tank includes an ink chamber that stores ink, an injection port through which the ink is injected into the chamber, and a first shape portion formed near the injection port. The flow channel member is configured to be disposed inside the injection port and form a channel through which the ink is injected into the chamber. The ink is injected to the chamber from an ink supply container which includes a second shape portion formed near an outlet port of the container and configured to engage the first shape portion. The flow channel member is displaceable in a direction intersecting an inserting direction of inserting the outlet port into the injection port. The container is fixed to the tank by engagement between the first and second shape portions.
    Type: Application
    Filed: May 10, 2023
    Publication date: September 7, 2023
    Inventor: Taiji Maruyama
  • Patent number: 11712900
    Abstract: Provided is an image recording apparatus including: a carriage configured to support a recording head that ejects a liquid to a recording medium and configured to perform reciprocating motion in the scanning direction; a liquid containing portion configured to contain liquid; a tube configured to connect the recording head and the liquid containing portion to supply liquid from the liquid containing portion to the recording head, the tube including a first section that extends in the scanning direction and a second section that extends in the scanning direction above the first section; and a support portion configured to support the first section and be secured to an apparatus main body, and in the support portion, a rotating member is provided below the second section at a position facing the second section.
    Type: Grant
    Filed: July 26, 2021
    Date of Patent: August 1, 2023
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kousuke Tanaka, Koya Iwakura, Hideaki Matsumura, Tetsu Hamano, Nobuhiro Toki, Daiju Takeda, Fumie Kameyama, Koki Shimada, Shota Asada, Ken Takenaga, Yusuke Tanaka, Yuta Araki, Taiji Maruyama, Atsushi Matsuyama, Yusuke Naratani
  • Publication number: 20230234365
    Abstract: A recording apparatus includes a conveyance unit that conveys a recording medium in a first direction toward a recording head for ejecting a liquid, a tank including a containing chamber containing the liquid to be supplied to the recording head, and an injection port through which the liquid is injected into the containing chamber, the tank being disposed downstream of the conveyance unit in the first direction, a rotatable lever that holds a tank cap for closing the injection port, and a cover that rotates about a rotation shaft between an open position for exposing the lever and a closed position for covering the lever, the rotation shaft being disposed upstream of the conveyance unit in the first direction. The cover includes a sliding portion that is provided on a surface facing the lever and comes into contact with the lever while the cover is rotating toward the closed position.
    Type: Application
    Filed: March 24, 2023
    Publication date: July 27, 2023
    Inventors: Taiji Maruyama, Koya Iwakura, Hideaki Matsumura, Tetsu Hamano, Nobuhiro Toki, Daiju Takeda, Fumie Kameyama, Koki Shimada, Shota Asada, Ken Takenaga, Yusuke Tanaka, Yuta Araki, Atsushi Matsuyama, Yusuke Naratani, Kousuke Tanaka
  • Patent number: 11673405
    Abstract: A printing apparatus includes an ink tank and a flow channel member. The tank includes an ink chamber that stores ink, an injection port through which the ink is injected into the chamber, and a first shape portion formed near the injection port. The flow channel member is configured to be disposed inside the injection port and form a channel through which the ink is injected into the chamber. The ink is injected to the chamber from an ink supply container which includes a second shape portion formed near an outlet port of the container and configured to engage the first shape portion. The flow channel member is displaceable in a direction intersecting an inserting direction of inserting the outlet port into the injection port. The container is fixed to the tank by engagement between the first and second shape portions.
    Type: Grant
    Filed: October 27, 2020
    Date of Patent: June 13, 2023
    Assignee: Canon Kabushiki Kaisha
    Inventor: Taiji Maruyama
  • Publication number: 20230127454
    Abstract: A recording apparatus includes a tank including a chamber configured to store liquid to be supplied to a recording head that ejects the liquid and a filling port from which the liquid is injected into the chamber, and an injection auxiliary member configured to assist injecting of the liquid into the chamber from the filling port, the injection auxiliary member including a first and a second flow channels each defined by a first or a second upper end portion that opens toward outside of the tank and a first or a second lower end portion that opens toward inside of the tank, wherein the second flow channel has an expansion portion arranged in a middle portion between the second upper end portion and the second lower end portion and configured to form a step to expand a cross-sectional area.
    Type: Application
    Filed: December 20, 2022
    Publication date: April 27, 2023
    Inventors: Yusuke Naratani, Koya Iwakura, Hideaki Matsumura, Tetsu Hamano, Nobuhiro Toki, Daiju Takeda, Fumie Kameyama, Koki Shimada, Shota Asada, Ken Takenaga, Yusuke Tanaka, Yuta Araki, Taiji Maruyama, Atsushi Matsuyama, Kousuke Tanaka, Toshimitsu Takahashi, Nanae Uchinuno
  • Patent number: 11633954
    Abstract: A recording apparatus includes a conveyance unit that conveys a recording medium in a first direction toward a recording head for ejecting a liquid, a tank including a containing chamber containing the liquid to be supplied to the recording head, and an injection port through which the liquid is injected into the containing chamber, the tank being disposed downstream of the conveyance unit in the first direction, a rotatable lever that holds a tank cap for closing the injection port, and a cover that rotates about a rotation shaft between an open position for exposing the lever and a closed position for covering the lever, the rotation shaft being disposed upstream of the conveyance unit in the first direction. The cover includes a sliding portion that is provided on a surface facing the lever and comes into contact with the lever while the cover is rotating toward the closed position.
    Type: Grant
    Filed: July 22, 2021
    Date of Patent: April 25, 2023
    Assignee: Canon Kabushiki Kaisha
    Inventors: Taiji Maruyama, Koya Iwakura, Hideaki Matsumura, Tetsu Hamano, Nobuhiro Toki, Daiju Takeda, Fumie Kameyama, Koki Shimada, Shota Asada, Ken Takenaga, Yusuke Tanaka, Yuta Araki, Atsushi Matsuyama, Yusuke Naratani, Kousuke Tanaka
  • Publication number: 20230115030
    Abstract: 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: Application
    Filed: October 10, 2022
    Publication date: April 13, 2023
    Inventors: Taiji Maruyama, Atsushi Kohnotoh, Yasuyuki Takanaka, Norio Sakurai, Takashi Abe, Kousuke Tanaka, Yusuke Naratani, Shuhei Yamaguchi
  • Publication number: 20230094421
    Abstract: A recording apparatus includes a recording head having discharge orifices arranged on a discharge orifice surface, a cap, a wiper, and a moving unit that moves the wiper in a first direction. When the cap covers the discharge orifice surface, a first member is disposed at an inside wall of the cap at a position near a first side of a region having the discharge orifices, and a second member is disposed at another inside wall of the cap at a position near a second side of the region having the discharge orifices. The first side faces in a direction opposite to the first direction and the second side faces in the first direction. In a direction normal to the discharge orifice surface, a distance between the second member and the discharge orifice surface is smaller than a distance between the first member and the discharge orifice surface.
    Type: Application
    Filed: September 22, 2022
    Publication date: March 30, 2023
    Inventors: Hideaki Matsumura, Koya Iwakura, Tetsu Hamano, Nobuhiro Toki, Fumie Kameyama, Koki Shimada, Shota Asada, Ken Takenaga, Yusuke Tanaka, Yuta Araki, Taiji Maruyama, Atsushi Matsuyama, Yusuke Naratani, Kousuke Tanaka, Shimpei Fujisaki, Hiromasa Tsutsumi