Patents by Inventor Fumio Nakazawa

Fumio Nakazawa 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: 20240123737
    Abstract: A liquid discharging apparatus, having a head, a reservoir section including a liquid reservoir chamber and an atmosphere communication path, a liquid flow path connecting the head with the liquid reservoir chamber, a switching assembly to switch states of the atmosphere communication path between a connecting state and a disconnecting state, and a controller, is provided. The controller is configured to control the switching assembly to switch the states of the atmosphere communication path from the connecting state to the disconnecting state; after switching the states of the atmosphere communication path, control the head to discharge the liquid; and after switching the states of the atmosphere communication path, and in response to a predetermined connection condition being satisfied, control the switching assembly to switch the states of the atmosphere communication path from the disconnecting state to the connecting state.
    Type: Application
    Filed: December 20, 2023
    Publication date: April 18, 2024
    Inventors: Fumio NAKAZAWA, Yoshinori OSAKABE, Taichi SHIRONO, Sosuke KUROYANAGI
  • Publication number: 20240100844
    Abstract: A liquid supplying apparatus having a tank with a hole, a reservoir chamber to store a portion of liquid in the tank, and a flow path to store another portion of the liquid in the tank, is provided. The flow path connects the reservoir chamber and the hole. The flow path has a first funnel section to reduce a cross-sectional area of a part of the flow path. The first funnel section is located at a position equal to or higher than a surface of a predetermined maximum amount of the liquid storable in the tank in a usable posture. The first funnel section creates a meniscus with the liquid stored in the tank in an X1-rotated posture, in which the tank is rotated about a first axis by a first angle from the usable posture.
    Type: Application
    Filed: December 8, 2023
    Publication date: March 28, 2024
    Inventors: Yoshinori OSAKABE, Taichi SHIRONO, Fumio NAKAZAWA, Sosuke KUROYANAGI
  • Publication number: 20240066882
    Abstract: There is provided an inkjet recording device including a head, a support member, a storage portion, a valve, an actuator, and a controller. The head includes a nozzle and is configured to eject ink from the nozzle. The support member supports the head. The storage portion storing therein ink. The storage portion has a part positioned above the nozzle. The storage portion has an air communication opening allowing an interior of the storage portion to be communicated with an outside of the storage portion. The valve is movable between an opening position in which the valve opens the air communication opening and a closing position in which the valve closes the air communication opening. The actuator is configured to move the valve. The controller configured to control, while the head is ejecting ink from the nozzle toward a recording medium, the actuator to maintain the valve at the closing position.
    Type: Application
    Filed: November 8, 2023
    Publication date: February 29, 2024
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Fumio NAKAZAWA, Yoshinori OSAKABE, Taichi SHIRONO, Sosuke KUROYANAGI
  • Patent number: 11912040
    Abstract: A replenishing-type liquid storage tank includes a tank body, and a backpressure application member. Liquid is replenishable in the tank body and the tank body is configured to store the liquid therein. The backpressure application member is accommodated in the tank body to apply backpressure to the liquid stored in the tank body. The backpressure application member has a portion positioned equal to or higher than a liquid level of a maximum tolerable amount of the liquid storable in the tank body.
    Type: Grant
    Filed: December 27, 2021
    Date of Patent: February 27, 2024
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Fumio Nakazawa, Tsuyoshi Kuwayama, Yoshinori Osakabe
  • Patent number: 11912039
    Abstract: A liquid discharging apparatus, having a head, a reservoir section including a liquid reservoir chamber and an atmosphere communication path, a liquid flow path connecting the head with the liquid reservoir chamber, a switching assembly to switch states of the atmosphere communication path between a connecting state and a disconnecting state, and a controller, is provided. The controller is configured to control the switching assembly to switch the states of the atmosphere communication path from the connecting state to the disconnecting state; after switching the states of the atmosphere communication path, control the head to discharge the liquid; and after switching the states of the atmosphere communication path, and in response to a predetermined connection condition being satisfied, control the switching assembly to switch the states of the atmosphere communication path from the disconnecting state to the connecting state.
    Type: Grant
    Filed: September 22, 2021
    Date of Patent: February 27, 2024
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Fumio Nakazawa, Yoshinori Osakabe, Taichi Shirono, Sosuke Kuroyanagi
  • Patent number: 11904613
    Abstract: There is provided an inkjet recording device including a head, a support member, a storage portion, a valve, an actuator, and a controller. The head includes a nozzle and is configured to eject ink from the nozzle. The support member supports the head. The storage portion storing therein ink. The storage portion has a part positioned above the nozzle. The storage portion has an air communication opening allowing an interior of the storage portion to be communicated with an outside of the storage portion. The valve is movable between an opening position in which the valve opens the air communication opening and a closing position in which the valve closes the air communication opening. The actuator is configured to move the valve. The controller configured to control, while the head is ejecting ink from the nozzle toward a recording medium, the actuator to maintain the valve at the closing position.
    Type: Grant
    Filed: March 31, 2021
    Date of Patent: February 20, 2024
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Fumio Nakazawa, Yoshinori Osakabe, Taichi Shirono, Sosuke Kuroyanagi
  • Patent number: 11897267
    Abstract: A liquid cartridge includes: a cartridge casing having a liquid storage chamber; a first wall; a second wall; and an air communication passage. The first wall is positioned upward relative to the liquid storage chamber. The second wall is positioned upward relative to the first wall. The air communication passage has a first communication hole in communication with the liquid storage chamber and a communication opening open to an atmosphere. The air communication passage includes: an air chamber defined by the first wall and the second wall and in communication with the liquid storage chamber through the first communication hole; a second communication hole formed in the second wall; and a labyrinth path. The labyrinth path is positioned upward relative to the air chamber, and has one end in communication with the second communication hole and another end in communication with the communication opening.
    Type: Grant
    Filed: July 30, 2021
    Date of Patent: February 13, 2024
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Tetsuro Kobayashi, Hiroaki Takahashi, Takahiro Miyao, Fumio Nakazawa, Naoya Okazaki, Akihito Ono, Kosuke Nukui, Hiroshi Taira, Toyonori Sasaki
  • Patent number: 11890875
    Abstract: A liquid cartridge configured to be inserted into a cartridge-attachment section in an insertion direction includes a casing, and a lever supported by the casing. The lever is pivotable about a pivot axis between a first position and a second position. The lever includes a light-blocking portion configured to block or attenuate light traveling in a widthwise direction crossing the insertion direction and a gravitational direction, and a force-receiving portion positioned closer to a front wall of the casing than the light-blocking portion is to the front wall in the insertion direction. The light-blocking portion is positioned lower at the second position than at the first position. The pivot axis is positioned frontward of the light-blocking portion and rearward of the force-receiving portion in the insertion direction. The lever pivots from the second position to the first position upon application of an external force to the force-receiving portion.
    Type: Grant
    Filed: May 24, 2022
    Date of Patent: February 6, 2024
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Hiroaki Takahashi, Takahiro Miyao, Akihito Ono, Tetsuro Kobayashi, Fumio Nakazawa, Kosuke Nukui
  • Publication number: 20240025176
    Abstract: There is provided a liquid discharge apparatus including: a head including a nozzle surface on which a nozzle is opened; a carriage holding the head and configured to move in the scanning direction; a cap configured to contact the nozzle surface to cover the nozzle in a case that the carriage is located in a first position; and a contact member. The head includes a contact part configured to make contact with the contact member. In a case that a load of a vertical component of the nozzle surface is applied to the head by the cap contacting the nozzle surface, the contact member is configured to make contact with the contact part of the head to receive the load applied to the head.
    Type: Application
    Filed: July 19, 2023
    Publication date: January 25, 2024
    Inventors: Yoshinori OSAKABE, Akihiro SAKAKIBARA, Yuta ARAKAWA, Taichi SHIRONO, Fumio NAKAZAWA
  • Patent number: 11878533
    Abstract: A liquid supplying apparatus having a tank with a hole, a reservoir chamber to store a portion of liquid in the tank, and a flow path to store another portion of the liquid in the tank, is provided. The flow path connects the reservoir chamber and the hole. The flow path has a first funnel section to reduce a cross-sectional area of a part of the flow path. The first funnel section is located at a position equal to or higher than a surface of a predetermined maximum amount of the liquid storable in the tank in a usable posture. The first funnel section creates a meniscus with the liquid stored in the tank in an X1-rotated posture, in which the tank is rotated about a first axis by a first angle from the usable posture.
    Type: Grant
    Filed: September 29, 2021
    Date of Patent: January 23, 2024
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Yoshinori Osakabe, Taichi Shirono, Fumio Nakazawa, Sosuke Kuroyanagi
  • Patent number: 11865847
    Abstract: There is provided a liquid discharge apparatus including: a head having a nozzle; a tank; a gas channel; a valve unit; a memory; and a controller. The controller is configured to execute: making of the valve unit to be in an open state, under a condition that a count value indicating an amount of a liquid discharged from the nozzle has reached an opening threshold value ?V. The opening threshold value ?V is represented by: ?V?(Vtmax?Vi)×Pm/(P?Pm). Note that Vtmax represents a volume of the tank, Vi represents the maximum amount of the liquid storable in the tank, P represents an atmospheric pressure, and Pm represents a meniscus-withstanding pressure of the liquid formed in the nozzle.
    Type: Grant
    Filed: March 9, 2022
    Date of Patent: January 9, 2024
    Inventors: Fumio Nakazawa, Yoshinori Osakabe, Taichi Shirono, Sosuke Kuroyanagi
  • Publication number: 20230356523
    Abstract: An inkjet recording device includes: a head including a nozzle configured to eject ink toward a recording medium; a storage portion storing therein ink and formed with an air communication opening allowing an interior of the storage portion to be communicated with an outside thereof; a valve movable between an opening position opening the air communication opening and a closing position closing the air communication opening; an actuator configured to move the valve; a state sensor configured to output a detection signal based on the state of the inkjet recording device; and a controller configured to perform: (a) determining, on the basis of the detection signal, whether the inkjet recording device has an abnormality; and (b) controlling, in a case where determination is made in (a) that the inkjet recording device has an abnormality, the actuator to move the valve to the closing position from the opening position.
    Type: Application
    Filed: April 10, 2023
    Publication date: November 9, 2023
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Yoshinori OSAKABE, Fumio NAKAZAWA, Taichi SHIRONO, Sosuke KUROYANAGI
  • Patent number: 11780235
    Abstract: A replenishing-type liquid storage tank includes a tank body, and a backpressure application member. Liquid is replenishable in the tank body and the tank body is configured to store the liquid therein. The backpressure application member is accommodated in the tank body to apply backpressure to the liquid stored in the tank body. The backpressure application member has a lower end positioned at a height equal to or lower than a liquid level of a minimum amount of liquid required to be stored in the tank body for enabling the backpressure application member to apply backpressure to the liquid stored in the tank body.
    Type: Grant
    Filed: December 27, 2021
    Date of Patent: October 10, 2023
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Fumio Nakazawa, Tsuyoshi Kuwayama, Yoshinori Osakabe
  • Patent number: 11697288
    Abstract: A liquid supplying apparatus, having a reservoir section including a reservoir chamber, and a communication section connecting the reservoir chamber and a hole, is provided. The communication section has a first wall and a second wall, a first buffer space, and a second buffer space. The first buffer space and the second buffer space store the liquid flowing on the first wall and the second wall, respectively, in the liquid supplying apparatus being in the first rotated posture. The hole is located at an upper position with respect to a surface of a predetermined maximum amount of the liquid storable in the reservoir chamber in the liquid supplying apparatus being in a usable posture. The hole is open neither to the first buffer space nor the second buffer space. The hole is located in neither the first wall nor the second wall.
    Type: Grant
    Filed: September 29, 2021
    Date of Patent: July 11, 2023
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Yoshinori Osakabe, Taichi Shirono, Fumio Nakazawa, Sosuke Kuroyanagi
  • Patent number: 11654675
    Abstract: An inkjet recording device includes: a head including a nozzle configured to eject ink toward a recording medium; a storage portion storing therein ink and formed with an air communication opening allowing an interior of the storage portion to be communicated with an outside thereof; a valve movable between an opening position opening the air communication opening and a closing position closing the air communication opening; an actuator configured to move the valve; a state sensor configured to output a detection signal based on the state of the inkjet recording device; and a controller configured to perform: (a) determining, on the basis of the detection signal, whether the inkjet recording device has an abnormality; and (b) controlling, in a case where determination is made in (a) that the inkjet recording device has an abnormality, the actuator to move the valve to the closing position from the opening position.
    Type: Grant
    Filed: March 24, 2021
    Date of Patent: May 23, 2023
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Yoshinori Osakabe, Fumio Nakazawa, Taichi Shirono, Sosuke Kuroyanagi
  • Patent number: 11639059
    Abstract: A liquid cartridge includes: a cartridge casing having a liquid storage chamber; a first wall; a second wall; and an air communication passage. The first wall is positioned upward relative to the liquid storage chamber. The second wall is positioned upward relative to the first wall. The air communication passage has a first communication hole in communication with the liquid storage chamber and a communication opening open to an atmosphere. The air communication passage includes: an air chamber defined by the first wall and the second wall and in communication with the liquid storage chamber through the first communication hole; a second communication hole formed in the second wall; and a labyrinth path. The labyrinth path is positioned upward relative to the air chamber, and has one end in communication with the second communication hole and another end in communication with the communication opening.
    Type: Grant
    Filed: July 30, 2021
    Date of Patent: May 2, 2023
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Tetsuro Kobayashi, Hiroaki Takahashi, Takahiro Miyao, Fumio Nakazawa, Naoya Okazaki, Akihito Ono, Kosuke Nukui, Hiroshi Taira, Toyonori Sasaki
  • Patent number: 11590758
    Abstract: A printing-fluid cartridge is inserted into a prescribed insertion space of a cartridge-attachment section in an insertion direction crossing a gravitational direction to be attached thereto in an attached posture. The printing-fluid cartridge includes: a housing including a storage chamber, a supply portion having a supply hole, an electrical interface disposed at an upper surface of the housing, and an interfering surface. The interfering surface is positioned upward of the storage chamber and extends in a widthwise direction of the housing. The interfering surface is positioned downward and frontward relative to the electrical interface and is configured to abut against a projection provided at another insertion space different from the prescribed insertion space of the cartridge-attachment section during an insertion of the printing-fluid cartridge into the another insertion space.
    Type: Grant
    Filed: June 3, 2021
    Date of Patent: February 28, 2023
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Kosuke Nukui, Fumio Nakazawa, Suguru Tomoguchi, Hiroaki Takahashi, Akihito Ono, Tetsuro Kobayashi, Takahiro Miyao
  • Patent number: 11584133
    Abstract: An ink tank includes: a first liquid storage chamber; a second liquid storage chamber communicating with the first liquid storage chamber through a communication passage; an injector having an opening supplying liquid to the first liquid storage chamber; a cap movable between an open position and a closed position with respect to the injector; a slide member which is inserted so as to be vertically movable with respect to the opening of the injector, the slide member being moved downward by the cap in the closed position; a valve body which is vertically movably inserted in the communication passage and includes a first sealing member opening the communication passage by moving downward together with the slide member moved downward by the cap in the closed position; and an urging member always urging the valve body upward.
    Type: Grant
    Filed: September 14, 2021
    Date of Patent: February 21, 2023
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Fumio Nakazawa, Yoshinori Osakabe, Naoya Okazaki, Satoru Oki, Masahiro Hayashi, Nanami Ashida
  • Publication number: 20230022407
    Abstract: A liquid ejecting device includes a head having a nozzle configured to eject liquid, a container that is connected with the head and is configured to store the liquid, a communication section configured to communicate an internal space of the container with atmosphere, and a liquid reservoir configured to store the liquid and to be removably attached to the container. An internal space of the liquid reservoir is communicated with the internal space of the container through a liquid flow path and a gas flow path in an attached state where the liquid reservoir is attached to the container.
    Type: Application
    Filed: July 26, 2022
    Publication date: January 26, 2023
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Yoshinori OSAKABE, Taichi SHIRONO, Fumio NAKAZAWA, Sosuke KUROYANAGI
  • Publication number: 20230018534
    Abstract: An inkjet recording device includes a first tray for supporting sheets, a storage body for storing ink, a head for ejecting ink, a platen positioned between the head and the first tray, and a first guide member. The platen is configured to support a first surface of the sheet conveyed rearward at a position below the head. The first guide member is positioned frontward of the head and has a first curved surface configured to guide the first surface of the sheet conveyed from the first tray toward the platen. The first guide member has a portion arranged in alignment with the storage body in a widthwise direction perpendicular to an up-down direction and a front-rear direction. The first guide member has a portion positioned at the same height as the storage body in the up-down direction.
    Type: Application
    Filed: September 26, 2022
    Publication date: January 19, 2023
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Fumio NAKAZAWA, Yoshinori OSAKABE, Hirotaka AOKI, Takashi YOSHIKAWA