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).

  • Patent number: 11351792
    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: September 9, 2020
    Date of Patent: June 7, 2022
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Hiroaki Takahashi, Takahiro Miyao, Akihito Ono, Tetsuro Kobayashi, Fumio Nakazawa, Kosuke Nukui
  • Publication number: 20220118768
    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: Application
    Filed: December 27, 2021
    Publication date: April 21, 2022
    Inventors: Fumio Nakazawa, Tsuyoshi Kuwayama, Yoshinori Osakabe
  • Publication number: 20220118769
    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: Application
    Filed: December 27, 2021
    Publication date: April 21, 2022
    Inventors: Fumio Nakazawa, Tsuyoshi Kuwayama, Yoshinori Osakabe
  • Publication number: 20220097395
    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: September 29, 2021
    Publication date: March 31, 2022
    Inventors: Yoshinori OSAKABE, Taichi SHIRONO, Fumio NAKAZAWA, Sosuke KUROYANAGI
  • Publication number: 20220097387
    Abstract: A liquid discharging apparatus, having a head with a nozzle surface, a reservoir section having a liquid reservoir chamber and a first atmosphere communication path, a liquid flow path connecting the head with the liquid reservoir chamber, a first switching assembly to switch states of the first atmosphere communication path between a connecting state and a disconnecting state, a cap having a body and a second atmosphere communication path, a movable assembly to move the cap between a covering position and a separated position, and a controller, is provided. The controller is configured to control the head to discharge the liquid, and after discharging the liquid from the head, control the movable assembly to move the cap from the separated position to the covering position. With the cap being located at the covering position, the first atmosphere communication path is placed in the connecting state.
    Type: Application
    Filed: September 22, 2021
    Publication date: March 31, 2022
    Inventors: Fumio NAKAZAWA, Yoshinori OSAKABE, Taichi SHIRONO, Sosuke KUROYANAGI
  • Publication number: 20220097380
    Abstract: A liquid discharging apparatus, having a head with a nozzle surface, a reservoir section having a liquid reservoir chamber and a first atmosphere communication path, a liquid flow path connecting the head with the liquid reservoir chamber, a first switching assembly to switch states of the first atmosphere communication path between a connecting state and a disconnecting state, a cap having a body and a second atmosphere communication path, a movable assembly to move the cap between a covering position and a separated position, and a controller, is provided. The controller is configured to control the head to discharge the liquid, and after discharging the liquid from the head, control the movable assembly to move the cap from the separated position to the covering position. With the cap being located at the covering position, the first atmosphere communication path is placed in the disconnecting state.
    Type: Application
    Filed: September 22, 2021
    Publication date: March 31, 2022
    Inventors: Fumio NAKAZAWA, Yoshinori OSAKABE, Taichi SHIRONO, Sosuke KUROYANAGI
  • Publication number: 20220097391
    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: Application
    Filed: September 14, 2021
    Publication date: March 31, 2022
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Fumio NAKAZAWA, Yoshinori OSAKABE, Naoya OKAZAKI, Satoru OKI, Masahiro HAYASHI, Nanami ASHIDA
  • Publication number: 20220097386
    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, a switching assembly, and a controller to control the switching assembly in a disconnecting process and the head in a discharging process after the disconnecting process, is provided. A volume of an air portion in the reservoir section is controlled to satisfy formulas: Vb=(Po+?P)*?V/?P and ?P?Pm. Po represents one atmosphere. AV represents a change in the volume of the air portion due to a change in a volume of the liquid caused by discharging a predetermined amount of liquid in the discharging process. AP represents a change in pressure of the air portion according to the change in the volume of the liquid in the discharging process. Pm represents a pressure resistance of menisci formed with the liquid in the nozzles.
    Type: Application
    Filed: September 22, 2021
    Publication date: March 31, 2022
    Inventors: Fumio NAKAZAWA, Yoshinori OSAKABE, Taichi SHIRONO, Sosuke KUROYANAGI
  • Publication number: 20220097406
    Abstract: A liquid discharging apparatus, having a head, reservoir section, a liquid flow path, a lid, a valve, a switching assembly, and a controller, is provided. The reservoir section has a liquid reservoir chamber, an injection port, and an atmosphere communication path. The liquid flow path connects the head and the liquid reservoir chamber. The lid opens and closes the injection port. The switching assembly switches states of the valve between an opening state, in which the valve opens the atmosphere communication path, and a closing state, in which the valve closes the atmosphere communication path. The controller is configured to control the valve through the switching assembly to close the atmosphere communication path, control the head to discharge the liquid after closing the atmosphere communication path, and control the valve through the switching assembly to open the atmosphere communication path before the liquid is injected through the injection port.
    Type: Application
    Filed: September 29, 2021
    Publication date: March 31, 2022
    Inventors: Taichi Shirono, Yoshinori OSAKABE, Fumio NAKAZAWA, Sosuke KUROYANAGI
  • Publication number: 20220097407
    Abstract: A liquid discharging apparatus, having a head, a reservoir section, a valve, a switching assembly, and a controller, is provided. The reservoir section has a liquid reservoir chamber, an air chamber, an injection port, and an atmosphere communication path. The switching assembly switches states of the valve between an opening state, in which the valve opens the atmosphere communication path, and a closing state, in which the valve closes the atmosphere communication path. The controller is configured to control the valve through the switching assembly to close the atmosphere communication path, control the head to discharge the liquid after closing the atmosphere communication path, and control the valve through the switching assembly to close the atmosphere communication path before the liquid is injected through the injection port.
    Type: Application
    Filed: September 29, 2021
    Publication date: March 31, 2022
    Inventors: Taichi SHIRONO, Yoshinori OSAKABE, Fumio NAKAZAWA, Sosuke KUROYANAGI
  • Publication number: 20220097401
    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: Application
    Filed: September 29, 2021
    Publication date: March 31, 2022
    Inventors: Yoshinori OSAKABE, Taichi SHIRONO, Fumio NAKAZAWA, Sosuke KUROYANAGI
  • Publication number: 20220097400
    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: September 22, 2021
    Publication date: March 31, 2022
    Inventors: Fumio NAKAZAWA, Yoshinori OSAKABE, Taichi SHIRONO, Sosuke KUROYANAGI
  • Patent number: 11285727
    Abstract: A liquid cartridge includes: a housing having a storage chamber; a liquid passage in communication with the storage chamber; a circuit board; a deformable member; and a movable surface. The liquid passage extends in a first lateral direction from the housing when the housing is in an operational posture. The circuit board is positioned higher than the storage chamber in a vertical direction perpendicular to the first lateral direction and vertically movable relative to the housing. The deformable member is positioned higher than the storage chamber and is lower than the circuit board. The deformable member is deformable vertically relative to the housing. The circuit board is movable vertically in accordance with deformation of the deformable member. The movable surface is positioned further in a second lateral direction opposite the first lateral direction than the circuit board. The movable surface faces upward and is vertically movable relative to the housing.
    Type: Grant
    Filed: January 14, 2021
    Date of Patent: March 29, 2022
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Kosuke Nukui, Akihito Ono, Fumio Nakazawa, Tetsuro Kobayashi
  • Publication number: 20220016897
    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: Application
    Filed: July 30, 2021
    Publication date: January 20, 2022
    Applicant: 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: 11225084
    Abstract: A replenishing-type liquid storage tank includes a tank body, a backpressure application member, and upper limit indicator set in the tank body. Liquid is replenishable in the tank body and the tank body is configured to store the liquid therein. The backpressure application member is made from a material capable of absorbing liquid and is accommodated in the tank body to apply backpressure to the liquid stored in the tank body. The upper limit indicator is indicative of a liquid level of a maximum tolerable amount of the liquid that can be stored in the tank body. The backpressure application member has a portion positioned higher than the upper limit indicator.
    Type: Grant
    Filed: February 28, 2020
    Date of Patent: January 18, 2022
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Fumio Nakazawa, Tsuyoshi Kuwayama, Yoshinori Osakabe
  • Publication number: 20210394519
    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: Application
    Filed: June 3, 2021
    Publication date: December 23, 2021
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Kosuke NUKUI, Fumio NAKAZAWA, Suguru TOMOGUCHI, Hiroaki TAKAHASHI, Akihito ONO, Tetsuro KOBAYASHI, Takahiro MIYAO
  • Publication number: 20210300043
    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: March 31, 2021
    Publication date: September 30, 2021
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Fumio NAKAZAWA, Yoshinori OSAKABE, Taichi SHIRONO, Sosuke KUROYANGI
  • Publication number: 20210300020
    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: March 24, 2021
    Publication date: September 30, 2021
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Yoshinori OSAKABE, Fumio NAKAZAWA, Taichi SHIRONO, Sosuke KUROYANAGI
  • Publication number: 20210300093
    Abstract: There is provided an ink-jet printer, including: a tray; a recording section including a carriage and a head; a reservoir; a tube; a platen; a first guide member arranged at a front side of the recording section in a front-rear direction and having a first curved surface configured to guide a first surface of the sheet; a discharge section configured to discharge the sheet from a rear side toward the front side in the front-rear direction, the discharge section being arranged at the rear side of the recording section; a second guide member arranged at the rear side of the recording section and having a second curved surface configured to guide the first surface of the sheet; and a loading section configured to load the sheet discharged from the discharge section thereon. The loading section includes an inclined portion at the rear side of the recording section, the inclined portion being inclined upward toward the front side of the discharge section.
    Type: Application
    Filed: March 16, 2021
    Publication date: September 30, 2021
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Hikaru TAMURA, Tsuyoshi KUWAYAMA, Fumio NAKAZAWA, Yoshinori OSAKABE, Hirotaka AOKI
  • Patent number: 11077669
    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: November 13, 2019
    Date of Patent: August 3, 2021
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Tetsuro Kobayashi, Hiroaki Takahashi, Takahiro Miyao, Fumio Nakazawa, Naoya Okazaki, Akihito Ono, Kosuke Nukui, Hiroshi Taira, Toyonori Sasaki