Patents by Inventor Kazutoshi Nakamura

Kazutoshi Nakamura 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: 11342812
    Abstract: In an aspect of the motor of the present invention, the motor includes a shaft centered on a center axis extending in a predetermined direction, and a stator located radially outside of the shaft. The stator has a coil wound around the stator. The motor further includes a housing member having a substantially cylindrical shape with a bottom, where the housing member accommodates substantially the entire stator, and supports the shaft, a cooling medium with which the housing member is filled, where the stator and the coil is immersed in the cooling medium, and a rotor that rotates radially outside of the housing member with the center axis of the shaft as a rotation center.
    Type: Grant
    Filed: September 28, 2018
    Date of Patent: May 24, 2022
    Assignee: NIDEC CORPORATION
    Inventors: Yoshinobu Nakamura, Takaaki Bando, Daisuke Ogasawara, Tsutomu Furukawa, Kazutoshi Matsuda
  • Publication number: 20220155720
    Abstract: An image forming apparatus includes a main casing, a drum cartridge and a developing cartridge. The drum cartridge may include a first handle positioned at a first end of a frame of the drum cartridge. The developing cartridge may include a second handle positioned at a first end of a developing casing the developing cartridge. The main casing may include a first edge surface in the axial direction and a second edge surface opposite the first edge surface in the axial direction. The second handle may extend farther from the second edge surface than the first handle extends from the second edge surface in the axial direction in a state where the drum cartridge and the developing cartridge are attached to the main casing.
    Type: Application
    Filed: February 2, 2022
    Publication date: May 19, 2022
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Kazutoshi NAKAMURA, Yasuo FUKAMACHI, Masaaki FURUKAWA
  • Publication number: 20220146976
    Abstract: A printer includes an image forming unit configured to form an image on a sheet by an electrophotographic method, and a recording unit configured to record an image on a sheet by an inkjet method. An image recording position of the recording unit is located above an image forming position of the image forming unit.
    Type: Application
    Filed: January 26, 2022
    Publication date: May 12, 2022
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Hiroyuki SHINGAI, Shohei ICHIKAWA, Kazutoshi NAKAMURA, Shota SHINOYA
  • Patent number: 11249438
    Abstract: An image forming apparatus includes a main casing, a drum cartridge and a developing cartridge. The drum cartridge may include a first handle positioned at a first end of a frame of the drum cartridge. The developing cartridge may include a second handle positioned at a first end of a developing casing the developing cartridge. The main casing may include a first edge surface in the axial direction and a second edge surface opposite the first edge surface in the axial direction. The second handle may extend farther from the second edge surface than the first handle extends from the second edge surface in the axial direction in a state where the drum cartridge and the developing cartridge are attached to the main casing.
    Type: Grant
    Filed: December 10, 2020
    Date of Patent: February 15, 2022
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Kazutoshi Nakamura, Yasuo Fukamachi, Masaaki Furukawa
  • Publication number: 20220011719
    Abstract: An image forming apparatus includes: a main body housing; a developing cartridge attachable to and detachable from the main body housing; a drum cartridge attachable to and detachable from the main body housing; and a developing guide for guiding attachment and detachment of the developing cartridge to and from the main body housing. The developing cartridge includes a developing roller and a developing memory for storing information. The drum cartridge includes a photosensitive drum. The developing guide is movable together with the developing cartridge between a first position where the developing roller is in contact with the photosensitive drum and a second position where the developing roller is separated from the photosensitive drum. The developing guide includes a developing memory terminal configured to be in contact with the developing memory in a state where the developing cartridge is attached to the main body housing.
    Type: Application
    Filed: September 24, 2021
    Publication date: January 13, 2022
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Yasuo FUKAMACHI, Kazutoshi NAKAMURA, Masaaki FURUKAWA
  • Publication number: 20220004139
    Abstract: An image forming apparatus includes: a casing having an opening; a developing cartridge configured to accommodate toner therein; and a drum cartridge to which the developing cartridge is attachable. The drum cartridge is attachable to the casing through the opening in a state where the developing cartridge is attached to the drum cartridge. The drum cartridge includes: a photosensitive drum; a drum frame; a charge roller; a cleaning blade configured to clean a circumferential surface of the photosensitive drum; a waste toner collecting unit having an internal space allowing waste toner removed from the circumferential surface of the photosensitive drum by the cleaning blade to be collected therein; a waste toner accumulating unit having an internal space allowing the waste toner to be accumulated therein; and a waste toner conveying unit configured to convey the waste toner from the waste toner collecting unit to the waste toner accumulating unit.
    Type: Application
    Filed: September 17, 2021
    Publication date: January 6, 2022
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Masaaki FURUKAWA, Takashi SHIMIZU, Shinya KUSUDA, Tomitake ARATACHI, Yasuo FUKAMACHI, Keita SHIMIZU, Kazutoshi NAKAMURA, Kouichi SUGIMOTO
  • Publication number: 20210356900
    Abstract: An image-forming apparatus includes: a photosensitive drum, a motor, and a drum gear train configured to transmit a driving force from the motor to the photosensitive drum. The drum gear train includes a first gear, a second gear and a first clutch. The first gear is rotatable about a first axis upon receipt of the driving force. The second gear is rotatable about the first axis and configured to receive the driving force from the first gear and to transmit the driving force to the photosensitive drum. The first clutch is switchable between a first transmission state where the driving force is transmitted from the first gear to the second gear and a first transmission cutoff state where the transmission of the driving force from the first gear to the second gear is cut off.
    Type: Application
    Filed: May 17, 2021
    Publication date: November 18, 2021
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Kazutoshi NAKAMURA, Tomitake ARATACHI, Sota HIRANO, Kazuma HINOUE, Shintaro SUZUKI, Ayaka KOMORI, Marika OZAKI
  • Publication number: 20210293309
    Abstract: A developing device may include an auger or an agitator that is capable of supplying toner in a toner accommodation chamber to a developing chamber and is rotatable about an auger axis extending in an axial direction, a transporting gear that is rotatable together with the auger or the agitator, and a moving gear that is in mesh with a coupling gear and is rotatable both counterclockwise and clockwise. The moving gear is movable while being in mesh with the coupling gear between a first position where the moving gear is in mesh with the transporting gear and a second position where the moving gear is out of mesh with the transporting gear. The moving gear moves to the first position when the coupling gear rotates counterclockwise and to the second position when the coupling gear rotates clockwise.
    Type: Application
    Filed: June 3, 2021
    Publication date: September 23, 2021
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Takashi SHIMIZU, Yasuo FUKAMACHI, Keita SHIMIZU, Kazutoshi NAKAMURA
  • Patent number: 11028903
    Abstract: A developing device may include an auger or an agitator that is capable of supplying toner in a toner accommodation chamber to a developing chamber and is rotatable about an auger axis extending in an axial direction, a transporting gear that is rotatable together with the auger or the agitator, and a moving gear that is in mesh with a coupling gear and is rotatable both counterclockwise and clockwise. The moving gear is movable while being in mesh with the coupling gear between a first position where the moving gear is in mesh with the transporting gear and a second position where the moving gear is out of mesh with the transporting gear. The moving gear moves to the first position when the coupling gear rotates counterclockwise and to the second position when the coupling gear rotates clockwise.
    Type: Grant
    Filed: March 19, 2020
    Date of Patent: June 8, 2021
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Takashi Shimizu, Yasuo Fukamachi, Keita Shimizu, Kazutoshi Nakamura
  • Publication number: 20210088962
    Abstract: An image forming apparatus includes a main casing, a drum cartridge and a developing cartridge. The drum cartridge may include a first handle positioned at a first end of a frame of the drum cartridge. The developing cartridge may include a second handle positioned at a first end of a developing casing the developing cartridge. The main casing may include a first edge surface in the axial direction and a second edge surface opposite the first edge surface in the axial direction. The second handle may extend farther from the second edge surface than the first handle extends from the second edge surface in the axial direction in a state where the drum cartridge and the developing cartridge are attached to the main casing.
    Type: Application
    Filed: December 10, 2020
    Publication date: March 25, 2021
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Kazutoshi NAKAMURA, Yasuo FUKAMACHI, Masaaki FURUKAWA
  • Patent number: 10948851
    Abstract: An image forming apparatus may include a developing device including a developing roller and a coupling rotatable both in a first direction and in a second direction opposite to the first direction, a coupler engageable with the coupling, a motor configured to drive the coupler, the motor configured to cause the coupler to be a first state in which the coupling rotates in the second direction and a second state in which the coupling rotates in the first direction, and a controller configured to transfer, to the motor, an instruction for changing the coupler to the second state, in a case where the controller judges that the remaining toner amount in a developing chamber of the developing device is smaller than or equal to the first predetermined value.
    Type: Grant
    Filed: March 18, 2020
    Date of Patent: March 16, 2021
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Takashi Shimizu, Keita Shimizu, Yasuo Fukamachi, Kazutoshi Nakamura, Kasuma Hinoue
  • Publication number: 20210016985
    Abstract: A sheet tray configured to accommodate a sheet includes a first tray, a second tray directly connectable to the first tray, and a third tray directly connectable to the first tray and to the second tray in a state where the second tray is disengaged from the first tray, the third tray being made of metal. The sheet tray is configured to take a first state where the first tray is directly connected to the second tray and a second state where the third tray connects the first tray to the second tray. The sheet tray is configured to accommodate a sheet having a first size in the first state and a sheet having a second size longer than the sheet having the first size in the second state.
    Type: Application
    Filed: July 16, 2020
    Publication date: January 21, 2021
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Kazutoshi NAKAMURA, Yasuo FUKAMACHI, Keita SHIMIZU
  • Patent number: 10866557
    Abstract: An image forming apparatus includes a main casing, a drum cartridge and a developing cartridge. The drum cartridge may include a first handle positioned at a first end of a frame of the drum cartridge. The developing cartridge may include a second handle positioned at a first end of a developing casing the developing cartridge. The main casing may include a first edge surface in the axial direction and a second edge surface opposite the first edge surface in the axial direction. The second handle may extend farther from the second edge surface than the first handle extends from the second edge surface in the axial direction in a state where the drum cartridge and the developing cartridge are attached to the main casing.
    Type: Grant
    Filed: February 27, 2020
    Date of Patent: December 15, 2020
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Kazutoshi Nakamura, Yasuo Fukamachi, Masaaki Furukawa
  • Patent number: 10841444
    Abstract: An image reading apparatus includes: a supply tray, which supports sheets to be supplied and includes a movable plate configured to move from a first position to a second position as the sheet supported by the supply tray is decreased, the second position being higher than the first position; a discharge tray; a conveyance guide; a reading sensor; a discharge unit, which includes a discharge opening to discharge the sheet conveyed by the conveyance guide to the discharge tray and is configured to move from a third position to a fourth position as the sheet supported by the paper feed tray is decreased, the fourth position being higher than the third position; and a first drive source, which generates a drive force, wherein the discharge unit is configured to move by receiving the drive force and to transmit the drive force to the movable plate.
    Type: Grant
    Filed: January 30, 2019
    Date of Patent: November 17, 2020
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Takashi Fujiwara, Kazutoshi Nakamura
  • Publication number: 20200332863
    Abstract: A developing device may include an auger or an agitator that is capable of supplying toner in a toner accommodation chamber to a developing chamber and is rotatable about an auger axis extending in an axial direction, a transporting gear that is rotatable together with the auger or the agitator, and a moving gear that is in mesh with a coupling gear and is rotatable both counterclockwise and clockwise. The moving gear is movable while being in mesh with the coupling gear between a first position where the moving gear is in mesh with the transporting gear and a second position where the moving gear is out of mesh with the transporting gear. The moving gear moves to the first position when the coupling gear rotates counterclockwise and to the second position when the coupling gear rotates clockwise.
    Type: Application
    Filed: March 19, 2020
    Publication date: October 22, 2020
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Takashi SHIMIZU, Yasuo FUKAMACHI, Keita SHIMIZU, Kazutoshi NAKAMURA
  • Publication number: 20200310297
    Abstract: An image forming apparatus may include a developing device including a developing roller and a coupling rotatable both in a first direction and in a second direction opposite to the first direction, a coupler engageable with the coupling, a motor configured to drive the coupler, the motor configured to cause the coupler to be a first state in which the coupling rotates in the second direction and a second state in which the coupling rotates in the first direction, and a controller configured to transfer-, to the motor, an instruction for changing the coupler to the second state, in a case where the controller judges that the remaining toner amount in a developing chamber of the developing device is smaller than or equal to the first predetermined value.
    Type: Application
    Filed: March 18, 2020
    Publication date: October 1, 2020
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Takashi SHIMIZU, Keita SHIMIZU, Yasuo FUKAMACHI, Kazutoshi NAKAMURA, Kasuma HINOUE
  • Publication number: 20200286989
    Abstract: A semiconductor device includes a semiconductor body, an electrode provided on a surface of the semiconductor body. The semiconductor body includes a first semiconductor layer and a second semiconductor layer provided between the first semiconductor layer and the second electrode. The second semiconductor layer includes first and second regions arranged along the surface of the semiconductor body. The first region has a surface contacting the electrode, and the second region includes second conductivity type impurities with a concentration lower than a concentration of the second conductivity type impurities at the surface of the first region. The second semiconductor layer has a first concentration of second conductivity type impurities at a first position in the second region, and a second concentration of second conductivity type impurities at a second position between the first position and the electrode, the second concentration being lower than the first concentration.
    Type: Application
    Filed: June 21, 2019
    Publication date: September 10, 2020
    Inventors: Masato Izumi, Kazutoshi Nakamura
  • Patent number: 10700184
    Abstract: According to one embodiment, a semiconductor device a first electrode, a first semiconductor region, a second semiconductor region, a third semiconductor region, a fourth semiconductor region, a fifth semiconductor region, a sixth semiconductor region, a seventh semiconductor region, an eighth semiconductor region, a gate electrode, a ninth semiconductor region, and a second electrode. The first, second, and fourth semiconductor regions are provided on the first electrode. The third semiconductor region is provided between the first and second semiconductor regions. The fifth semiconductor region is provided on the first, second, third, and fourth semiconductor regions. The sixth and seventh semiconductor regions are provided on the fifth semiconductor region. The eighth semiconductor region is provided on a portion of the seventh semiconductor region. The ninth semiconductor region is provided around the sixth semiconductor region and the seventh semiconductor region.
    Type: Grant
    Filed: September 4, 2018
    Date of Patent: June 30, 2020
    Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATION
    Inventors: Tomohiro Tamaki, Kazutoshi Nakamura, Ryohei Gejo
  • Publication number: 20200192274
    Abstract: An image forming apparatus includes a main casing, a drum cartridge and a developing cartridge. The drum cartridge may include a first handle positioned at a first end of a frame of the drum cartridge. The developing cartridge may include a second handle positioned at a first end of a developing casing the developing cartridge. The main casing may include a first edge surface in the axial direction and a second edge surface opposite the first edge surface in the axial direction. The second handle may extend farther from the second edge surface than the first handle extends from the second edge surface in the axial direction in a state where the drum cartridge and the developing cartridge are attached to the main casing.
    Type: Application
    Filed: February 27, 2020
    Publication date: June 18, 2020
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Kazutoshi NAKAMURA, Yasuo FUKAMACHI, Masaaki FURUKAWA
  • Publication number: 20190296132
    Abstract: According to one embodiment, a semiconductor device a first electrode, a first semiconductor region, a second semiconductor region, a third semiconductor region, a fourth semiconductor region, a fifth semiconductor region, a sixth semiconductor region, a seventh semiconductor region, an eighth semiconductor region, a gate electrode, a ninth semiconductor region, and a second electrode. The first, second, and fourth semiconductor regions are provided on the first electrode. The third semiconductor region is provided between the first and second semiconductor regions. The fifth semiconductor region is provided on the first, second, third, and fourth semiconductor regions. The sixth and seventh semiconductor regions are provided on the fifth semiconductor region. The eighth semiconductor region is provided on a portion of the seventh semiconductor region. The ninth semiconductor region is provided around the sixth semiconductor region and the seventh semiconductor region.
    Type: Application
    Filed: September 4, 2018
    Publication date: September 26, 2019
    Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATION
    Inventors: Tomohiro TAMAKI, Kazutoshi NAKAMURA, Ryohei GEJO