Patents by Inventor Isao Kishi

Isao Kishi 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: 20220236689
    Abstract: A photosensitive drum is rotatable about a drum axis extending in a first direction. A frame includes a first side plate located at first end in the first direction and a second side plate spaced from the first side plate in the first direction. The frame rotatably supports the photosensitive drum between the first side plate and the second side plate in the first direction. The frame holds a developer cartridge. A lock lever is pivotable about a pivot axis extending in a second direction intersecting with the first direction. The lock lever is movable between a lock position at which the developer cartridge is locked on the frame and a release position at which the developer cartridge is unlocked from the frame.
    Type: Application
    Filed: April 11, 2022
    Publication date: July 28, 2022
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Yuwen WANG, Junichi HASHIMOTO, Isao KISHI, Kazuaki OOKA
  • Publication number: 20220171331
    Abstract: A drum unit includes: a frame; a first photosensitive drum; a second photosensitive drum; a charger; and a storage medium. The frame includes: a first frame plate; a second frame plate spaced apart from the first frame plate in a first direction; a third frame plate connecting one end of the first frame plate to one end of the second frame plate; and a fourth frame plate connecting another end of the first frame plate to another end of the second frame plate. The first photosensitive drum and the second photosensitive drum are rotatably supported by the frame. The second photosensitive drum is spaced apart from the first photosensitive drum and positioned closer to the third frame plate than the first photosensitive drum to the third frame plate in a second direction. The storage medium has an electrical contact surface positioned at an outer surface of the third frame plate.
    Type: Application
    Filed: February 17, 2022
    Publication date: June 2, 2022
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Isao KISHI, Nao ITABASHI, Yohei HASHIMOTO, Kouji WATANABE, Makoto SOUDA
  • Publication number: 20220146960
    Abstract: A developing roller is located nearer a first end than a second end in a first direction. A first boss extends in a second direction and is movable together with a housing. The first boss bears the weight of a developer cartridge when the first boss is supported by a support surface of a first side plate of a drum unit, and is located away from the developing roller in the first direction and the third direction. A first pressure receiving surface is located farther away from the developing roller than the first boss in the third direction. The pressure receiving member receives a pressing force in the third direction from a pressing member of the first side plate of the drum unit. The first boss is located away from the developing roller in the first direction by a first distance. The first pressure receiving surface is located away from the developing roller in the first direction by the first distance or by a second distance smaller than the first distance.
    Type: Application
    Filed: January 20, 2022
    Publication date: May 12, 2022
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Yuwen WANG, Kazuaki OOKA, Isao KISHI, Junichi HASHIMOTO
  • Publication number: 20220137549
    Abstract: A developing cartridge includes: a casing; a developing roller; a shaft; and a cam. The casing is configured to accommodate developer therein. The developing roller is rotatable about a first axis extending in an axial direction. The shaft extends along a second axis extending in the axial direction. The shaft is movable along the second axis. The cam is movable along the second axis in response to axial movement of the shaft. The cam has a cam surface non-parallel with the second axis.
    Type: Application
    Filed: January 12, 2022
    Publication date: May 5, 2022
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Yuwen WANG, Junichi HASHIMOTO, Isao KISHI, Kazuaki OOKA
  • Patent number: 11320779
    Abstract: A photosensitive drum is rotatable about a drum axis extending in a first direction. A frame includes a first side plate located at first end in the first direction and a second side plate spaced from the first side plate in the first direction. The frame rotatably supports the photosensitive drum between the first side plate and the second side plate in the first direction. The frame holds a developer cartridge. A lock lever is pivotable about a pivot axis extending in a second direction intersecting with the first direction. The lock lever is movable between a lock position at which the developer cartridge is locked on the frame and a release position at which the developer cartridge is unlocked from the frame.
    Type: Grant
    Filed: February 12, 2021
    Date of Patent: May 3, 2022
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Yuwen Wang, Junichi Hashimoto, Isao Kishi, Kazuaki Ooka
  • Patent number: 11262695
    Abstract: A drum unit includes: a frame; a first photosensitive drum; a second photosensitive drum; a charger; and a storage medium. The frame includes: a first frame plate; a second frame plate spaced apart from the first frame plate in a first direction; a third frame plate connecting one end of the first frame plate to one end of the second frame plate; and a fourth frame plate connecting another end of the first frame plate to another end of the second frame plate. The first photosensitive drum and the second photosensitive drum are rotatably supported by the frame. The second photosensitive drum is spaced apart from the first photosensitive drum and positioned closer to the third frame plate than the first photosensitive drum to the third frame plate in a second direction. The storage medium has an electrical contact surface positioned at an outer surface of the third frame plate.
    Type: Grant
    Filed: November 18, 2020
    Date of Patent: March 1, 2022
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Isao Kishi, Nao Itabashi, Yohei Hashimoto, Kouji Watanabe, Makoto Souda
  • Patent number: 11256208
    Abstract: A developing cartridge includes: a casing; a developing roller; a shaft; and a cam. The casing is configured to accommodate developer therein. The developing roller is rotatable about a first axis extending in an axial direction. The shaft extends along a second axis extending in the axial direction. The shaft is movable along the second axis. The cam is movable along the second axis in response to axial movement of the shaft. The cam has a cam surface non-parallel with the second axis.
    Type: Grant
    Filed: March 18, 2021
    Date of Patent: February 22, 2022
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Yuwen Wang, Junichi Hashimoto, Isao Kishi, Kazuaki Ooka
  • Patent number: 11249418
    Abstract: A developing roller is located nearer a first end than a second end in a first direction. A first boss extends in a second direction and is movable together with a housing. The first boss bears the weight of a developer cartridge when the first boss is supported by a support surface of a first side plate of a drum unit, and is located away from the developing roller in the first direction and the third direction. A first pressure receiving surface is located farther away from the developing roller than the first boss in the third direction. The pressure receiving member receives a pressing force in the third direction from a pressing member of the first side plate of the drum unit. The first boss is located away from the developing roller in the first direction by a first distance. The first pressure receiving surface is located away from the developing roller in the first direction by the first distance or by a second distance smaller than the first distance.
    Type: Grant
    Filed: December 3, 2020
    Date of Patent: February 15, 2022
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Yuwen Wang, Kazuaki Ooka, Isao Kishi, Junichi Hashimoto
  • Patent number: 11204579
    Abstract: A drawer includes: a photosensitive drum; and a frame to which a developing cartridge is attachable. The photosensitive drum is rotatable about a rotational axis extending in an axial direction. The photosensitive drum has an outer circumferential surface. The developing cartridge includes a developing roller having an outer circumferential surface. The developing cartridge is attachable to the frame in a state where the outer circumferential surface of the developing roller faces the outer circumferential surface of the photosensitive drum. The frame is configured to move the developing roller in a separation direction in response to movement in the axial direction of at least a portion of the developing cartridge attached to the frame. The separation direction is a direction in which the outer circumferential surface of the developing roller separates from the outer circumferential surface of the photosensitive drum.
    Type: Grant
    Filed: August 21, 2020
    Date of Patent: December 21, 2021
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Yuwen Wang, Junichi Hashimoto, Isao Kishi, Kazuaki Ooka
  • Publication number: 20210232083
    Abstract: An image forming apparatus includes a drawer and a main body. The drawer includes a drawer-side electrical contact part and a socket. The main body includes a main body-side connector including: a main body-side electrical contact part; and a holder including a base, a panel, and an elastic member interposed between the base and the panel. The holder holds the main body-side electrical contact part to be movable in an intersection direction intersecting with an extension and contraction direction of the elastic member. When the holder contacts the socket, the panel moves relative to the base in the intersection direction together with the main body side-electrical contact part, and the main body side-electrical contact part and drawer-side electrical contact part are in contact with each other.
    Type: Application
    Filed: April 15, 2021
    Publication date: July 29, 2021
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Shota SHINOYA, Isao KISHI
  • Publication number: 20210208532
    Abstract: A developing cartridge includes: a casing; a developing roller; a shaft; and a cam. The casing is configured to accommodate developer therein. The developing roller is rotatable about a first axis extending in an axial direction. The shaft extends along a second axis extending in the axial direction. The shaft is movable along the second axis. The cam is movable along the second axis in response to axial movement of the shaft. The cam has a cam surface non-parallel with the second axis.
    Type: Application
    Filed: March 18, 2021
    Publication date: July 8, 2021
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Yuwen WANG, Junichi HASHIMOTO, Isao KISHI, Kazuaki OOKA
  • Publication number: 20210208534
    Abstract: A drum unit includes: a frame; a first photosensitive drum; a second photosensitive drum; a charger; and a storage medium. The frame includes: a first frame plate; a second frame plate spaced apart from the first frame plate in a first direction; a third frame plate connecting one end of the first frame plate to one end of the second frame plate; and a fourth frame plate connecting another end of the first frame plate to another end of the second frame plate. The first photosensitive drum and the second photosensitive drum are rotatably supported by the frame. The second photosensitive drum is spaced apart from the first photosensitive drum and positioned closer to the third frame plate than the first photosensitive drum to the third frame plate in a second direction. The storage medium has an electrical contact surface positioned at an outer surface of the fourth frame plate.
    Type: Application
    Filed: March 19, 2021
    Publication date: July 8, 2021
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventor: Isao KISHI
  • Patent number: 11054765
    Abstract: A drum cartridge includes a first photosensitive drum, a frame, a main body connector, a first toner cartridge connector, a drum-cartridge circuit board, a harness, and a first harness. The harness is electrically connected between the main body connector and the drum-cartridge circuit board. The harness extends in the first direction. The first harness is electrically connected between the first toner cartridge connector and the drum-cartridge circuit board. The first harness extends in the second direction.
    Type: Grant
    Filed: August 20, 2020
    Date of Patent: July 6, 2021
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventor: Isao Kishi
  • Publication number: 20210165342
    Abstract: A developing roller is located nearer a first end than a second end in a first direction. A first boss extends in a second direction and is movable together with a housing. The first boss bears the weight of a developer cartridge when the first boss is supported by a support surface of a first side plate of a drum unit, and is located away from the developing roller in the first direction and the third direction. A first pressure receiving surface is located farther away from the developing roller than the first boss in the third direction. The pressure receiving member receives a pressing force in the third direction from a pressing member of the first side plate of the drum unit. The first boss is located away from the developing roller in the first direction by a first distance. The first pressure receiving surface is located away from the developing roller in the first direction by the first distance or by a second distance smaller than the first distance.
    Type: Application
    Filed: December 3, 2020
    Publication date: June 3, 2021
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Yuwen WANG, Kazuaki OOKA, Isao KISHI, Junichi HASHIMOTO
  • Publication number: 20210165361
    Abstract: A photosensitive drum is rotatable about a drum axis extending in a first direction. A frame includes a first side plate located at first end in the first direction and a second side plate spaced from the first side plate in the first direction. The frame rotatably supports the photosensitive drum between the first side plate and the second side plate in the first direction. The frame holds a developer cartridge. A lock lever is pivotable about a pivot axis extending in a second direction intersecting with the first direction. The lock lever is movable between a lock position at which the developer cartridge is locked on the frame and a release position at which the developer cartridge is unlocked from the frame.
    Type: Application
    Filed: February 12, 2021
    Publication date: June 3, 2021
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Yuwen WANG, Junichi HASHIMOTO, Isao KISHI, Kazuaki OOKA
  • Patent number: 10996615
    Abstract: An image forming apparatus includes a drawer and a main body. The drawer includes a drawer-side electrical contact part and a socket. The main body includes a main body-side connector including: a main body-side electrical contact part; and a holder including a base, a panel, and an elastic member interposed between the base and the panel. The holder holds the main body-side electrical contact part to be movable in an intersection direction intersecting with an extension and contraction direction of the elastic member. When the holder contacts the socket, the panel moves relative to the base in the intersection direction together with the main body side-electrical contact part, and the main body side-electrical contact part and drawer-side electrical contact part are in contact with each other.
    Type: Grant
    Filed: February 10, 2020
    Date of Patent: May 4, 2021
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Shota Shinoya, Isao Kishi
  • Publication number: 20210109456
    Abstract: A developing cartridge includes a casing having an outer surface, a developing roller, a first electrode, and a boss. The developing roller is movable together with the casing and includes a developing roller shaft extending along a first axis extending in a first direction. The developing roller is rotatable about the first axis. The first electrode is positioned at one end portion in the first direction of the developing roller shaft, and electrically connected to the developing roller shaft. The boss is positioned at one end portion in the first direction of the outer surface. The boss extends in the first direction and is engageable with the drum unit. A part of the first electrode is configured to contact with a second electrode of the drum unit as a result of pivotal movement of the developing cartridge about the boss relative to the drum unit.
    Type: Application
    Filed: December 10, 2020
    Publication date: April 15, 2021
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Yuwen WANG, Junichi HASHIMOTO, Isao KISHI, Kazuaki OOKA
  • Patent number: 10962923
    Abstract: A developing cartridge includes: a casing; a developing roller; a shaft; and a cam. The casing is configured to accommodate developer therein. The developing roller is rotatable about a first axis extending in an axial direction. The shaft extends along a second axis extending in the axial direction. The shaft is movable along the second axis. The cam is movable along the second axis in response to axial movement of the shaft. The cam has a cam surface non-parallel with the second axis.
    Type: Grant
    Filed: April 29, 2020
    Date of Patent: March 30, 2021
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Yuwen Wang, Junichi Hashimoto, Isao Kishi, Kazuaki Ooka
  • Patent number: 10955793
    Abstract: A drum unit includes: a frame; a first photosensitive drum; a second photosensitive drum; a charger; and a storage medium. The frame includes: a first frame plate; a second frame plate spaced apart from the first frame plate in a first direction; a third frame plate connecting one end of the first frame plate to one end of the second frame plate; and a fourth frame plate connecting another end of the first frame plate to another end of the second frame plate. The first photosensitive drum and the second photosensitive drum are rotatably supported by the frame. The second photosensitive drum is spaced apart from the first photosensitive drum and positioned closer to the third frame plate than the first photosensitive drum to the third frame plate in a second direction. The storage medium has an electrical contact surface positioned at an outer surface of the fourth frame plate.
    Type: Grant
    Filed: August 13, 2019
    Date of Patent: March 23, 2021
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventor: Isao Kishi
  • Publication number: 20210072698
    Abstract: A drum unit includes: a frame; a first photosensitive drum; a second photosensitive drum; a charger; and a storage medium. The frame includes: a first frame plate; a second frame plate spaced apart from the first frame plate in a first direction; a third frame plate connecting one end of the first frame plate to one end of the second frame plate; and a fourth frame plate connecting another end of the first frame plate to another end of the second frame plate. The first photosensitive drum and the second photosensitive drum are rotatably supported by the frame. The second photosensitive drum is spaced apart from the first photosensitive drum and positioned closer to the third frame plate than the first photosensitive drum to the third frame plate in a second direction. The storage medium has an electrical contact surface positioned at an outer surface of the third frame plate.
    Type: Application
    Filed: November 18, 2020
    Publication date: March 11, 2021
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Isao KISHI, Nao ITABASHI, Yohei HASHIMOTO, Kouji WATANABE, Makoto SOUDA