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    Developing device
    3.
    发明授权
    Developing device 有权

    公开(公告)号：US11846892B2

    公开(公告)日：2023-12-19

    申请号：US17989907

    申请日：2022-11-18

    Applicant: CANON KABUSHIKI KAISHA

    Inventor： Osamu Ariizumi ,  Jun Shirayanagi ,  Fumiyoshi Saito

    IPC: G03G15/01

    CPC classification number: G03G15/0173 ,  G03G2215/0177

    Abstract: A developing device includes a rotatable developing member, a developing container, a first communication opening, a second communication opening, a first feeding screw including a first rotation shaft, first and second blade portions, a second feeding screw including a second rotation shaft, third and fourth blade portions, a developer discharge opening provided upstream of an upstream end of the second communication opening in a first direction, and a third communication opening provided upstream of the upstream end of the second communication opening in the first direction. In a second direction opposite to the first direction, the third communication opening overlaps with the second blade portion. In the first direction, the third communication opening overlaps with the fourth blade portion. In the first direction, a downstream end of the third communication opening is positioned downstream of a downstream end of the developer discharge opening.

    Developing apparatus
    4.
    发明授权
    Developing apparatus 有权

    公开(公告)号：US10261444B2

    公开(公告)日：2019-04-16

    申请号：US15599664

    申请日：2017-05-19

    Applicant: CANON KABUSHIKI KAISHA

    Inventor： Jun Shirayanagi

    IPC: G03G15/08 ,  G03G15/09 ,  G03G15/02

    Abstract: A developing apparatus includes a rotatable developer carrying member, a first chamber to supply developer to the developer carrying member, and a second chamber to collect the developer from the developer carrying member. A first conveyance screw in the first chamber conveys the developer in a first conveyance direction, and a second conveyance screw conveys the developer in the second chamber. The second conveyance screw includes a rotary shaft, a first vane portion, and a second vane portion provided downstream of the first vane portion. A developer discharge portion is disposed upstream of the second vane portion in the first conveyance direction and discharges excess developer. The developer discharge portion is disposed in a predetermined area of the second chamber in which the developer is deliverable to a communication portion, and is provided in a bottom portion in the predetermined area of the second chamber.

    Image forming unit
    5.
    发明授权
    Image forming unit 有权
    图像形成单元

    公开(公告)号：US09002234B2

    公开(公告)日：2015-04-07

    申请号：US13732524

    申请日：2013-01-02

    Applicant: Canon Kabushiki Kaisha

    Inventor： Jun Shirayanagi

    IPC: G03G21/16 ,  G03G15/00 ,  G03G21/18

    CPC classification number: G03G21/1839 ,  G03G21/1814 ,  G03G21/1828

    Abstract: In a process cartridge detachably mountable to a main assembly of the apparatus and including a photosensitive member and a charging roller, a spacer member for spacing the charging roller from the photosensitive member during the transportation and the displaying is recessed relative to the photosensitive member. The spacer member receives a driving force from the main assembly of the apparatus, by which the spacer member is disengaged to contact the charging roller to the photosensitive member.

    Abstract translation: 在可拆卸地安装到设备的主组件并且包括感光构件和充电辊的处理盒中，用于在运输和显示期间将充电辊与感光构件间隔开的间隔构件相对于感光构件凹陷。 隔离构件接受来自装置的主组件的驱动力，间隔构件通过该驱动力被分离以使充电辊与感光构件接触。

    DEVELOPING DEVICE
    6.
    发明公开
    DEVELOPING DEVICE 审中-公开

    公开(公告)号：US20230168599A1

    公开(公告)日：2023-06-01

    申请号：US17989907

    申请日：2022-11-18

    Applicant: CANON KABUSHIKI KAISHA

    Inventor： Osamu Ariizumi ,  Jun Shirayanagi ,  Fumiyoshi Saito

    IPC: G03G15/01

    CPC classification number: G03G15/0173 ,  G03G2215/0177

    Abstract: A developing device includes a rotatable developing member, a developing container, a first communication opening, a second communication opening, a first feeding screw including a first rotation shaft, first and second blade portions, a second feeding screw including a second rotation shaft, third and fourth blade portions, a developer discharge opening provided upstream of an upstream end of the second communication opening in a first direction, and a third communication opening provided upstream of the upstream end of the second communication opening in the first direction. In a second direction opposite to the first direction, the third communication opening overlaps with the second blade portion. In the first direction, the third communication opening overlaps with the fourth blade portion. In the first direction, a downstream end of the third communication opening is positioned downstream of a downstream end of the developer discharge opening.

    DEVELOPING APPARATUS
    8.
    发明申请
    DEVELOPING APPARATUS 审中-公开

    公开(公告)号：US20170343928A1

    公开(公告)日：2017-11-30

    申请号：US15599664

    申请日：2017-05-19

    Applicant: CANON KABUSHIKI KAISHA

    Inventor： Jun Shirayanagi

    IPC: G03G15/08 ,  G03G15/09 ,  G03G15/02

    CPC classification number: G03G15/0893 ,  G03G15/0216 ,  G03G15/0233 ,  G03G15/0887 ,  G03G15/0921 ,  G03G15/0935 ,  G03G2215/083 ,  G03G2215/0833

    Abstract: A developing apparatus including: a first chamber including a first conveyance member conveying developer in a first direction; a second chamber including a second conveyance member having a conveyance portion conveying the developer in a second direction opposite to the first direction and a return conveyance portion provided downstream of the conveyance portion in the second direction to convey the developer in the first direction; a first partition wall provided between the first chamber and the second chamber to form a first communication portion and a second communication portion to form a circulation route; and a bearing member configured to rotatably support the second conveyance member and including: a discharge port provided downstream of the return conveyance portion; and a second partition wall extending from the bearing member in the first direction to cover a portion of the return conveyance portion confronting the first communication portion.

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