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    Transfer device and image forming apparatus
    23.
    发明授权
    Transfer device and image forming apparatus 有权

    公开(公告)号：US11474459B2

    公开(公告)日：2022-10-18

    申请号：US17370491

    申请日：2021-07-08

    Applicant: FUJIFILM Business Innovation Corp.

    Inventor： Yoko Miyamoto ,  Kazuyoshi Hagiwara ,  Tomoaki Yoshioka ,  Toshiaki Baba ,  Kazuki Kishi ,  Shinji Okuyama

    IPC: G03G15/16 ,  G03G15/00

    Abstract: A transfer device includes: a transfer member to which a voltage is applied by a power supply device to generate a transfer electric field for transferring a developer image to a recording medium; a transfer cylinder having a recess in which a retaining member that retains a leading end portion of the recording medium is disposed, the transfer electric field being generated between the transfer cylinder and the transfer member at a transfer position; a shunt circuit by which the voltage applied to the transfer member is shunted to a reference potential point; and an operation stopping mechanism that starts and stops an operation of the shunt circuit in response to rotation of the transfer cylinder, the operation being started when the recess reaches the transfer position and stopped when the recess leaves the transfer position.

    IMAGE FORMING APPARATUS
    25.
    发明申请
    IMAGE FORMING APPARATUS 有权

    公开(公告)号：US20220107592A1

    公开(公告)日：2022-04-07

    申请号：US17320937

    申请日：2021-05-14

    Applicant: FUJIFILM Business Innovation Corp.

    Inventor： Koichiro Yuasa ,  Kazuki Kishi ,  Yoko Miyamoto ,  Toshiaki Baba ,  Tomoaki Yoshioka

    IPC: G03G15/16 ,  G03G15/02 ,  G03G15/08

    Abstract: An image forming apparatus includes: a rotating body having a recess in an outer peripheral surface thereof; a transfer portion that is in contact with the outer peripheral surface of the rotating body, the transfer portion being configured to transfer a toner to a recording medium passing between the rotating body and the transfer portion; and a brush configured to come into contact with the outer peripheral surface of the rotating body to remove a toner adhering to the outer peripheral surface.

    Image forming apparatus including a transfer cylider, a sprocket, a chain, an image forming part and a transfer unit
    29.
    发明授权
    Image forming apparatus including a transfer cylider, a sprocket, a chain, an image forming part and a transfer unit 有权

    公开(公告)号：US11733621B2

    公开(公告)日：2023-08-22

    申请号：US17665046

    申请日：2022-02-04

    Applicant: FUJIFILM Business Innovation Corp.

    Inventor： Tomoaki Yoshioka ,  Mitsuaki Kuroda

    IPC: G03G15/16

    CPC classification number: G03G15/1605

    Abstract: An image forming apparatus includes: a transfer cylinder that rotates; a rotating member that is coaxial with the transfer cylinder and rotates integrally with the transfer cylinder; a circulating member that is provided with a holding part that holds a front end portion of a recording medium, is suspended around the rotating member, and transports the recording medium by circulating as the rotating member rotates; an image forming part that forms an image; and a transfer unit having a transfer belt onto which the image is transferred from the image forming part at a contact position with the image forming part and that transfers the image onto the recording medium transported by the circulating member by sandwiching the recording medium together with the transfer cylinder at a nip position. A product of mass of the transfer cylinder and a distance from a center of mass of the transfer unit to the nip position is smaller than a product of mass of the image forming part and a distance from the center of mass to the contact position.

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