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公开(公告)号：US20230065291A1
公开(公告)日：2023-03-02
申请号：US17547475
申请日：2021-12-10
发明人： Kazuki KISHI , Tomoaki YOSHIOKA , Kazuyoshi HAGIWARA , Yoko MIYAMOTO , Toshiaki BABA , Tomohiro WADA , Yosuke TSUTSUMI
IPC分类号： B65H5/02
摘要： A cylinder member includes: a cylinder body having a cross section and including a dent portion; a sheet member wrapped around the cylinder body and including a metal layer contacting the cylinder body and an outer layer; a first attachment member on a sheet member first end portion and removably attached to the dent portion; a second attachment member on a metal layer end portion protruding from the outer layer in the circumferential direction at a sheet member second end portion, the second attachment member being removably attached to the dent portion; a tension-applying mechanism pulling the second attachment member in a dent portion depth direction to apply tension to the metal layer; a projection on one of the second attachment member and metal layer end portion; and a fitting portion on other one of the second attachment member and the metal layer end portion and fitted to the projection.
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2.发明申请公开(公告)号：US20230063746A1
公开(公告)日：2023-03-02
申请号：US17556537
申请日：2021-12-20
摘要： A transfer device includes: a transfer drum that has a groove-like recess extending in an axial direction in an outer circumferential portion thereof, rotates about an axis thereof, and comes into contact with a medium being transported at a portion thereof on an upstream side of the recess in a rotation direction; a nip member, the nip member and the transfer drum forming therebetween a nip part where the medium is nipped; an application member that applies a voltage to the nip part where the medium is nipped, so that an image is transferred to the medium; and a contact mechanism that causes the nip member to come into contact only with a portion on the upstream side of the recess in the transfer drum in the rotation direction at a transfer-start time when the transfer of the image to the medium starts.
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公开(公告)号：US20220107590A1
公开(公告)日：2022-04-07
申请号：US17334093
申请日：2021-05-28
发明人： Toshiaki BABA , Yoko MIYAMOTO , Koichiro YUASA , Tomoaki YOSHIOKA
IPC分类号： G03G15/16
摘要： A rotation device includes: a rotary body having a recess in an outer peripheral surface thereof; and a brush configured to come into contact with the outer peripheral surface of the rotary body to remove a foreign matter adhering to the outer peripheral surface, in which the brush is separated from the outer peripheral surface of the rotary body in a state where rotation of the rotary body is stopped.
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公开(公告)号：US20220107589A1
公开(公告)日：2022-04-07
申请号：US17329687
申请日：2021-05-25
IPC分类号： G03G15/16
摘要： A drum member includes a drum body having a hollow cylindrical shape and a sheet member wrapped around the drum body, and an elastic adhesive disposed between the drum body and the sheet member.
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公开(公告)号：US20220229384A1
公开(公告)日：2022-07-21
申请号：US17715242
申请日：2022-04-07
发明人： Yoko MIYAMOTO , Takashi HOSHINO , Shinji OKUYAMA , Tomoaki YOSHIOKA , Toshiaki BABA , Chihiro IIJIMA
摘要： An image forming apparatus includes: a colorant image former; an image holder configured to hold a colorant image formed by the colorant image forming unit and to be rotationally driven; a transfer member configured to transfer the colorant image onto a recording medium, which is transported from an upstream side, by sandwiching the recording medium between the transfer member and the image holder, and rotationally driving the transfer member to transport the recording medium to a downstream side; and a contact-and-separation mechanism configured to relatively contact or separate the image holder and the transfer member, in which, in response to an abnormality being detected, the image forming apparatus operates in a mode in which the contact-and-separation mechanism relatively separates the image holder and the transfer member, and then rotational driving of the transfer member is stopped after rotational driving of the image holder is stopped.
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公开(公告)号：US20220097426A1
公开(公告)日：2022-03-31
申请号：US17330597
申请日：2021-05-26
摘要： A method for manufacturing an elastic body having a two-layer structure includes: forming a first elastic body on a provisional cylinder body having a substantially circular shape in cross section; and forming a second elastic body integrally with the first elastic body, which has been formed on the provisional cylinder body.
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公开(公告)号：US20230068665A1
公开(公告)日：2023-03-02
申请号：US17549410
申请日：2021-12-13
发明人： Kazuki KISHI , Tomoaki YOSHIOKA , Kazuyoshi HAGIWARA , Yoko MIYAMOTO , Toshiaki BABA , Tomohiro WADA , Yosuke TSUTSUMI
摘要： A method for attaching a sheet member to a cylinder body includes: preliminarily fixing a first end portion of the sheet member to a first fixation portion of a cylinder body provided in an apparatus body and having a substantially circular cross section; wrapping the sheet member around the cylinder body by rotating the cylinder body; fixing the first end portion and a second end portion of the sheet member to the first fixation portion and a second fixation portion, respectively; and installing an installation member between the apparatus body and an inner surface of the sheet member before the wrapping of the sheet member around the cylinder body.
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公开(公告)号：US20230064257A1
公开(公告)日：2023-03-02
申请号：US17577458
申请日：2022-01-18
IPC分类号： G03G15/16
摘要： An image forming apparatus includes at least one upper image forming unit in which an image holding unit is disposed above a transfer unit in such a manner as to face the transfer unit with a transfer medium, which moves in a predetermined direction, interposed between the image holding unit and the transfer unit and at least one lower image forming unit in which an image holding unit is disposed below a transfer unit in such a manner as to face the transfer unit with the transfer medium interposed between the image holding unit and the transfer unit, the transfer unit of the upper image forming unit and the transfer unit of the lower image forming unit each including a transfer member that extends in a width direction crossing the direction of movement of the transfer medium and that is brought into contact with the transfer medium and a pressing unit that presses the transfer member toward the image holding unit, and the pressing units being set in such a manner that a pressing force that is applied by one of the pressing units to the transfer member of the upper image forming unit is larger than a pressing force that is applied by another one of the pressing units to the transfer member of the lower image forming unit in a direction that makes pressing loads of the transfer members against the image holding units equal.
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公开(公告)号：US20210294246A1
公开(公告)日：2021-09-23
申请号：US17340845
申请日：2021-06-07
发明人： Tomoaki YOSHIOKA , Mitsuaki KURODA , Kazuyoshi HAGIWARA , Shohei MIYAGAWA , Kei TANAKA , Masaaki TAKAHASHI , Yoko MIYAMOTO , Toshiaki BABA
摘要： Provided is an image forming apparatus including: an annular transfer belt having an outer surface on which an image is transferred; a transferring unit including a transfer cylinder having a transfer area that sandwiches a recording medium with the outer surface of the transfer belt to transfer the image from the outer surface of the transfer belt to the recording medium, and a pair of first rotating bodies disposed on both axial end sides of the transfer cylinder; a pair of circulating members each being wound around the first rotating body and being circulated by rotation of the first rotating bodies; and a holding unit attached to the circulating members, the holding unit configured to hold the recording medium, transport the recording medium with circulation of the circulating members, and pass the recording medium through the transfer area.
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公开(公告)号：US20210286294A1
公开(公告)日：2021-09-16
申请号：US17337923
申请日：2021-06-03
IPC分类号： G03G15/16
摘要： An image forming apparatus includes: an annular transfer belt having an outer surface on which an image is transferred; a nip portion that forms a nip region for nipping a recording medium with an outer surface of the transfer belt; a facing portion that faces the nip region from an inner side of the transfer belt and transfers the image from the transfer belt to the recording medium in the nip region by charging the transfer belt; and a transport unit including a holding portion that holds the recording medium, transports the recording medium by moving the holding portion, and causes the recording medium together with the holding portion to pass the nip region while holding the recording medium at the holding portion.
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