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公开(公告)号：US12060242B2
公开(公告)日：2024-08-13
申请号：US17497769
申请日：2021-10-08
发明人： Tomoya Tateishi , Jumpei Nitta
CPC分类号： B65H3/0607 , B65H3/0684 , G03G15/6529
摘要： A sheet feeding device includes a door movable between an opened position and a closed position relative to an apparatus body, a stacking portion for a sheet, a cover portion configured to be situated at a first position when the door is situated at the opened position and to be situated at a second position when the door is situated at the closed position, and a moving unit including a feeding roller and a moving member supporting the feeding roller. The moving member is movable with respect to the stacking portion in a first direction in which the feeding roller comes close to the stacking portion and in a second direction which is opposite to the first direction. In a state in which the cover portion is situated at the first position, the moving unit is situated between the cover portion and the door.
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公开(公告)号：US11932510B2
公开(公告)日：2024-03-19
申请号：US17365258
申请日：2021-07-01
发明人： Jumpei Nitta , Kazuhiro Hosohara
CPC分类号： B65H5/38 , B65H3/0676 , B65H3/66 , B65H5/062
摘要： A sheet feeding apparatus includes a sheet supporting portion configured to support a sheet, a feed rotary member configured to feed the sheet supported by the sheet supporting portion, a curved conveyance path through which the sheet fed by the feed rotary member passes and which is curved upward, an upper conveyance path disposed above the sheet supporting portion so as to pass through a sheet and configured to join with the curved conveyance path, and a driven rotary member disposed inside of the curved conveyance path in a curved direction thereof and driven to rotate by the sheet passing though the curved conveyance path.
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公开(公告)号：US12050430B2
公开(公告)日：2024-07-30
申请号：US18073755
申请日：2022-12-02
发明人： Jumpei Nitta , Tomoya Tateishi , Akinori Mitsumata
IPC分类号： G03G21/16
CPC分类号： G03G21/1619 , G03G21/1638 , G03G2215/00544 , G03G2215/00675 , G03G2221/1684
摘要： An image forming apparatus includes a first roller, a second roller arranged downstream of the first roller in a sheet conveyance direction, the second roller including a rotation shaft and a roller body supported by the rotation shaft, a third roller arranged downstream of the second roller in the sheet conveyance direction, a first support member configured to rotatably support the first roller, a second support member configured to rotatably support the third roller, and a bearing member configured to rotatably support an end portion of the rotation shaft. The bearing member includes a first positioning portion configured to position an end portion of the first support member and a second positioning portion configured to position an end portion of the second support member.
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公开(公告)号：US12025946B2
公开(公告)日：2024-07-02
申请号：US17869686
申请日：2022-07-20
发明人： Jumpei Nitta , Tomoya Tateishi , Akinori Mitsumata
CPC分类号： G03G21/1633 , G03G15/6529 , G03G15/6567
摘要： An image forming apparatus includes a drive roller configured to be rotated by a drive source, a first rotation member configured to be driven to rotate by the drive roller, and a second rotation member configured to be driven to rotate by the drive roller. The drive roller, the first rotation member, and the second rotation member are configured to convey a sheet in a state where the sheet is present at a first nip portion and a second nip portion at the same time.
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公开(公告)号：US20230031782A1
公开(公告)日：2023-02-02
申请号：US17869686
申请日：2022-07-20
发明人： Jumpei Nitta , Tomoya Tateishi , Akinori Mitsumata
摘要： An image forming apparatus includes a drive roller configured to be rotated by a drive source, a first rotation member configured to be driven to rotate by the drive roller, and a second rotation member configured to be driven to rotate by the drive roller. The drive roller, the first rotation member, and the second rotation member are configured to convey a sheet in a state where the sheet is present at a first nip portion and a second nip portion at the same time.
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公开(公告)号：US20200377324A1
公开(公告)日：2020-12-03
申请号：US16885123
申请日：2020-05-27
发明人： Jumpei Nitta , Tatsuo Nishiyama , Atsushi Murakami
摘要： A sheet feeding apparatus includes a stacking member having a separation unit and an opening portion disposed upstream from the separation unit, a feeding member, and a moving device that includes a slope portion having a slope along which sheets are guided toward the separation unit. The moving device moves the stacking member between a first position where the feeding member and sheets stacked on the stacking member are in contact with each other, and a second position where the feeding member and the sheets are not in contact with each other. When the stacking member is at the first position, the slope portion is disposed at a position lower than the separation unit in a vertical direction. When the stacking member is at the second position, the slope portion is disposed to protrude via the opening portion to be higher than a stacking surface of the stacking member.
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公开(公告)号：US20240152083A1
公开(公告)日：2024-05-09
申请号：US18503411
申请日：2023-11-07
发明人： Jumpei Nitta , Tomoya Tateishi , Osamu Sasaoka , Kohei Koguchi , Shuma Hiasa
CPC分类号： G03G15/5008 , G03G15/0868 , G03G15/751 , G03G2215/00544 , G03G2215/025 , G03G2215/066
摘要： An image forming apparatus includes a rotary configured to rotate and including a developing roller and a storage frame including a storage portion configured to store toner, a body frame with an opening, a toner cartridge which is attachable to and detachable from the rotary through the opening, which is movable to an attached position and a retracted position, a moving device configured to move the toner cartridge from the attached position to the retracted position, and an opening/closing member provided to be movable between a closed position and an open position. The opening/closing member is configured to move from the closed position to the open position in an interconnected manner with movement of the toner cartridge from the attached position to the retracted position by the moving device.
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公开(公告)号：US20220127090A1
公开(公告)日：2022-04-28
申请号：US17497769
申请日：2021-10-08
发明人： Tomoya Tateishi , Jumpei Nitta
摘要： A sheet feeding device includes a door movable between an opened position and a closed position relative to an apparatus body, a stacking portion for a sheet, a cover portion configured to be situated at a first position when the door is situated at the opened position and to be situated at a second position when the door is situated at the closed position, and a moving unit including a feeding roller and a moving member supporting the feeding roller. The moving member is movable with respect to the stacking portion in a first direction in which the feeding roller comes close to the stacking portion and in a second direction which is opposite to the first direction. In a state in which the cover portion is situated at the first position, the moving unit is situated between the cover portion and the door.
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公开(公告)号：US10173850B2
公开(公告)日：2019-01-08
申请号：US15662136
申请日：2017-07-27
发明人： Jumpei Nitta , Fuyuto Yamashita
IPC分类号： B65H1/04
摘要： A sheet feeding device for feeding a sheet includes a support unit, an open-close member rotatably supported between open and closed positions, a slide member supported in a slidably movable manner and including a rotation shaft portion, and a regulation member supported by the slide member. The open-close member supports the sheet in the open position with the support unit. The regulation member regulates a position of the sheet supported by the support unit or the sheet supported by the support unit and the open-close member. The support unit includes a guide portion that movably guides the rotation shaft portion. If the open-close member is rotated from the open position toward the closed position in a state in which the open-close member is in contact with the slide member, the slide member rotates by following movement of the open-close member with respect to the guide member.
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公开(公告)号：US20180044125A1
公开(公告)日：2018-02-15
申请号：US15662136
申请日：2017-07-27
发明人： Jumpei Nitta , Fuyuto Yamashita
IPC分类号： B65H1/04
CPC分类号： B65H1/04 , B65H2402/31 , B65H2402/32 , B65H2402/45 , B65H2405/111643 , B65H2405/1122 , B65H2405/1124 , B65H2405/115 , B65H2405/324 , B65H2511/11 , B65H2511/20 , B65H2801/12 , B65H2220/01 , B65H2220/04
摘要： A sheet feeding device for feeding a sheet includes a support unit, an open-close member rotatably supported between open and closed positions, a slide member supported in a slidably movable manner and including a rotation shaft portion, and a regulation member supported by the slide member. The open-close member supports the sheet in the open position with the support unit. The regulation member regulates a position of the sheet supported by the support unit or the sheet supported by the support unit and the open-close member. The support unit includes a guide portion that movably guides the rotation shaft portion. If the open-close member is rotated from the open position toward the closed position in a state in which the open-close member is in contact with the slide member, the slide member rotates by following movement of the open-close member with respect to the guide member.
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