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公开(公告)号：US20230280673A1
公开(公告)日：2023-09-07
申请号：US18317131
申请日：2023-05-15
发明人： Yuwen WANG , Kazuaki OOKA , Isao KISHI , Junichi HASHIMOTO
CPC分类号： G03G15/0865 , G03G15/0806 , G03G21/1647 , G03G21/1671 , G03G21/1676 , G03G21/1821 , G03G21/1825 , G03G2221/1869
摘要： 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.
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公开(公告)号：US20220206428A1
公开(公告)日：2022-06-30
申请号：US17398108
申请日：2021-08-10
发明人： Kazuaki OOKA , Hikaru IINO
摘要： An image forming apparatus includes: a process cartridge; and an apparatus main body to which the process cartridge is attachable and from which the process cartridge is detachable. The process cartridge includes: a photoconductive drum, and an electrode connected to the photoconductive drum and having a contact surface facing downward. The apparatus main body includes: a support frame supporting one end portion of the process cartridge in an axis direction of the photoconductive drum, a ground metal plate supported by the support frame and connected to ground, and a spring supported by the support frame and configured to contact with the contact surface of the electrode from below to connect the electrode and the ground metal plate.
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公开(公告)号：US20210208532A1
公开(公告)日：2021-07-08
申请号：US17205250
申请日：2021-03-18
发明人： Yuwen WANG , Junichi HASHIMOTO , Isao KISHI , Kazuaki OOKA
摘要： 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.
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公开(公告)号：US20210141320A1
公开(公告)日：2021-05-13
申请号：US17152073
申请日：2021-01-19
发明人： Kazuaki OOKA , Junichi HASHIMOTO , Shota IRIYAMA , Keigo NAKAJIMA , Kengo YADA
摘要： A developing cartridge includes: a casing, a developing roller, a first agitator, a supply roller, and a second agitator. The casing is configured to accommodate toner. The developing roller is rotatable about a developing roller rotation axis extending in a first direction. The first agitator is configured to agitate the toner. The first agitator is rotatable about a first agitator rotation axis extending in the first direction. The supply roller is positioned between the first agitator and the developing roller. The supply roller is rotatable about a supply roller rotation axis extending in the first direction. The second agitator is positioned between the supply roller and the first agitator. The second agitator is rotatable about a second agitator rotation axis extending in the first direction. A rotation locus of the second agitator is positioned outside of a rotation locus of the first agitator.
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公开(公告)号：US20200081371A1
公开(公告)日：2020-03-12
申请号：US16680803
申请日：2019-11-12
发明人： Yuwen WANG , Kazuaki OOKA , Isao KISHI , Junichi HASHIMOTO
摘要： 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.
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公开(公告)号：US20220236689A1
公开(公告)日：2022-07-28
申请号：US17717555
申请日：2022-04-11
发明人： Yuwen WANG , Junichi HASHIMOTO , Isao KISHI , Kazuaki OOKA
摘要： 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.
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公开(公告)号：US20210109456A1
公开(公告)日：2021-04-15
申请号：US17117314
申请日：2020-12-10
发明人： Yuwen WANG , Junichi HASHIMOTO , Isao KISHI , Kazuaki OOKA
摘要： 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.
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8.发明申请公开(公告)号：US20200379401A1
公开(公告)日：2020-12-03
申请号：US16999273
申请日：2020-08-21
发明人： Yuwen WANG , Junichi HASHIMOTO , Isao KISHI , Kazuaki OOKA
IPC分类号： G03G21/16
摘要： 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.
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公开(公告)号：US20200257241A1
公开(公告)日：2020-08-13
申请号：US16861365
申请日：2020-04-29
发明人： Yuwen WANG , Junichi HASHIMOTO , Isao KISHI , Kazuaki OOKA
摘要： 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.
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公开(公告)号：US20200050142A1
公开(公告)日：2020-02-13
申请号：US16656893
申请日：2019-10-18
发明人： Yuwen WANG , Junichi HASHIMOTO , Isao KISHI , Kazuaki OOKA
摘要： 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.
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