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公开(公告)号：US20240295851A1
公开(公告)日：2024-09-05
申请号：US18661881
申请日：2024-05-13
Applicant: CANON KABUSHIKI KAISHA
Inventor： Ryuta Murakami , Tadashi Horikawa , Shunsuke Uratani , Yuichiro Inaba
CPC classification number: G03G21/186 , G03G15/757 , G03G21/1647 , G03G21/18 , G03G21/1864 , G03G2221/1657 , G03G2221/183
Abstract: A process cartridge includes a frame having a side surface at a side of the process cartridge. A photosensitive drum is supported by the frame, the photosensitive drum being rotatable about an axis thereof, the photosensitive drum including a first end positioned at the side of the process cartridge and a second end opposite to the first end in a direction of the axis of the photosensitive drum. A projection is positioned coaxial with the photosensitive drum and at the side of the process cartridge, with the projection projecting from the side surface of the frame in the axial direction of the photosensitive drum with at least a tip of the projection being exposed to outside of the process cartridge. A gear is positioned at the side of the process cartridge, with the gear being rotatable about an axis thereof, the gear having a plurality of teeth, with at least some of the teeth being exposed teeth that are uncovered by the frame and exposed to outside of the process cartridge, and with a tip of at least one of the exposed teeth facing the axis of the photosensitive drum.
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公开(公告)号：US11971683B2
公开(公告)日：2024-04-30
申请号：US17486162
申请日：2021-09-27
Applicant: CANON KABUSHIKI KAISHA
Inventor： Satoru Nishioka , Kazuhiro Yamauchi , Hiroaki Watanabe , Takumi Furukawa , Yasuhiro Fushimoto , Masahiro Kurachi , Kenji Takashima , Yuichi Kikuchi , Kana Sato
CPC classification number: G03G5/105 , G03G5/051 , G03G5/06 , G03G5/07 , G03G5/104 , G03G15/0233 , G03G15/1685 , G03G15/75 , G03G21/18
Abstract: Provided an electrophotographic electro-conductive member that can stably suppress an occurrence of fogging in an electrophotographic image. The member comprises a support having an electro-conductive outer surface, and an electro-conductive layer on the outer surface of the support, the electro-conductive layer having a matrix including a cross-linked product of a first rubber, and domains dispersed in the matrix, the domains each includes a cross-linked product of a second rubber and an electro-conductive particle, at least some of the domains is exposed to the outer surface of the electro-conductive member to constitute protrusions on an outer surface of the member, the outer surface of the electro-conductive member is constituted by the matrix and the domains exposed to the outer surface of the electrophotographic electro-conductive member, the electrophotographic electro-conductive member has an impedance of 1.0×103Ω or more and 1.0×108Ω or less, and some of the domains satisfy two specific requirements.
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公开(公告)号：US11966192B2
公开(公告)日：2024-04-23
申请号：US18313422
申请日：2023-05-08
Applicant: BROTHER KOGYO KABUSHIKI KAISHA
Inventor： Shougo Sato
CPC classification number: G03G21/18 , G03G21/10 , G03G21/105 , G03G21/12 , G03G21/1803 , G03G21/1817 , G03G21/1821 , G03G21/1842 , G03G21/1846 , G03G21/1853 , G03G2221/183 , G03G2221/1846 , G03G2221/1884
Abstract: A first side frame is apart from a second side frame in a first direction. A photosensitive drum is rotatable about a drum axis extending in the first direction. The photosensitive drum is rotatably supported between the first side frame and the second side frame. A grip portion extends in the first direction. A first connector extends in a second direction perpendicular to the first direction. The first connector connects the first side frame and a first end portion of the grip portion. The second connector extends in the second direction. The second connector connects the second side frame and a second end portion of the grip portion. A scanner unit is configured to expose the photosensitive drum to light. The scanner unit is located between the photosensitive drum and the grip portion as viewed in a third direction which is perpendicular to the first and second directions.
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公开(公告)号：US20230375976A1
公开(公告)日：2023-11-23
申请号：US18229722
申请日：2023-08-03
Applicant: CANON KABUSHIKI KAISHA
Inventor： Tetsuo Uesugi , Makoto Hayashida , Koji Yamaguchi , Takashi Yano
CPC classification number: G03G21/1853 , G03G15/08 , G03G21/16 , G03G15/757 , G03G15/00 , G03G21/1857 , G03G21/18 , G03G21/186 , G03G2221/1657 , G03G2215/0132 , Y10T403/60 , Y10T403/606 , Y10T403/7026 , Y10T403/7033 , G03G21/1821 , G03G21/1842
Abstract: A developing cartridge includes a coupling member provided adjacent to a first end of a casing. The coupling member is operatively connected to a developing roller, and the coupling member is rotatable about a rotational axis thereof. The coupling member includes (i) a cylindrical portion, (ii) a first projection at least partially positioned inside of the cylindrical portion, (iii) a second projection at least partially positioned inside of the cylindrical portion, (iv) an elastically movable projection at least partially positioned inside of the cylindrical portion, and (v) a wall extending in a direction perpendicular to the rotational axis and positioned between a second end of the casing and the first and second projections.
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公开(公告)号：US20230266706A1
公开(公告)日：2023-08-24
申请号：US18309854
申请日：2023-05-01
Applicant: BROTHER KOGYO KABUSHIKI KAISHA
Inventor： Shougo Sato
CPC classification number: G03G21/12 , G03G21/18 , G03G21/1839
Abstract: An image forming apparatus includes a photosensitive drum, a developing device, a toner container, a cleaner, a waste toner container, and a waste toner conveying pipe. The cleaner is configured to clean a peripheral surface of the photosensitive drum after a toner image has been transferred to the printing medium. The waste toner container is configured to accommodate therein waste toner removed from the peripheral surface of the photosensitive drum by the cleaner. The waste toner conveying pipe is configured to convey the waste toner from the cleaner to the waste toner container. The cleaner is located between the photosensitive drum and the fixing device in a vertical direction. The developing device is located below the photosensitive drum. The waste toner container is located below the cleaner. The toner container covers at least a part of an upper surface of the waste toner container.
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Patent Agency Ranking
公开(公告)号：US11720055B2
公开(公告)日：2023-08-08
申请号：US17686550
申请日：2022-03-04
Applicant: CANON KABUSHIKI KAISHA
Inventor： Ryuta Murakami , Tadashi Horikawa , Shunsuke Uratani , Yuichiro Inaba
CPC classification number: G03G21/186 , G03G15/757 , G03G21/1647 , G03G21/18 , G03G21/1864 , G03G2221/1657 , G03G2221/183
Abstract: A process cartridge includes a frame, a photosensitive drum supported by the frame, and a developing roller supported by the frame. A coupling is operatively connected to the photosensitive drum, with the coupling being rotatable about an axis thereof, and with the coupling being positioned (i) at a first end of the photosensitive drum, (ii) coaxial with the photosensitive drum, and (iii) at a side of the process cartridge. A helical gear is positioned at the side of the process cartridge, the helical gear being rotatable about an axis thereof, the helical gear having a plurality of teeth, with at least some of the teeth being exposed teeth that are uncovered by the frame and exposed to outside of the process cartridge. As measured in an axial direction of the photosensitive drum, at least a part of the exposed teeth of the helical gear is positioned farther from the second end of the photosensitive drum than a tip of a projection of the coupling is positioned from the second end of the photosensitive drum.
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公开(公告)号：US11698600B2
公开(公告)日：2023-07-11
申请号：US17826485
申请日：2022-05-27
Applicant: CANON KABUSHIKI KAISHA
Inventor： Masato Tanabe , Kazutaka Sueshige , Teruhiko Sasaki , Tsukasa Abe , Osamu Anan
CPC classification number: G03G21/1647 , G03G15/0806 , G03G21/1676 , G03G21/18 , G03G21/185 , G03G21/1825 , G03G21/1846 , G03G2221/1657
Abstract: Disclosed is a developing apparatus including: a developer bearing member that bears a developer; a developing frame body that rotatably supports the developer bearing member; a one-end side end member that supports one-end side in an axis direction of the developer bearing member of the developing frame body; and another-end side end member that supports the other-end side in the axis direction of the developer bearing member of the developing frame body. Each of the one-end side end member and the other-end side end member is independently movable with respect to the developing frame body.
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公开(公告)号：US20190064695A1
公开(公告)日：2019-02-28
申请号：US16114690
申请日：2018-08-28
Applicant: CANON KABUSHIKI KAISHA
Inventor： Takashi Ninomiya
IPC: G03G15/08
CPC classification number: G03G15/0808 , G03G15/08 , G03G15/0865 , G03G15/0887 , G03G15/0891 , G03G21/18
Abstract: A developing device includes a developer accommodation frame; a feeding screw including a shaft portion and a helical blade to feed the developer in the accommodation frame by rotation thereof; a supporting member provided with a gear engaged with one end portion of the shaft portion to transmit a rotational force to the feeding screw; and a bearing portion for rotatably supporting the supporting member. In a state that supporting member is supported by the bearing portion, the one end portion is inside the accommodation frame, and a distance between an end portion of the bearing portion in a rotational axis direction and an end portion of the helical blade closest to the bearing portion is larger than a distance between the end portion of the bearing portion and an end portion of the shaft portion.
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公开(公告)号：US20190033746A1
公开(公告)日：2019-01-31
申请号：US16149558
申请日：2018-10-02
Applicant: CANON KABUSHIKI KAISHA
Inventor： Noboru Miyagawa , Hidekazu Matsuda
CPC classification number: G03G15/02 , G03G15/0233 , G03G21/18 , Y10T428/2947
Abstract: In order to maintain the image quality of a recent high-speed electrophotographic apparatus, a charging member is provided which hardly causes charging unevenness of a photosensitive member even when vibration of the photosensitive member occurs. The charging member includes an electro-conductive support, an electro-conductive elastic layer, and a surface layer. The elastic layer contains a resin having an epichlorohydrin chain in the molecular structure and a specific flavonoid compound having two or more hydroxyl groups in the molecular structure.
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公开(公告)号：US09996047B2
公开(公告)日：2018-06-12
申请号：US15404426
申请日：2017-01-12
Applicant: CANON KABUSHIKI KAISHA
Inventor： Tomoya Kawakami , Arihiro Yamamoto , Masaaki Kimura
CPC classification number: G03G21/0017 , G03G21/18 , G03G2215/1647 , G03G2215/1661
Abstract: Provided is a cleaning blade including: an elastic member; and a supporting member supporting the elastic member. The elastic member includes a free end portion, and the free end portion has an edge and a first surface and a second surface that form the edge. At least one of the first surface and the second surface has a hardened surface. The following expression (1): 0.1≤DHs≤0.4 and the following expression (2): DHs
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