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公开(公告)号：US12235597B2
公开(公告)日：2025-02-25
申请号：US18633697
申请日：2024-04-12
Applicant: BROTHER KOGYO KABUSHIKI KAISHA
Inventor： Nao Itabashi , Junichi Yokoi
Abstract: A developing cartridge may include: a casing configured to accommodate developer therein, the casing extending in the first direction; a coupling rotatable about a first axis extending in the first direction, the coupling being positioned at one side of the casing in the first direction; a detection gear rotatable about a second axis extending in the first direction, the detection gear being positioned at another side of the casing in the first direction; and a storage medium including an electric contact surface, the electric contact surface being positioned at the one side of the casing in the first direction.
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公开(公告)号：US20250060699A1
公开(公告)日：2025-02-20
申请号：US18791740
申请日：2024-08-01
Applicant: CANON KABUSHIKI KAISHA
Inventor： SHUNSUKE OKAZAKI
Abstract: An image forming apparatus includes an apparatus body including a sheet feeding unit, an insertion port in which the sheet fed by sheet feeding unit is inserted, a cartridge that is configured to store toner, the cartridge being attachably and detachably supported by the apparatus body, an attachment/detachment port through which the cartridge passes, and a cover configured to move to a first position where the cover closes the insertion port and the attachment/detachment port and a second position where the cover opens the insertion port and the attachment/detachment port. In a state in which the cover is positioned at the second position, the sheet feeding unit is capable of feeding the sheet that has been inserted to the insertion port, and the cartridge is capable of being attached to and detached from the apparatus body via the attachment/detachment port.
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公开(公告)号：US12228881B2
公开(公告)日：2025-02-18
申请号：US18536261
申请日：2023-12-12
Applicant: Shoki Matsuda , Keisuke Tada , Yasuyuki Sanui
Inventor： Shoki Matsuda , Keisuke Tada , Yasuyuki Sanui
Abstract: Yellow toner with excellent cleanability, transferability and device contamination resistance is provided. When intensity of spectrum at wavenumber λ, at which total intensity of Raman spectrums of toner particles from 950 cm−1 through 3,250 cm−1 in Raman spectroscopy of toner is maximum, is normalized to 1, and distribution is generated for ≥300 particles regarding LC calculated by [LC (%)=CH5 rate (%)−CHc rate (%)] based on CHc rate (%) defined as [(Inc−Iave)/Iave]×100 and CHs rate (%) defined as [(Ins−Iave)/Iave]×100 where In and Ins represent integrated intensities of spectrums of center and surface portions of each particle from 2,750 cm−1 through 3,250 cm−1, and Iave represents average of Inc and Ins of all particles, percentage by number of particles having LC deviating from LC distribution median by absolute value of ≥25.0; is ≥1.0% by number and ≤25.0% by number.
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公开(公告)号：US12228879B2
公开(公告)日：2025-02-18
申请号：US18357095
申请日：2023-07-21
Applicant: BROTHER KOGYO KABUSHIKI KAISHA
Inventor： Shougo Sato
IPC: G03G21/18
Abstract: An image forming apparatus includes a housing having an opening, a drawer movable through the opening between a housing position and a drawn position, a process cartridge mountable to and removable from the drawer and including a drum cartridge including a photosensitive drum rotating about a first axis, and a developing cartridge including a developing roller that supplies toner to the photosensitive drum and rotates about a second axis extending in parallel with the first axis, and an intermediate transfer belt located above the drum cartridge in a state where the process cartridge is mounted to the drawer and the drawer is located in the housing position. The developing cartridge includes a handle. The handle is located opposite to the photosensitive drum with respect to the developing roller in a direction of drawing the drawer, in a state where the process cartridge is removed from the drawer.
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公开(公告)号：US12222673B2
公开(公告)日：2025-02-11
申请号：US18226362
申请日：2023-07-26
Applicant: CANON KABUSHIKI KAISHA
Inventor： Akira Yoshimura , Tomio Noguchi , Yukio Kubo , Masaaki Sato , Satoshi Nishiya , Yosuke Kashiide
Abstract: A process cartridge includes a photosensitive drum and a developing roller for developing a latent image on the photosensitive drum. The process cartridge also includes a protrusion having a surface configured to receive a force to move a frame supporting the developing roller from the first position in which the developing roller contacts the photosensitive drum to the second position in which the developing roller is spaced apart from the photosensitive drum. The process cartridge is configured such that, when the frame is in the first position and the process cartridge is oriented with the photosensitive drum and the protrusion positioned at a bottom side of the process cartridge, (i) a rotational axis of the photosensitive drum is lower than a rotational axis of the developing roller, and (ii) as viewed in a direction of the rotational axis of the photosensitive drum, the surface of the protrusion extends in a direction that is perpendicular to a part of a surface at the bottom side of the process cartridge that extends away from the photosensitive drum and away from the protrusion.
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Patent Agency Ranking
6.发明申请公开(公告)号：US20250036043A1
公开(公告)日：2025-01-30
申请号：US18912918
申请日：2024-10-11
Applicant: BROTHER KOGYO KABUSHIKI KAISHA
Inventor： Saya MINOSHIMA , Tomitake ARATACHI , Keita SHIMIZU
Abstract: A developing cartridge includes: a casing; a developing roller rotatable about a developing axis extending in a first direction and positioned at one end portion of the casing in a second direction crossing the first direction; a developing electrode electrically connected to the developing roller and positioned at one end portion of the casing in the first direction; a supply roller rotatable about a supply axis extending in the first direction and configured to supply toner to the developing roller; a supply electrode electrically connected to the supply roller and positioned at one end portion of the casing in the first direction; and an IC chip having an electrical contact surface positioned at one end portion of the casing in the first direction. The electrical contact surface is positioned opposite the developing electrode in the second direction with respect to a part of the supply electrode.
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公开(公告)号：US20250036035A1
公开(公告)日：2025-01-30
申请号：US18902008
申请日：2024-09-30
Applicant: MITSUBISHI CHEMICAL CORPORATION
Inventor： Tsukasa HASEGAWA , Manuel Emilio OTERO RAMIREZ , Akira ANDO
Abstract: The present invention provides a novel electrophotographic photoconductor having at least a photosensitive layer and a protective layer on a conductive support, the protective layer containing an electron donating compound and preferably further containing an electron transporting compound, the electrophotographic photoconductor having good electrical properties, especially residual potential properties, even when a compound having an electron transporting structure is contained in the protective layer.
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公开(公告)号：US12210311B2
公开(公告)日：2025-01-28
申请号：US18372781
申请日：2023-09-26
Applicant: CANON KABUSHIKI KAISHA
Inventor： Goshi Ozaki , Noriyuki Komatsu , Tetsuo Uesugi
Abstract: An image forming apparatus comprises a main assembly of the image forming apparatus, with the main assembly including a driving shaft. The image forming apparatus also includes a cartridge detachably mountable to the main assembly of the image forming apparatus, the cartridge including (i) a photosensitive drum and (ii) a coupling positioned adjacent to an end portion of the photosensitive drum, with the coupling being movable in an axial direction of the photosensitive drum. The coupling is engageable with the driving shaft by the coupling moving in the axial direction in a state in which the cartridge is tilted relative to the main assembly of the image forming apparatus.
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公开(公告)号：US12210309B2
公开(公告)日：2025-01-28
申请号：US18475339
申请日：2023-09-27
Applicant: CANON KABUSHIKI KAISHA
Inventor： Shigeharu Kurita
Abstract: An image forming apparatus includes: a plurality of stations and a plurality of stays arranged along a first direction; and a first board support member supporting a first electric board. Each of the plurality of stations includes: a rotation shaft extending in a second direction intersecting the first direction; and a photosensitive member and a flywheel provided to the rotation shaft. The first board support member is attached to two of the plurality of stays so as to bridge a gap between the two stays, and provided, in the second direction, on a first side opposite to a second side of the flywheel on which the photosensitive member is provided. The first board support member overlaps with the flywheel of at least one of the plurality of stations when viewed from a viewpoint along the second direction.
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公开(公告)号：US12204275B2
公开(公告)日：2025-01-21
申请号：US18486004
申请日：2023-10-12
Applicant: BROTHER KOGYO KABUSHIKI KAISHA
Inventor： Keita Shimizu , Tomoya Ichikawa , Takashi Shimizu , Kazuna Taguchi
Abstract: A developing cartridge includes a developing electrode and a supply electrode. The developing electrode includes a first electrical contact in contact with a developing roller shaft, and a second electrical contact positioned closer to the developing roller shaft than a second agitator gear is to the developing roller shaft. The second electrical contact is positioned farther from the developing roller shaft than the first electrical contact is from the developing roller shaft. The supply electrode includes a first electrical contact in contact with the supply roller shaft, and a second electrical contact positioned closer to the developing roller shaft than the second agitator gear is to the developing roller shaft. The second electrical contact of the supply electrode is positioned farther from the developing roller shaft than the second electrical contact of the developing electrode is from the developing roller shaft.
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