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公开(公告)号：US12111587B2
公开(公告)日：2024-10-08
申请号：US18315682
申请日：2023-05-11
Applicant: Brother Kogyo Kabushiki Kaisha
Inventor： Masahiko Hayakawa , Masashi Imai , Shougo Sato
CPC classification number: G03G15/0889 , G03G15/0844 , G03G15/0865 , G03G15/0868 , G03G15/0872 , G03G15/0875 , G03G15/0877 , G03G15/0886 , G03G15/0896 , G03G21/1647 , G03G21/1676
Abstract: A developing device includes a developer cartridge and a developing unit. The developer cartridge, in some instances, may include a shutter. This shutter may have a wall for closing a developer supply hole, and be movable, with respect to a developer cartridge casing, between an open position where the supply hole is opened by the wall and a closed position where the supply hole is closed by the wall. The shutter may further include a protrusion that is movable with respect to the wall of the shutter between a first position and a second position in an axial direction. The protrusion, in the first position, is engageable with a developing unit and, in the second position, would be disengaged from the developing unit.
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公开(公告)号：US20240319633A1
公开(公告)日：2024-09-26
申请号：US18670874
申请日：2024-05-22
Applicant: BROTHER KOGYO KABUSHIKI KAISHA
Inventor： Nao Itabashi
CPC classification number: G03G15/0865 , G03G15/0808 , G03G15/0889 , G03G21/1676
Abstract: A developing cartridge may include a developing roller, a casing capable of containing a developer therein, a developing electrode movable with the casing and the developing roller and pivotable about a developing roller shaft of the developing roller in a direction, a first lever movable relative to the casing, and a holder configured to hold the first lever relative to the casing, in case where the developing electrode pivots from one side of the direction to an other side of the direction, the first lever stops the pivotable movement of the developing electrode from one side of the direction to the other side of the direction and the holder prevents the first lever from coming off the holder from the one side of the direction to the other side of the direction.
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公开(公告)号：US12066770B2
公开(公告)日：2024-08-20
申请号：US18151124
申请日：2023-01-06
Applicant: Oki Electric Industry Co., Ltd.
Inventor： Kaori Sudo
IPC: G03G15/08
CPC classification number: G03G15/087 , G03G15/0886 , G03G15/0889 , G03G2215/0816
Abstract: A developer container includes: a container body that stores developer; an agitating member that is rotatably disposed in the container body and rotates to agitate the developer; a first swing member that includes a first fixed end, a first free end, a first surface, and a second surface opposite the first surface, and that is swung by the agitating member coming into contact with the first surface when the agitating member rotates; and a projecting support that is disposed to face the second surface and project from a wall surface formed in the container body, and that abuts the second surface.
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公开(公告)号：US12007712B2
公开(公告)日：2024-06-11
申请号：US18332143
申请日：2023-06-09
Applicant: KYOCERA Document Solutions Inc.
Inventor： Junichi Nakagawa , Tamotsu Shimizu , Hiroshi Yamazaki , Kenichi Tamaki , Takuji Watanabe
CPC classification number: G03G21/0052 , G03G7/0013 , G03G15/0808 , G03G15/081 , G03G15/0889 , G03G21/206 , G03G2215/085 , G03G2221/0021
Abstract: Provided is an image forming apparatus in which, while image formation is prevented from being performed, scattered toner that has dropped from a filter and adhered to an outer peripheral surface of a developer carrying member is recovered by a cleaning unit through intermediation of an image bearing member. An absolute value of a perpendicular-magnetic-force gradient of a fixed magnet of the developer carrying member is 4.0 mT/° or less at a position where the fixed magnet faces a central portion of the filter in a rotation direction of a developing sleeve.
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公开(公告)号：US20240184228A1
公开(公告)日：2024-06-06
申请号：US18436075
申请日：2024-02-08
Applicant: E-Z INK TECHNOLOGY CO., LTD
Inventor： Shengkui ZHAO , Dongming LIN , Peng WANG , Hangyu PENG
IPC: G03G15/08
CPC classification number: G03G15/0863 , G03G15/0875 , G03G15/0889 , G03G2215/0695 , G03G2215/0852
Abstract: A developing cartridge includes a housing, a chip, and a chip connection assembly. The chip is provided with an electrical contact, and at least a part of the chip connection assembly may move relative to the housing as a movable member between a first position and a second position. In the first position, a communication connection cannot be established between the electrical contact and a power terminal outside the developing cartridge. In the second position, the movable member enables a communication connection to be established between the electrical contact and the power terminal outside the developing cartridge. Such a design can prevent damage to the electrical contact of the chip and improve working stability of the chip.
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Patent Agency Ranking
公开(公告)号：US11982952B2
公开(公告)日：2024-05-14
申请号：US17470235
申请日：2021-09-09
Applicant: CANON KABUSHIKI KAISHA
Inventor： Naoya Asanuma , Takatoshi Hamada , Masato Tanabe , Tomofumi Kawamura , Yusuke Atsu
CPC classification number: G03G15/0865 , G03G15/0875 , G03G15/0877 , G03G15/0889 , G03G21/1647 , G03G21/206 , G03G2221/1657
Abstract: A toner cartridge includes a casing, a feeding member, and a pump. The casing includes a toner accommodation chamber accommodating toner, a toner discharging chamber having a discharge opening for discharging the toner, and a communication passage for fluid communication between the toner accommodation chamber and the toner discharging chamber such that the toner can move from the toner accommodation chamber to the toner discharging chamber. A part of the feeding member is positioned inside the communication passage. In a first cross-sectional plane perpendicular to a toner feeding direction of the feeding member, a minimum cross-sectional area of the communication passage is Asmin, in a second cross-sectional plane perpendicular to the toner feeding direction, the toner discharging chamber has a cross-sectional area Bs that is larger than Asmin, and in a third cross-sectional plane perpendicular to the toner feeding direction, the toner accommodation chamber has a cross-sectional area Cs that is larger than Asmin.
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公开(公告)号：US20240103403A1
公开(公告)日：2024-03-28
申请号：US18473767
申请日：2023-09-25
Applicant: CANON KABUSHIKI KAISHA
Inventor： KOSHIN SEKIYA
CPC classification number: G03G15/0889 , G03G15/0868 , G03G15/0872 , G03G15/0886 , G03G15/0893 , G03G21/1676 , G03G2215/0827
Abstract: A developing device includes a developer carrier, first and second chambers, first and second communication portions, first and second conveyance screws, a pair of sealing members, and a drive transmission gear. The developer carrier carries developer containing toner and carrier for developing an electrostatic image formed on an image carrier. The second chamber is partitioned from the first chamber. The first conveyance screw conveys the developer in a first direction from the first communication portion toward the second communication portion. The second conveyance screw conveys the developer in a second direction from the second communication portion toward the first communication portion. The sealing member pair seals the first and second communication portions to store initial developer in the second chamber. The drive transmission gear includes a fitting portion to which a tool to input a driving force for rotating the second conveyance screw to the drive transmission gear is fitted.
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公开(公告)号：US11934113B2
公开(公告)日：2024-03-19
申请号：US18177485
申请日：2023-03-02
Applicant: BROTHER KOGYO KABUSHIKI KAISHA
Inventor： Yasuo Fukamachi , Kazuna Taguchi , Takuya Kanda
CPC classification number: G03G15/0889 , G03G15/0891 , G03G21/1647 , G03G2221/1657
Abstract: A developing cartridge may include: a casing; a developing roller extending in a first direction; a developing-roller gear; a coupling including a coupling gear; a first idle gear; a second idle gear; an agitator; a first agitator gear; and a protrusion. The developing-roller gear, the coupling, the first idle gear, the second idle gear, the first agitator gear, and the protrusion may be positioned at an outer surface of the casing. The protrusion may be positioned between a first axis of the coupling and a third axis of the first agitator gear in a second direction connecting the first and third axes. The protrusion may be positioned outside an addendum circle of the developing-roller gear, an addendum circle of the coupling gear, an addendum circle of the first idle gear, and an addendum circle of the second idle gear. The first agitator gear may be spaced apart from the protrusion in the first direction.
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公开(公告)号：US20240061359A1
公开(公告)日：2024-02-22
申请号：US18501182
申请日：2023-11-03
Applicant: CANON KABUSHIKI KAISHA
Inventor： NOBUYUKI KOBAYASHI , KENICHI IIDA , MASAHIRO HAYAKAWA , MASAAKI SATO , HARUYUKI HOTTA
CPC classification number: G03G15/0862 , G03G15/0808 , G03G15/0855 , G03G15/0856 , G03G15/0879 , G03G15/0889 , G03G15/553 , G03G15/556 , G03G2215/0678 , G03G2215/0682
Abstract: An image forming apparatus includes: a detection unit configured to detect an amount of developer stored in a developing container and to output remaining amount information; and a control unit configured to perform control, during a replenishment of the developer to the developing container using a replenishment container, to cause a display unit to display a message related to the replenishment. When the replenishment is instructed, the control unit is further configured to perform a first control during the replenishment in a case where the remaining amount information indicates a first remaining amount, and configured to perform a second control different from the first control during the replenishment in a case where the remaining amount information indicates a second remaining amount greater than the first remaining amount.
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公开(公告)号：US11906912B2
公开(公告)日：2024-02-20
申请号：US17968435
申请日：2022-10-18
Applicant: KYOCERA Document Solutions Inc.
Inventor： Akihiro Watanabe , Eiji Gyotoku
CPC classification number: G03G15/0891 , G03G15/0865 , G03G15/0889 , G03G15/50 , G03G15/0879 , G03G2215/0636
Abstract: A toner conveyance device includes a vertical conveyance portion, a horizontal conveyance portion, a conveyance member, and a loosening member. The vertical conveyance portion conveys a toner or developer conveyed therein through an entry port connected to a main-body-side conveyance path by causing the toner or developer to fall vertically. The horizontal conveyance portion is connected to a lower end of the vertical conveyance portion and conveys the toner or developer in a horizontal direction by using the conveyance member. the loosening member is arranged at a first position below a connection portion between the main-body-side conveyance path and the entry port and at a second position protruding upward beyond the connection portion. A toner loosening mode is executable in which the toner or developer is fed into the vertical conveyance portion so as to cause the loosening member to reciprocate at the second position.
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