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公开(公告)号：US11698602B2
公开(公告)日：2023-07-11
申请号：US17792463
申请日：2020-10-22
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Jonghyun Park , Janghyun Son , Hojin Jang
CPC classification number: G03G21/1842 , G03G15/0881 , G03G2215/066 , G03G2221/1654
Abstract: An image forming apparatus includes a main body provided with a mounting portion and an interference member, and a toner cartridge inserted into the mounting portion. The toner cartridge includes a housing containing toner, a coupling portion, a front cover coupled to one end of the housing via the coupling portion, and a switching member to weaken a coupling force of the coupling portion by interfering with the interference member when the toner cartridge is mounted on the mounting portion.
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公开(公告)号：US11927898B2
公开(公告)日：2024-03-12
申请号：US18023665
申请日：2021-01-27
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Hojin Jang , Jongin Kim , Jonghyun Park , Janghyun Son
IPC: G03G15/08
CPC classification number: G03G15/0898 , G03G15/0886 , G03G2215/0692
Abstract: An example developing device includes a developing case, a developer supply portion connected to the developing case and including a supply port, a shutter to open or close the supply port, and a sealing member attached to an outer circumferential portion of the developer supply portion to prevent leakage of a developer through the developer supply portion and the shutter. The developer supply portion includes a slit portion adjacent to the supply port. The sealing member includes a film member having an opening in communication with the supply port, a fixing portion inserted into the slit portion, and an elastic sealing member. An upper surface of the film member contacts an inner circumferential portion of the shutter, and the elastic sealing member is attached onto a lower surface of the film member along an edge of the opening and surrounds the supply port.
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公开(公告)号：US20240361721A1
公开(公告)日：2024-10-31
申请号：US18565811
申请日：2021-10-07
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Jonghyun Park , Jonghwa Park , Hojin Jang
CPC classification number: G03G21/10 , G03G15/0806 , G03G15/0893 , G03G15/556
Abstract: A developing device includes a conveying member to circulate a developer in a housing, a developer discharge portion extending from one end portion of the housing to form a passage through which surplus developer is discharged from the housing, and a discharge regulation member located on an upstream side of the developer discharge portion with respect to a direction in which the developer is conveyed to the developer discharge portion by the conveying member to partially block a conveying path of the developer. The discharge regulation member includes a lower end portion and an upper end portion arranged apart from a bottom and an upper wall of the conveying path, respectively.
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4.发明授权公开(公告)号：US11835884B1
公开(公告)日：2023-12-05
申请号：US18075629
申请日：2022-12-06
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Gun Heo , Hojin Jang , Jaerae Lee
IPC: G03G15/08
CPC classification number: G03G15/0856 , G03G15/0886
Abstract: An example image forming apparatus includes a main body having a guide frame to guide a toner cartridge on a path for detachment and attachment, a sensor to sense a remaining toner level of the toner cartridge, and a shutter member disposed to move along the guide frame in association with the attachment and detachment of the toner cartridge. In response to separation of the toner cartridge from the guide frame, the shutter member is movable to a first position covering the sensor and, in response to the toner cartridge being mounted on the guide frame, the shutter member is movable to a second position to open the sensor.
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Patent Agency Ranking
5.发明授权公开(公告)号：US11237500B2
公开(公告)日：2022-02-01
申请号：US17258927
申请日：2019-05-24
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Mitsuru Oikawa , Jong-Hyun Park , Hojin Jang
Abstract: A developing device including a developing sleeve installed in a developing chamber and partially exposed to an outside of the developing chamber through an opening portion, a magnetic member located inside a developing sleeve and including a separating pole and a receiving pole, the separating pole being located on a downstream side of the opening portion based on a rotating direction of the developing sleeve to separate a developing agent from the developing sleeve, and the receiving pole being located on a downstream side of the separating pole to attach the developing agent to the developing sleeve, and a magnet located between an inner wall of the developing chamber and the magnetic member to face a region between the separating pole and the receiving pole and having same magnetic polarity same as the separating pole and the receiving pole.
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公开(公告)号：US11199811B2
公开(公告)日：2021-12-14
申请号：US17258021
申请日：2019-05-23
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Hojin Jang , Jong-Hyun Park , Donggeun Lee
Abstract: The developing device includes a developing roller, a developer conveying unit, a developer discharge unit, and an air discharge port. The developer conveying unit includes a developing chamber provided with the developing roller and extending in a longitudinal direction of the developing roller, a stirring chamber arranged in parallel to the developing chamber, and a barrier wall having a first communication port and a second communication port, at respective ends in the longitudinal direction, to connect the developing chamber with the stirring chamber. The developer discharge unit extends from the developer conveying unit in the longitudinal direction of the developing roller and includes a developer discharge port to discharge excess developer. The air discharge port is to house a filter to filter a developer, the air discharge port being provided between the developer conveying unit and the developer discharge unit to discharge air in the developer conveying unit.
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7.发明申请公开(公告)号：US20210294244A1
公开(公告)日：2021-09-23
申请号：US17258927
申请日：2019-05-24
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Mitsuru Oikawa , Jong-Hyun Park , Hojin Jang
IPC: G03G15/09
Abstract: A developing device including a developing sleeve installed in a developing chamber and partially exposed to an outside of the developing chamber through an opening portion, a magnetic member located inside a developing sleeve and including a separating pole and a receiving pole, the separating pole being located on a downstream side of the opening portion based on a rotating direction of the developing sleeve to separate a developing agent from the developing sleeve, and the receiving pole being located on a downstream side of the separating pole to attach the developing agent to the developing sleeve, and a magnet located between an inner wall of the developing chamber and the magnetic member to face a region between the separating pole and the receiving pole and having same magnetic polarity same as the separating pole and the receiving pole.
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公开(公告)号：US20210278802A1
公开(公告)日：2021-09-09
申请号：US17258021
申请日：2019-05-23
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Hojin Jang , Jong-Hyun Park , Donggeun Lee
Abstract: The developing device includes a developing roller, a developer conveying unit, a developer discharge unit, and an air discharge port. The developer conveying unit includes a developing chamber provided with the developing roller and extending in a longitudinal direction of the developing roller, a stirring chamber arranged in parallel to the developing chamber, and a barrier wall having a first communication port and a second communication port, at respective ends in the longitudinal direction, to connect the developing chamber with the stirring chamber. The developer discharge unit extends from the developer conveying unit in the longitudinal direction of the developing roller and includes a developer discharge port to discharge excess developer. The air discharge port is to house a filter to filter a developer, the air discharge port being provided between the developer conveying unit and the developer discharge unit to discharge air in the developer conveying unit.
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9.发明授权公开(公告)号：US11016415B1
公开(公告)日：2021-05-25
申请号：US17049557
申请日：2019-02-25
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Hojin Jang , Seil Kwon , DaeHo Kim , Jong-Hyun Park , Jong-Hwa Park
IPC: G03G15/08
Abstract: A development cartridge includes a developer housing to receive a developer. The developer housing includes a developing chamber to have a developing roller in the developing chamber and extending in a longitudinal direction of the developing roller, an agitating chamber located parallel to the developing chamber, and a partition wall to separate the developing chamber from the agitating chamber, the partition wall having a first communication hole and a second communication hole respectively formed at both end portions of the partition wall in the longitudinal direction, through which the developing chamber and the agitating chamber are to communicate through. A developer inlet, through which the developer is injectable into the developer housing, for the developer housing to receive the developer, is formed in the developer housing at a position corresponding to the first communication hole or the second communication hole. The developer inlet is closeable with a cap.
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