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

IPC: G03G21/18 ,  G03G15/08

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.

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

IPC: G03G21/10 ,  G03G15/00 ,  G03G15/08

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.

公开(公告)号：US11774877B2

公开(公告)日：2023-10-03

申请号：US17792779

申请日：2020-11-20

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： Jonghyun Park ,  Seil Kwon ,  Jeonghyun Lee

IPC: G03G15/10 ,  G03G15/08

CPC classification number: G03G15/0856

Abstract: A developer cartridge includes a housing to accommodate a developer and including a developer outlet, and a sensing portion that forms a sensing area to detect whether or not the developer inside the housing is miming out. The sensing portion is recessed into a portion of a lower wall of the housing accordingly having a thickness less than a thickness of a remaining portion of the lower wall.

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.