Invention Grant
- Patent Title: Pressurizing unit to apply force to developing unit of development cartridge
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Application No.: US16017635Application Date: 2018-06-25
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Publication No.: US10409214B2Publication Date: 2019-09-10
- Inventor: Sang-Hoon Lee , Joon-Hee Kim
- Applicant: HP PRINTING KOREA CO., LTD.
- Applicant Address: KR Suwon-si
- Assignee: HP PRINTING KOREA CO., LTD.
- Current Assignee: HP PRINTING KOREA CO., LTD.
- Current Assignee Address: KR Suwon-si
- Agency: Staas & Halsey LLP
- Priority: KR10-2015-0187633 20151228
- Main IPC: G03G21/16
- IPC: G03G21/16 ; G03G15/06 ; G03G21/18 ; G03G15/08

Abstract:
A development cartridge detachable from a main body of an image forming apparatus includes a photosensitive unit including a photosensitive drum and a developing unit including a developing roller. The developing unit is coupled to the photosensitive unit such that the developing unit is movable to a development position where a development nip forms by contact between the developing roller and the photosensitive drum and movable to a release position where the development nip is released. The development cartridge further includes a pressurizing unit movable to a first position where the pressurizing unit applies an elastic force to the developing unit in a direction such that the developing unit is maintained in the development position, and movable to a second position where the pressurizing unit applies an elastic force to the developing unit in a direction such that the developing unit is maintained in the release position.
Public/Granted literature
- US20180307179A1 PRESSURIZING UNIT TO APPLY FORCE TO DEVELOPING UNIT OF DEVELOPMENT CARTRIDGE Public/Granted day:2018-10-25
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