公开(公告)号：US09897937B2

公开(公告)日：2018-02-20

申请号：US15361961

申请日：2016-11-28

Applicant: S-PRINTING SOLUTION CO., LTD.

Inventor： Tae-il Jung ,  Sung-dae Kim ,  Tae-hee Kim ,  Pil-seung Oh

IPC: G03G15/08

CPC classification number: G03G15/0865 ,  G03G15/757 ,  G03G21/1857 ,  G03G2221/1657

Abstract: A development cartridge attachable to and detachable from a main body of an image forming apparatus includes a photosensitive unit including a photosensitive drum, a developing unit including a developing roller and rotatably coupled to the photosensitive unit with respect to a hinge axis, a driving gear configured to rotate in a first direction for a printing operation or a second direction opposite the first direction, a driving member positioned coaxially with the driving gear and configured to be rotated by the driving gear, a first one-way clutch configured to connect the driving member with the driving gear only when the driving gear rotates in the second direction, and a first moving member configured to be connected to the driving member so as to reciprocate between a first location where a development nip is formed and a second location where the development nip is released.