公开(公告)号：US20180136604A1

公开(公告)日：2018-05-17

申请号：US15614152

申请日：2017-06-05

Applicant: S-PRINTING SOLUTION CO., LTD.

Inventor： Sang-hoon LEE ,  Seung-beom YANG ,  Seung-gweon LEE

IPC: G03G21/18

Abstract: Provided is a development cartridge mounted on a main body of an image forming apparatus. The development cartridge includes a photoconductive unit, a developing unit coupled to the photoconductive unit so as to rotate to a development position and a release position, and an elastic member that provides an elastic force to maintain the developing unit at the development position. A switching member is mounted on a rotation shaft of the developing roller to be rotatable about a rotation shaft of a developing roller. The switching member is switched to a first state where the switching member contacts an interfering portion of the photoconductive unit and rotates the developing unit to the release position and to a second state where the switching member is separated from the interfering portion and allows the developing unit to rotate to the development position due to the elastic force of the elastic member.