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    DEVELOPMENT CARTRIDGE AND ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS USING THE SAME
    31.
    发明申请
    DEVELOPMENT CARTRIDGE AND ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS USING THE SAME 审中-公开

    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.

    Toner for developing electrostatic latent image
    36.
    发明授权
    Toner for developing electrostatic latent image 有权

    公开(公告)号：US09964875B2

    公开(公告)日：2018-05-08

    申请号：US15317014

    申请日：2015-07-14

    Applicant: S-PRINTING SOLUTION CO., LTD.

    Inventor： Se-young Yoon ,  Hae-ree Joo ,  Sung-jun Cho

    IPC: G03G9/08 ,  G03G9/107 ,  G03G9/087 ,  G03G9/09

    CPC classification number: G03G9/0825 ,  G03G9/0819 ,  G03G9/0821 ,  G03G9/08755 ,  G03G9/08782 ,  G03G9/0904 ,  G03G9/09708 ,  G03G9/09725 ,  G03G9/10 ,  G03G9/1075

    Abstract: Disclosed is a toner for developing an electrostatic latent image, the toner comprising a plurality of toner particles, each toner particle includes: a core particle that contains a binding resin, a coloring agent, and a releasing agent; and an external additive attached to the surface of the core particle, wherein the toner has two endothermic peaks in a heat curve, which is obtained at the time of the secondary temperature rise in differential scanning calorimetry of the toner, and a stepped endothermic curve; and first and second melting temperatures, which are determined to be the locations of vertices of the two endothermic peaks, a glass transition temperature, which is determined to be the midpoint of a linear portion of the stepped endothermic curve, and first and second heat of melting, which are determined to be the areas of the two endothermic peaks, satisfy the condition set forth herein.

    Cartridge support member and image forming apparatus having the same
    39.
    发明授权
    Cartridge support member and image forming apparatus having the same 有权

    公开(公告)号：US09933751B2

    公开(公告)日：2018-04-03

    申请号：US15648926

    申请日：2017-07-13

    Applicant: S-PRINTING SOLUTION CO., LTD.

    Inventor： Ho-hyun Hwang

    IPC: G03G21/18

    CPC classification number: G03G21/1867 ,  G03G21/1633 ,  G03G21/1853 ,  G03G21/1871 ,  G03G2221/1684 ,  G03G2221/1869

    Abstract: An image forming apparatus includes a main body, a cartridge support member configured to have a process cartridge provided with first electrical contact points attachable thereto, and a holder configured to have second electrical contact points which are electrically contactable to the first electrical contact points. When the cartridge support member is moved from a first position to a second position in the main body, the second electrical contact points are electrically connected to the first electrical contact points while the cartridge support member is at the first position, while the cartridge support member moves between the first position and the second position, and while the cartridge support member is at the second position. The holder electrically disconnects the second electrical contact points from the first electrical contact points when the cartridge support member is moved to a third position outside the main body.

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