公开(公告)号：US20140153985A1

公开(公告)日：2014-06-05

申请号：US14094530

申请日：2013-12-02

Applicant: KYOCERA DOCUMENT SOLUTIONS INC.

Inventor： Syogo USUI ,  Satoshi ISHII ,  Eiji TATSUMI

IPC: G03G15/20

CPC classification number: G03G15/2053 ,  G03G15/2042

Abstract: A fixing device includes a heating member pressed by a pressing member to form a nip part, an excitation coil generating a magnetic flux induction-heating the heating member, a magnetic core and a magnetism shielding member. The magnetic core is located opposite to the heating member across the excitation coil and provides a magnetic path passing through the excitation coil and heating member. The magnetism shielding member partially shields the magnetic path and includes a rotatable belt member allowing the magnetic flux to pass through, and a magnetism shielding layer arranged on a surface of the belt member. In the magnetism shielding layer, gap parts extending in a width direction of the belt member are arranged along a circumference direction of the belt member. When the magnetism shielding member is located to shield the magnetic path, inner wall faces of the gap part are brought into contact with each other.

Abstract translation: 定影装置包括由按压部件按压以形成夹持部的加热部件，产生感应加热加热部件的磁通线圈的励磁线圈，磁芯和磁性屏蔽部件。 磁芯与激励线圈之间的加热构件相对设置，并提供穿过励磁线圈和加热构件的磁路。 磁屏蔽构件部分地屏蔽磁路并且包括允许磁通量通过的可旋转带构件和布置在带构件的表面上的磁屏蔽层。 在磁屏蔽层中，沿着带部件的宽度方向延伸的间隙部沿着带部件的圆周方向配置。 当磁屏蔽构件被定位成屏蔽磁路时，间隙部分的内壁面彼此接触。