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    • 56. 发明授权
    • Fixing apparatus
    • 固定装置
    • US06724999B2
    • 2004-04-20
    • US10126618
    • 2002-04-22
    • Kazuhiko KikuchiToshiya InomataOsamu TakagiSatoshi Kinouchi
    • Kazuhiko KikuchiToshiya InomataOsamu TakagiSatoshi Kinouchi
    • G03G1520
    • G03G15/2042G03G2215/2006
    • A fixing apparatus is provided with a fixing device which includes a fixing roller and a pressing roller pressed against the fixing roller, the fixing roller and the pressing roller defining a region through which sheets of various sizes pass while being heated, an induction-heating device which heats the fixing roller by induction heating and which includes first and second excitation coil units provided inside the fixing roller and spaced from each other by a predetermined distance in an axial direction of the fixing roller, and a control device which varies an output applied to the first and second excitation coils in accordance with a surface temperature as measured in the axial direction of the fixing roller. The first and second excitation coil units have widths which are greater than those of maximal-size sheets by 20 to 40 mm.
    • 定影装置设置有定影装置,该定影装置包括定影辊和压靠在定影辊上的加压辊,定影辊和加压辊限定加热时各种尺寸的片材通过的区域,感应加热装置 其通过感应加热来加热定影辊,并且包括设置在定影辊内部的第一和第二激励线圈单元,并且在定影辊的轴向方向上彼此隔开预定距离;以及控制装置,其改变施加到 第一和第二激励线圈根据在定影辊的轴向方向上测量的表面温度。 第一和第二励磁线圈单元的宽度大于最大尺寸的片材的宽度为20至40mm。
    • 60. 发明申请
    • IMAGE FORMING APPARATUS
    • 图像形成装置
    • US20100258557A1
    • 2010-10-14
    • US12755015
    • 2010-04-06
    • Satoshi KinouchiKazuhiko KikuchiHiroshi NakayamaHiroaki YamauchiShuji Yokoyama
    • Satoshi KinouchiKazuhiko KikuchiHiroshi NakayamaHiroaki YamauchiShuji Yokoyama
    • H05B6/04
    • G03G15/2064G03G2215/2032
    • A heating fuser includes: a rotating member configured to heat a toner transferred onto a sheet; a first coil body configured to generate a first magnetic field for inducing eddy-current in a first area including the center in a rotation axis direction of the rotating member; second coil bodies configured to generate second magnetic fields for inducing eddy-current in second areas of the rotating member adjacent to the first area in the rotation axis direction; third coil bodies located to extend over the first and second coil bodies when viewed in a direction orthogonal to the rotation axis direction; and a driving circuit configured to drive the third coil bodies between a first state in which the third coil bodies generate magnetic fields for weakening the first magnetic field and a second state in which the third coil bodies generate magnetic fields for strengthening the second magnetic fields.
    • 加热定影器包括:旋转构件,被配置为加热转印到片材上的调色剂; 第一线圈体,其构造成在包括所述旋转构件的旋转轴线方向的中心的第一区域中产生用于感应涡电流的第一磁场; 第二线圈体,被配置为产生第二磁场,用于在所述旋转构件的与旋转轴线方向上的所述第一区域相邻的第二区域中感应涡流; 当沿与所述旋转轴线方向正交的方向观察时,所述第三线圈体在所述第一和第二线圈体上延伸; 以及驱动电路,被配置为在所述第三线圈体产生用于削弱所述第一磁场的磁场的第一状态和所述第三线圈体产生用于加强所述第二磁场的磁场的第二状态之间驱动所述第三线圈体。