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    • 3. 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。