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    • 10. 发明申请
    • FIXING DEVICE AND IMAGE FORMING APPARATUS
    • 固定装置和图像形成装置
    • US20170017182A1
    • 2017-01-19
    • US15202859
    • 2016-07-06
    • Kazuya SAITOYasunori ISHIGAYAYutaka IKEBUCHIKeitaro SHOJIRyohei MATSUDA
    • Kazuya SAITOYasunori ISHIGAYAYutaka IKEBUCHIKeitaro SHOJIRyohei MATSUDA
    • G03G15/20
    • G03G15/2053G03G15/2042
    • A fixing device includes a primary heat generator and a secondary heat generator to heat an endless belt and a temperature detector, disposed opposite the secondary heat generator, to detect a temperature of the endless belt. The secondary heat generator includes an inboard edge and an outboard edge disposed outboard from the inboard edge in an axial direction of the endless belt. The secondary heat generator has an inboard length defined between a center of a detection span of the temperature detector and the inboard edge in the axial direction of the endless belt. The secondary heat generator further has an outboard length defined between the center of the detection span of the temperature detector and the outboard edge in the axial direction of the endless belt. The secondary heat generator defines a ratio of the outboard length to the inboard length that is greater than 7/3.
    • 固定装置包括:一次发热体和二次发热体,用于加热与二次发热体相对设置的环形带和温度检测器,以检测环形带的温度。 二次发热器包括沿环形带的轴向方向设置在内侧边缘外侧的内侧边缘和外侧边缘。 二次发热器具有限定在温度检测器的检测范围的中心和环形带的轴向方向上的内侧边缘之间的内侧长度。 次级发热器还具有限定在温度检测器的检测范围的中心与环形带的轴向方向外侧边缘之间的外侧长度。 二次发热器定义了外侧长度与内侧长度的比值大于7/3。