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    • 87. 发明授权
    • Fixing device and image forming apparatus
    • 固定装置和成像装置
    • US08811842B2
    • 2014-08-19
    • US12974852
    • 2010-12-21
    • Takamasa HaseMasanao EharaKenji IshiiTadashi OgawaSatoshi UenoHiroshi SeoTakahiro ImadaShuutaroh Yuasa
    • Takamasa HaseMasanao EharaKenji IshiiTadashi OgawaSatoshi UenoHiroshi SeoTakahiro ImadaShuutaroh Yuasa
    • G03G15/20
    • G03G15/2039G03G2215/2048
    • The fixing device using an electromagnetic induction heating (IH) method includes a fixing sleeve having a heating layer, a pressure roller to form a nip while contacting the fixing roller and rotate to drive the fixing sleeve, a temperature detector to detect a temperature on a circumference of the fixing sleeve, and an excitation coil provided near the fixing sleeve and configured to perform induction heating of the heating layer of the fixing sleeve based on the detection result from the temperature detector. The fixing device is configured to change a rotation speed of the fixing sleeve in a standby time during which the fixing sleeve, while rotating, is controlled to be heated so as to maintain a target temperature when a periodic temperature difference occurs on a circumference of the fixing rotary member and having a fluctuation amplitude larger than a predetermined value compared to the target temperature.
    • 使用电磁感应加热(IH)方法的定影装置包括具有加热层的定影套筒,压力辊,以在接触定影辊并旋转以驱动定影套筒的同时形成辊隙;温度检测器,用于检测 定影套筒周围,以及设置在定影套筒附近的激励线圈,其构造成基于来自温度检测器的检测结果对定影套筒的加热层进行感应加热。 定影装置构造成在待机时间内改变定影套筒的旋转速度,在该待机时间期间,当旋转时定影套筒被控制为加热,以便当在周边温度差发生周期性温度差时,保持目标温度 固定旋转构件并且具有比目标温度高的预定值的波动幅度。