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    • 6. 发明授权
    • Image heating device
    • 图像加热装置
    • US07079800B2
    • 2006-07-18
    • US10779615
    • 2004-02-18
    • Kenji AsakuraKeisuke FujimotoMasaru ImaiNoboru Katakabe
    • Kenji AsakuraKeisuke FujimotoMasaru ImaiNoboru Katakabe
    • G03G15/20
    • G03G15/2017
    • An image heating device according to an embodiment of the present invention includes a heat generator that has an outer surface and that generates heat by induction heating and a heater positioned close to the outer surface of the heat generator, the heater being configured to heat the heat generator by induction heating. A positioner is located close to an end of the heater, the positioner being configured to position the heater with respect to the heat generator. A vibration absorber is attached to the positioner and is configured, in one embodiment, to viscoelasticly absorb vibration of the heater produced by a vibration caused by an electromagnetic repulsive force acting between the heat generator and the heater when the heater heats the heat generator by induction heating.
    • 根据本发明实施例的图像加热装置包括具有外表面并通过感应加热产生热量的热发生器和靠近发热体外表面的加热器,该加热器被配置为加热热量 发电机通过感应加热。 定位器靠近加热器的端部定位,定位器被配置为相对于发热体定位加热器。 在一个实施例中,将振动吸收器安装到定位器上,并且在加热器通过感应加热发热体时,通过由发生器和加热器之间的电磁排斥力引起的振动产生的振动来粘弹性地吸收加热器的振动 加热。
    • 8. 发明申请
    • Heat-fixing device
    • 热固定装置
    • US20060072931A1
    • 2006-04-06
    • US10544936
    • 2004-02-20
    • Kenji AsakuraKeisuke FujimotoMasaru ImaiNoboru Katakabe
    • Kenji AsakuraKeisuke FujimotoMasaru ImaiNoboru Katakabe
    • G03G15/20
    • G03G15/205G03G2215/2029
    • A heat-fixing apparatus is provided that enables a rise in temperature of a heating member to be closely tracked, and an excessive rise in temperature of the heating member to be obviated, a simple configuration and irrespective of differences in the operating mode, such as immediately after a rise in temperature or during continuous operation. Different threshold values are set in accordance with different modes, such as a warm-up mode and a fixing operation mode. Threshold decisions on a switching frequency controlled by a frequency control section are made using different threshold values, according to the mode. A switching frequency of switching elements are varied so that power necessary in each mode is supplied to an exciting coil. An excessive rise in temperature is prevented in each mode by halting a switching element drive in accordance with the threshold decision.
    • 提供一种热定影装置,其能够使加热构件的温度升高得更紧密地跟踪,并且加热构件的温度过度上升以被消除,结构简单,并且与操作模式的差异无关,例如 在温度升高或连续运行之后立即。 根据不同的模式设置不同的阈值,如预热模式和定影操作模式。 根据该模式,由频率控制部分控制的开关频率的阈值决定是使用不同的阈值。 改变开关元件的开关频率,使得每个模式所需的功率被提供给励磁线圈。 通过根据阈值判定停止开关元件驱动,在每种模式下防止温度过度上升。
    • 9. 发明授权
    • Image heating device using induction heating and image forming apparatus
    • 使用感应加热和图像形成装置的图像加热装置
    • US06872925B2
    • 2005-03-29
    • US10626920
    • 2003-07-25
    • Kenji AsakuraNoboru KatakabeKeisuke FujimotoMasaru Imai
    • Kenji AsakuraNoboru KatakabeKeisuke FujimotoMasaru Imai
    • G03G15/20H05B6/14
    • H05B6/145G03G15/2017G03G15/2042G03G2215/2006
    • An image heating device includes a heat generating member that heats a body to be heated that is allowed to travel while carrying an image, an excitation unit that is provided close to the heat generating member and generates magnetic flux so as to cause the heat generating member to generate heat by electromagnetic induction, and a heat generation suppressing unit that suppresses an amount of heat generated in the heat generating member by regulating magnetic flux generated by the excitation unit. The heat generation suppressing unit suppresses heat generation of the heat generating member in a region corresponding to a region including at least a center portion of the body to be heated in a width direction. Thus, an amount of heat generated in the width direction can be regulated using a simple configuration at a reduced cost. Further, when the heat generation suppressing unit is operated, diffusion of magnetic flux into a wide area can be prevented.
    • 图像加热装置包括:加热被加热物体,其承载图像时允许行进的发热部件;设置在发热部件附近的励磁部,并产生磁通量,使发热部件 通过电磁感应产生热量;以及发热抑制单元,其通过调节由激励单元产生的磁通量来抑制发热元件中产生的热量。 发热抑制单元抑制发热体的与宽度方向上至少包含被加热体的中心部的区域对应的区域的发热。 因此,可以以简单的结构以降低的成本来调节在宽度方向上产生的热量。 此外,当发热抑制单元被操作时,可以防止磁通量扩大到广泛的区域。