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    • 8. 发明授权
    • Fixing device and image forming apparatus including the same
    • 固定装置及包括该固定装置的图像形成装置
    • US08406668B2
    • 2013-03-26
    • US12423208
    • 2009-04-14
    • Hiroyuki Kageyama
    • Hiroyuki Kageyama
    • G03G15/20
    • G03G15/2053G03G2215/2029
    • A fixing device is provided that suppresses loss in heat radiation from both ends in a longitudinal direction which is a direction corresponding to an axial direction of a fixing roller in a heating member so as to be able to uniform distribution of a temperature in the longitudinal direction of the heating member and to attain uniform fixing capability. A planar heat generating element provided in a heating member includes electrodes at both ends in a circumferential direction so that a flowing direction of current flowing through the planar heat generating element is a direction substantially orthogonal to a longitudinal direction as a direction extending along an axial direction of a fixing roller in the planar heat generating element. The planar heat generating element is constituted so that the both ends in the longitudinal direction thereof have larger thickness than that of a center part thereof.
    • 提供一种定影装置,其能够抑制来自作为与加热部件中的定影辊的轴向对应的方向的长度方向的两端的散热损失,以能够使纵向方向上的温度均匀分布 并且获得均匀的固定能力。 设置在加热构件中的平面发热体包括沿圆周方向的两端的电极,使得流过平面发热体的电流的流动方向为与长度方向大致正交的方向,作为沿轴向延伸的方向 在平面发热元件中的定影辊。 平面发热元件的长度方向的两端的厚度比中心部的厚度大。
    • 9. 发明授权
    • Fixing device and image forming apparatus including the same
    • 固定装置及包括该固定装置的图像形成装置
    • US08150304B2
    • 2012-04-03
    • US12425433
    • 2009-04-17
    • Toshiaki KagawaHiroyuki Kageyama
    • Toshiaki KagawaHiroyuki Kageyama
    • G03G15/20
    • G03G15/2053G03G2215/2029G03G2215/2038G03G2215/2041
    • A fixing device includes a fixing belt for fixing an unfixed toner image onto a recording medium, a planar heating member for heating the fixing belt, and a pressure roller. The heating member includes a ceramic heat generating element having a PTC characteristic, and a high-thermal-conductive heat diffusion member. The fixing belt is formed in an endless shape and is supported around, at least, the high-thermal-conductive heat diffusion member, thereby to be heated. The ceramic heat generating element comes into contact with the fixing belt over the full width thereof with the high-thermal-conductive heat diffusion member interposed therebetween. The high-thermal-conductive heat diffusion member comes into contact with the fixing belt over the full width thereof and diffuses heat generated by the heat generating element, in the traveling direction of the fixing belt.
    • 定影装置包括用于将未定影的调色剂图像定影到记录介质上的定影带,用于加热定影带的平面加热构件和加压辊。 加热构件包括具有PTC特性的陶瓷发热元件和高导热散热构件。 定影带形成为环状,并且至少被支撑在高导热性热扩散构件上,从而被加热。 陶瓷发热元件在整个宽度上与定影带接触,其中介于其间的高热传导热扩散元件。 高导热性热扩散构件在整个宽度上与定影带接触,并且在定影带的行进方向上扩散由发热元件产生的热量。