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    • 4. 发明授权
    • Fusing apparatus and image forming apparatus
    • 定影装置和成像装置
    • US08204421B2
    • 2012-06-19
    • US12753409
    • 2010-04-02
    • Chikara HiraokaYoshihiro Fukuhata
    • Chikara HiraokaYoshihiro Fukuhata
    • G03G15/20
    • G03G15/2053G03G15/2028G03G15/206G03G2215/2009G03G2215/2035G03G2215/2061G03G2215/2064
    • A fusing apparatus for fusing a toner image onto a recording medium using heat and pressure includes a fusing roller; an endless pressing belt disposed opposite the fusing roller; and a pressing member for pressing the endless pressing belt onto the fusing roller. A recording medium with a transferred toner image is passed through a fusing nip between the fusing roller and the pressing belt. The fusing roller includes positive and negative crown portions along the axial direction. The pressing member includes convex and concave surface portions along the longitudinal direction. When the pressing member is pressed onto the fusing roller, the positive and negative crown portions of the fusing roller are engaged with the concave and convex surface portions, respectively, of the pressing member. The pressing member exerts a greater pressing force on the fusing roller at a central portion than at an end portion.
    • 使用热和压力将调色剂图像定影到记录介质上的定影装置包括定影辊; 设置在定影辊对面的环状压紧带; 以及用于将环形挤压带按压到定影辊上的按压构件。 具有转印的调色剂图像的记录介质通过定影辊和加压带之间的定影辊隙。 定影辊包括沿轴向的正和负的冠部。 按压构件包括沿着纵向方向的凸表面部分和凹面部分。 当按压构件被按压到定影辊上时,定影辊的正和负冠部分别与按压构件的凹凸表面部分接合。 按压构件在中心部分比在端部处对定影辊施加更大的按压力。
    • 7. 发明授权
    • Electrophotographic apparatus and belt fixing device with non-uniform
nip pressure
    • 电子照相设备和胶带固定装置具有不均匀的压区压力
    • US5778294A
    • 1998-07-07
    • US710507
    • 1996-09-18
    • Chikara HiraokaJunichi MatsunoHiromitsu Fukuda
    • Chikara HiraokaJunichi MatsunoHiromitsu Fukuda
    • G03G15/20
    • G03G15/2064G03G2215/2016G03G2215/2032G03G2215/2041G03G2215/2074
    • In a color electrophotographic apparatus, a belt fixing device which includes a pressure roller and a plurality of belt transport rollers for rotating a belt are provided for fixing unfixed toner. In the belt fixing device, a heating roller and a driving roller, which constitute the belt transport rollers, are always kept in contact with the pressure roller so that a fixing belt is curved in contact with the pressure roller, and after fused toner has been cooled, the driving roller applies pressure to the toner to separate the toner from the belt. According to this arrangement, a small-sized fixing device is achieved in which no silicone oil is needed and in which the running stability of sheets and the fixing belt is superior so that a high-quality fixed image can be obtained. A color electrophotographic apparatus using such a fixing device is also achieved.
    • 在彩色电子照相设备中,提供一种带固定装置,其包括加压辊和用于旋转带的多个带传送辊,用于固定未定影的调色剂。 在带固定装置中,构成皮带传送辊的加热辊和驱动辊总是与加压辊保持接触,使得定影带与加压辊接触弯曲,并且在熔融调色剂已经被 驱动辊对调色剂施加压力以将调色剂与带分离。 根据该结构,实现了小型的定影装置,其中不需要硅油,其中片材和定影带的运行稳定性优异,从而可以获得高质量的固定图像。 还实现了使用这种定影装置的彩色电子照相设备。
    • 8. 发明授权
    • Fixing device and image forming apparatus
    • 固定装置和成像装置
    • US09116476B2
    • 2015-08-25
    • US13338765
    • 2011-12-28
    • Yoshiharu TakahashiChikara HiraokaTamotsu IkedaKohta SakayaYoshihiro Kawakami
    • Yoshiharu TakahashiChikara HiraokaTamotsu IkedaKohta SakayaYoshihiro Kawakami
    • G03G15/20
    • G03G15/2028
    • A fixing device, including a fixing member; an opposing member contacting the fixing member to form a fixing nip; plural separation assisting members; a contact direction biasing member contacting an end of the auxiliary separation members to the surface of the fixing member; a contact and release switching member switching contacting the end of the auxiliary separation members to the surface of the fixing member and releasing the end of the auxiliary separation members therefrom; a fixing exit guide member guiding a recording medium to a discharge direction and separated from the fixing member by the separation assisting member; a first rotating member near the auxiliary separation members downstream from an end thereof; and a second rotating member guiding a recording medium guided by the fixing exit guide member in the recording medium conveyance direction while rotating.
    • 一种固定装置,包括固定构件; 与所述固定构件接触以形成定影辊隙的相对构件; 多个分离辅助构件; 接触方向偏压构件,其与所述辅助分离构件的端部接触所述固定构件的表面; 接触释放切换构件将辅助分离构件的端部接触到固定构件的表面并且从其中释放辅助分离构件的端部; 固定出口引导构件,其将记录介质引导到排出方向,并由所述分离辅助构件与所述固定构件分离; 在辅助分离构件的一端的下游附近的第一旋转构件; 以及第二旋转构件,其在旋转时引导由所述定影出口引导构件在所述记录介质输送方向上引导的记录介质。