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    • 4. 发明授权
    • Sheet discharging device for use in an image forming apparatus
    • 用于图像形成装置的片材排出装置
    • US5422710A
    • 1995-06-06
    • US14434
    • 1993-02-05
    • Kazumi ShirasakaAkinobu NakahataMasahiro ShinoharaKenji OdaKouji Migita
    • Kazumi ShirasakaAkinobu NakahataMasahiro ShinoharaKenji OdaKouji Migita
    • B65H29/20B65H29/70G03G15/00G03G15/20
    • G03G15/2064G03G15/2028G03G15/6582
    • A sheet discharging device is used in an image forming apparatus including fixing means adopting heat roller fixing method of fusing a toner image transferred to a sheet so as to fix the same on the sheet while transporting the sheet by heating and pressing rollers rotated at a specified speed. This sheet discharging device is provided with a sheet discharger including first and second rollers and arranged downstream from the fixing device, a contact point of the first and second rollers being located toward the pressing roller from a tangent line on a point of a circumferential surface of the heat heating roller which intersects with a straight line connecting centers of the heating and pressing rollers, and a drive mechanism for driving the first roller and the heating roller so that a speed of the first roller at the circumferential surface thereof is greater than that of the healing roller. Accordingly, a sheet curled in the fixing device can be straightened with a simple construction.
    • 在图像形成装置中使用片材排出装置,该图像形成装置包括固定装置,该定影装置采用热转印辊定影方法,该方法将转印到片材上的调色剂图像进行定影,以将其固定在片材上,同时通过加热旋转片材并按特定的 速度。 该片材排出装置设置有包括第一和第二辊并且布置在定影装置的下游的片材排出器,第一和第二辊的接触点从第一和第二辊的圆周表面的点上的切线朝向加压辊定位 与加热和加压辊的中心连接的直线交叉的加热辊,以及用于驱动第一辊和加热辊的驱动机构,使得第一辊在其圆周表面处的速度大于 愈合辊。 因此,能够以简单的结构使卷曲在定影装置中的片材变直。