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    • 74. 发明授权
    • Transfer material transport device capable of exerting proper tension on
a transfer sheet
    • 能够在转印纸上施加适当张力的转印材料输送装置
    • US5428431A
    • 1995-06-27
    • US198782
    • 1994-02-18
    • Takashi AbeTakeshi Okoshi
    • Takashi AbeTakeshi Okoshi
    • B65H5/06G03G15/00G03G15/16G03G15/14
    • G03G15/165G03G15/6564
    • When an electromagnetic clutch 45 is turned on, a rotating force of a main motor 62 is transmitted to a shaft 42 of a drive roller 41a of transport rollers 41 through a double gear 49 and a high-speed gear 46. As a result, the drive roller 41a rotates so as to produce a transport speed higher than the circumferential speed of a photoreceptor drum 13, thereby looping a transfer material P. When the electromagnetic clutch 45 turned off, the rotating force of the main motor 62 is transmitted to the shaft 42 through the double gear 49 and a low-speed gear 47. Accordingly, the drive roller 41a rotates so as to produce a transport speed lower than the circumferential speed of the photoreceptor drum 13. As a result, the loop of the transfer material P gradually shrinks and finally disappears. The drive roller 41a is therefore separated from the main motor 62 by the action of a one-way clutch 48, to follow the rotation of the photoreceptor drum 13 while exerting tension on the transfer material P.
    • 当电磁离合器45接通时,主电动机62的旋转力通过双齿轮49和高速齿轮46传递到输送辊41的驱动辊41a的轴42。结果, 驱动辊41a旋转以产生高于感光鼓13的圆周速度的传送速度,从而使转印材料P环绕。当电磁离合器45关闭时,主电动机62的旋转力传递到轴 因此,驱动辊41a旋转以便产生低于感光鼓13的圆周速度的传送速度。结果,转印材料P的环路 逐渐缩小,最后消失。 因此,驱动辊41a通过单向离合器48的作用与主电动机62分离,以在感光鼓13的旋转同时在转印材料P上施加张力。