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    • 3. 发明授权
    • Cylindrical rotating member having a support mechanism exhibiting little
unevenness in rotation, and image forming apparatus
    • 具有显示旋转不均匀的支撑机构的圆柱形旋转构件和图像形成装置
    • US06011942A
    • 2000-01-04
    • US84947
    • 1998-05-28
    • Hajime TaniguchiTooru WatanabeIkuro ChimotoAkihiro NakamuraMasato Togami
    • Hajime TaniguchiTooru WatanabeIkuro ChimotoAkihiro NakamuraMasato Togami
    • G03G21/00F16C23/02F16C23/04G03G15/00
    • G03G15/757
    • It is desirable if the lengthwise center axis of a cylindrical rotating member such as a photoreceptor drum is aligned exactly with the center axes of the support shafts. However, as it is impossible to eliminate manufacturing errors in components, it is unavoidable for there to be a slight angle of intersection between the center axis of the cylindrical rotating member and the center axes of the support shaft. Consequently, the object of the present invention is to provide a support mechanism for the cylindrical rotating member whereby the cylindrical rotating member exhibits little unevenness of rotation. When lengthwise axis of the cylindrical rotating member forms angle of intersection .alpha. with lengthwise axis of shaft, this angle .alpha. is absorbed by the slight space between shaft and pierced hole of a rotation transmission member, as well as by the gap between the rotation transmission member and bearing of the cylindrical rotating member, so that the center axis of the cylindrical rotating member is fixed in a set position, and the outer circumference of the cylindrical rotating member moves in a predetermined perfectly circular path.
    • 如果诸如感光鼓的圆柱形旋转构件的纵向中心轴与支撑轴的中心轴准确对准,则是理想的。 然而,由于不可能消除部件中的制造误差,因此在圆筒状的旋转部件的中心轴与支承轴的中心轴之间存在微小的交叉点是不可避免的。 因此,本发明的目的是提供一种用于圆柱形旋转部件的支撑机构,由此圆柱形旋转部件显示出很小的旋转不均匀性。 当圆柱形旋转构件的纵向轴线与轴的纵向轴线形成交点α时,该角度α被旋转传递构件的轴和穿孔之间的微小空间以及旋转传递构件之间的间隙吸收 和圆柱形旋转构件的轴承,使得圆柱形旋转构件的中心轴线固定在设定位置,并且圆筒形旋转构件的外圆周以预定的完全圆形路径移动。