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    • 67. 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。
    • 68. 发明授权
    • Electrophotographic image forming apparatus and its high voltage power
source device
    • 电子照相成像装置及其高压电源装置
    • US5365316A
    • 1994-11-15
    • US107593
    • 1993-08-18
    • Hajime MotoyamaJunichi KimizukaTakeji GimaAkihiro Nakamura
    • Hajime MotoyamaJunichi KimizukaTakeji GimaAkihiro Nakamura
    • G03G15/00G03G15/02G03G15/06G03G15/08
    • G03G15/80G03G15/0283G03G15/065
    • An image forming apparatus includes: a photosensitive drum; a charging unit which is brought into contact with the drum and charges it; a developing unit for obtaining a visible image from an electrostatic latent image formed on the drum; a charge high voltage generation circuit for supplying an output which is obtained by multiplexing a high AC voltage with a high DC voltage with the charging unit; a development high voltage generation circuit for supplying an output which is obtained by multiplexing a high AC voltage with a high DC voltage to the developing unit; and a sync circuit for synchronizing a high voltage alternating current of the charge high voltage generation circuit and a high voltage alternating current of the development high voltage generation circuit. A ratio of the frequencies of the high voltage alternating currents of the development high voltage generation circuit and the charge high voltage generation circuit is set to an integer. The high AC voltages are derived from the signals having an integer frequency dividing ratio which are obtained by frequency dividing the same clock signal.
    • 图像形成装置包括:感光鼓; 充电单元,其与鼓接触并对其进行充电; 显影单元,用于从形成在所述滚筒上的静电潜像获得可视图像; 一个充电高电压产生电路,用于提供通过将高交流电压与高直流电压复用而获得的输出与充电单元; 用于向显影单元提供通过将具有高DC电压的高AC电压复用获得的输出的显影高电压产生电路; 以及同步电路,用于使充电高压发生电路的高电压交流电和显影高压发生电路的高压交流电流同步。 显影高压发生电路和充电高压发生电路的高压交流电流的频率之比设定为整数。 高交流电压由具有通过对相同时钟信号进行分频而获得的整数分频比的信号导出。