| 摘要 |
PURPOSE:To mount a conductive cylindrical base body to a shaft for driving without using flanges and to lessen run-out by providing grooves or furrow-like projecting parts from ends toward the inside near at both ends of the inside surface of the cylindrical base body and forming tapers on the inside surfaces thereof. CONSTITUTION:The groove 2 is provided on the inside surface of the cylindrical base body of the photosensitive body 1 and the tapered parts 3 of the taper angle alpha having a vertex on the axis of the cylinder and complying with the outside surface of the imaginary circular cone are formed at both ends thereof from the ends toward the inside. The photosensitive body 1 can, therefore, be mounted to the shaft 4 for rotational driving in such a manner that the tapered parts 3 at the ends fit to the tapered parts 6 of the shaft 4 for rotational driving and that the groove 2 of the inside surface of the base body of the photosensitive body fits to the projecting part 7 of the shaft 4 for rotational driving. The photosensitive body 1 is mounted in such a manner that the photosensitive body can be rotationally driven and the run-out is decreased without previously fixing the flanges. |
