| 摘要 |
PURPOSE:To shorten the time for starting rotation by adhering members having a large coefft. of friction to surfaces to contact a turn table. CONSTITUTION:The members 13 consisting of polycarbonate or synthetic rubber material, etc., having the large coefft. of friction with the turn table 9, center hubs 11-a, 11-b of which are electrically turned, are mounted to the surfaces of the disks 8-a, 8-b supported by the table 9, which surfaces contact the table 9. Idling of the disk at the time of starting the turning is, therefore, suppressed and the time for starting the rotation is shortened. |
