| 摘要 |
<p>A rotation shaft (15) is formed of stainless steel etc. having magnetism and has a rod-like shape. One end of the rotation shaft (15) is fixed to a face of a turntable (14) for retaining a disk. The other end of the rotation shaft (15) is formed in a partially spherical shape and rotatably supported by a thrust bearing (21) formed of an organic film. The other end of the rotation shaft (15) is opposed to an attraction magnet through the thrust bearing (21). The attraction magnet (22) axially attracts by its magnetic force the rotation shaft (15) that structures the center of rotation.</p> |
