| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a disk clamp mechanism such that a disk is held while being pressure-welded on a turntable and stable driving of the disk can be performed. <P>SOLUTION: In a state that a cylindrical member 28 is fixed to an upper portion of a rotation axis 22 and a clamper 30A pressure welds an optical disk 40 on a turntable, a first lower surface portion 28c of the cylindrical member that faces a clamp magnet 27 in an axial direction is positioned lower than a facing surface portion 33 of the clamper that faces the clamp magnet 27 in the axial direction. <P>COPYRIGHT: (C)2013,JPO&INPIT |
