| 摘要 |
There is provided a disk detaching/attaching unit which reduces a load on a disk and a drive source when detaching or attaching the disk. The disk detaching/attaching unit for a magnet chuck includes a plate member which moves in a disk detaching/attaching direction perpendicular to a rotating plane of the disk and having an edge portion which abuts against the vicinity of the center of the disk magnetically chucked on the magnet chuck, and plate member drive means for moving the plate member between a waiting position where the edge portion of the plate member is situated below the chucked disk and a delivery position where the disk is detached and raised up from the magnet chuck so as to detach the disk from the magnet chuck or attach it thereto.
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