| 摘要 |
A second inclined surface ( 84 c) which abuts against a recording disk of a chuck pawls ( 84 ) of a recording disk holding mechanism ( 80 ), and a third inclined surface ( 84 d) which is a curved surface for guiding chucking motion of the chuck pawls ( 84 ) are provided. A boundary between the second inclined surface ( 84 c) and the third inclined surface ( 84 d) is formed with a stepped recess approaching a base.
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