| 摘要 |
PROBLEM TO BE SOLVED: To provide a disk cartridge center core that makes external vibration hard to propagate to the disk and that has a comparatively large disk adhering area which is lightweight for its size and which deforms hardly in machining. SOLUTION: A center core 30 is composed of a metallic frame 31 and damping rubber 32 filled inside the metallic frame 31. COPYRIGHT: (C)2004,JPO
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