| 摘要 |
PROBLEM TO BE SOLVED: To align the centroid of a center core to the center of rotation and to reduce flawing on the surface of the center core of a magnetic disk cartridge which is secured with the center core at the center of the disk-like flexible magnetic disk housed in a case and is provided with driving pin holes in positions where the center core is off-centered from the center of rotation. SOLUTION: The center core 3 is provided with a plurality of the driving pin holes 5A and 5B or 5A, 5B, 5C, and 5D of the same shape symmetrically with the center of rotation. COPYRIGHT: (C)2004,JPO
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