| 摘要 |
A disk cartridge comprising a disk medium fixedly attached on a center core, a casing with a spindle hole through which the center core is exposed to the exterior, and a dust-removing liner. The center core includes a large-diameter portion, which has an outside diameter greater than the inside diameter of the spindle hole of the casing, a thickness greater than that of the dust-removing liner, and a surface on which said disk medium is fixedly attached.
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