| 摘要 |
PROBLEM TO BE SOLVED: To provide a recording disk cartridge in which rotation operation can be stabilized even if the number of recording disk media is increased. SOLUTION: A magnetic disk cartridge 1 is provided with a plurality of flexible magnetic disk media 41, center cores 42 provided at a center part of the magnetic disk media 41 to rotate integrally these magnetic disk media 41, and a cartridge case 2 housing rotatably the magnetic disk media 41 and the center cores 42, and having an opening part 16 for exposing the center core 42 of a lower side out of laminated center cores 42 to the outside. And this magnetic disk cartridge 1 is provided with a compression coil spring 46 energizing a whole laminated center cores 42 to the opening part 16 side. COPYRIGHT: (C)2006,JPO&NCIPI
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