| 摘要 |
A disk cartridge having a small size and a sufficient portability. The disk cartridge has a size of 58 mm (L 1 )x54 mm (L 2 )x4 mm (L 3 ), a thickness less than 5 mm and a small area less than a square of 65 mm. The disk cartridge has a notch 10 formed on the insertion side and having a width of 2 mm (L 6 ) and a length of 27.5 mm (i.e., a taper portion of 6 mm (L 4 )+a straight portion of 21.5 mm (L 5 )).
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