| 摘要 |
PROBLEM TO BE SOLVED: To prevent entering of dust or the like into a cartridge main body by preventing bending deformation of a shutter member. SOLUTION: A disk cartridge is provided with: a cartridge main body 2 consisting of a lower shell 7 formed with a first opening part 24 and an upper shell 6 which abuts on to the lower shell; a rotation wheel 4 which is stored rotatably in the cartridge main body 2, stores an optical disk 3, and is formed with a second opening part 44 facing the stored optical disk 3 to the outside; and a pair of shutter plates 5a, 5b which are positioned between the lower shell 7 and the rotation wheel 4 and open these opening part 22, 44 when the first opening part 24 and the second opening part 44 are coincident linking with rotation of the rotation wheel 4. A engaging groove 50 engaging with a peripheral part of the shutter plate 5a of one side is formed in the rotation wheel 4. COPYRIGHT: (C)2005,JPO&NCIPI
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