| 摘要 |
PROBLEM TO BE SOLVED: To sufficiently suppress dust from entering into a cartridge main body without increasing cost so much in a disk cartridge in which a recording disk is stored in the cartridge main body. SOLUTION: In the disk cartridge 1A with the cartridge main body 2 in which an opening is formed, a shutter 3 made possible to be slid to the cartridge main body 2 and capable of opening/closing the opening, it is further provided with a thickness direction pressurizing means 43 and a radius direction pressurizing means to pressurize the shutter 3 to the cartridge main body 2 in the thickness direction of the cartridge main body 2 and the radius direction of the recording disk at a state that the opening is closed by the shutter 3. A flange part 63 to project toward the side of the cartridge main body 3 is further provided to a peripheral part of the shutter 3.
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