| 摘要 |
The disc cartridge of the present invention includes a cartridge body 11, 12 , shutters 21, 22 , disc holding portions and a stopper member 23 . The cartridge body has a disc window 12 w and a bottom 11 u and stores a disc 100 in a rotatable state with one side exposed through the disc window. A bottom window 11 c , 11 h is opened through the bottom so as to get the disc chucked and to allow a head to access it. The shutters 21, 22 open or shut the bottom window 11 c , 11 h. A rotational member 25 is supported by the cartridge body 11, 12 to be rotatable and interlocked with the shutters 21, 22 so as to open and close the shutters 21, 22 by rotating. The disc holding portions 21 d , 22 c , 22 d interlock with the shutters 21, 22 opening or closing to hold or release the disc 100 . The stopper member 23 is supported by the cartridge body to take a position protruding into the disc window 12 w or a non-protruding position. The disc holding portions 21 d , 22 c , 22 d interlock with the stopper member 23 , and release the disc 100 when the stopper member 23 takes the position not protruding into the disc window 12 w.
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