| 摘要 |
PROBLEM TO BE SOLVED: To realize stable movement of a shutter member cantilevered by a cartridge main body and provided with a shutter part opening and closing an aperture part provided at one side of the cartridge main body. SOLUTION: A cartridge main body 5 formed by abutting and bonding a pair of an upper half and a lower half 3, 4 contains an optical disk 2 rotatably. The cartridge main body 5 is provided, on one side thereof, with a central aperture 12 which is a drive aperture for receiving a rotary drive means for rotary driving the optical disk 2, and a head receiving aperture 13 which is a recording and/or reproducing aperture for receiving a recording and/or reproducing means. A shutter member 35 is fitted to the cartridge main body 5, the shutter member 35 has a shutter section 36 for closing the head receiving aperture 13, and is adapted to move to open and close the head receiving aperture 13 while it is supported at the base thereof within a range of one of the lateral side thereof that is perpendicular to the above mentioned surface of the cartridge main body 5. The shutter section 36 of the shutter member 35 is supported at the front end thereof by a shutter guide member 38 arranged between the central aperture 12 and the head receiving aperture 13. COPYRIGHT: (C)2005,JPO&NCIPI
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