| 摘要 |
In order to decrease the total thickness of an optical disc apparatus the optical disc apparatus is provided with a structure in which an optical disc contacts the surface of a top cover facing the optical disc so that the top end surface of a cylindrical protruding clamper inserted into the center hole of the optical disc protrudes from a through hole of the top cover and is positioned higher than the flat upper surface of the top cover in the disc flat surface area over the disc, while the optical disc is being chucked.
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