| 摘要 |
A protective cartridge is provided for a disc record in a disc playback/record system. The protective cartridge is provided with a compliant annular section and a central portion. A first annular magnet for use in holding the disc record against a turntable, while the turntable rotates, is positioned in the central portion. A ram which includes a second annular magnet is arranged such that its polarity is opposite to the first magnet. When the ram is lowered an engagement of the disc record is effected. That is, the second magnet repels the first magnet to cause the first magnet to hold the disc record against the turntable.
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