| 摘要 |
Cassette tape protective means, comprises a tape cassette having a casing in which is a magnetic tape provided with a conductive leader and a conductive trailer at opposite ends. The casing has an opening for exposing the tape to parts of an end-of-tape sensing circuit in a cassette recorder. The end-of-tape sensing circuit includes a pair of spaced wiper contacts, a relay and an alarm device such as a lamp or buzzer. The drive motor of the recorder can be connected in circuit with the wiper contacts and a relay for automatically stopping the motor when the wiper contacts are reached by the trailer and leader.
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