| 摘要 |
A cassette, containing magnetic tape carried between two hubs, to be used in a recording/reproducing apparatus, comprising two built in slides each of which is capable of being operated independently from the exterior of the cassette so that it can be placed at will in one or other of two positions which respectively block or unblock hollow spaces provided in the cassette, so that each slide when the cassette is placed in the apparatus either prevents or permits a control lever to enter into the hollow space, the position of this lever controlling the possibility of the erase and record heads being operative and the reproduce head being inoperative, or vice versa.
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