| 摘要 |
A device comprising a head carriage disposed on a turntable rotating at a constant rate and adapted to move at a constant pitch toward the central portion of the turntable, and a magnetic recording and reproducing head and an erasing head mounted on the head carriage with the erasing head being positioned anterior to the recording and reproducing head. The movement of the two heads which is occasioned by the movement of the head carriage is controlled so that the heads may move from the peripheral portion of the turntable toward the central portion thereof while tracing a spiral path or track on a magnetic sheet which remains stationary whereby a recording on the magnetic sheet can be erased and a new recording can be made or the recording can be reproduced.
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