| 摘要 |
When the rotating direction of a driving rotator driven by a motor is changed in synchronism with a change of the rotating direction of the motor, a rocking member coaxial with the driving rotator rocks to cause an intermediate rotator supported by the rocking member to leave one working rotator on one reel shaft side and to engage the other working rotator on the other reel shaft side, thereby transmitting the turning force of the driving rotator to the other reel shaft. The rocking member shifts a transmission mechanism to a position where the transmission mechanism is allowed to engage the driving rotator as the rocking member rocks, and then the turning force of the driving rotator is transmitted to a pinch roller shift mechanism through the transmission mechanism. When the pinch roller shift mechanism is actuated, two pinch rollers shift their positions relative to their corresponding capstans, thereby changing the direction of magnetic tape feed.
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