| 摘要 |
<p>The device has a head plate (74), which advances and returns with respect to the magnetic tape. Advanced in the operating position, it locks, can be unlocked again and returned into a position of rest. There are two operator-control rods (33, 34) for operating device functions, which can be locked in the actuated position by means of a locking mechanism (41). A tape-stop detection mechanism (40) is provided for the unlocking of the head plate (74). If the tape stops, the said mechanism is brought into an operating position, from which it exerts an adjusting force on the head plate (74) even before the latter is unlocked. The locking mechanism (41) has an adjusting element (41g), which in the locked position of the locking mechanism (41) lies in the adjusting path of the head plate (74) between the operating position and the position of rest. Owing to the adjusting force of the tape-stop detection mechanism (40) on the head plate, the adjusting element (41g) is impinged by an actuating element (74c) of the head plate (74), as a result of which an unlocking takes place of the locking mechanism (41) and consequently of the operator-control rod (33, 34) before the unlocking of the head plate. <IMAGE></p> |
