| 摘要 |
<p>PURPOSE:To obtain the apparatus added with stable back tension, be coaxially locating the supply turn table and providing the gear coupled with friction to this. CONSTITUTION:At playback, the head plate 3 goes forward with the operation of the solenoid 7 and the tip of the stopper 22 is contacted to the gear 25, and the rotation of the gear 25 is blocked with gearing of the stopper 22 with the gear 25. Accordingly, at playback, the tape runs while being clipped with the capstan 19 and the pinch roller 18, the hub in the cassette 48 is turned with the movement of tape and the turn table 23 is turned via the clutch 27 with this rotation. In this case, since the rotation of the gear 25 is blocked, the load in response to the friction between the gear 25 and the turn table 23 is exerted to tape and back tension is given to tape. This back tension gives increase contact pressure for the tape to the head surface for running, allowing to give excellent running characteristics.</p> |
