| 摘要 |
<p>PURPOSE:To reduce the driving force of a head baseplate and to reduce the titled mechanism in size by moving a switching board in accordance with the tape travelling direction to move only one pinch roller on the forward side or the reverse side. CONSTITUTION:In the stop state, a switching board 9 is moved to the forward position on the right side. When a driving board 13 is driven upwards, both the switching board 9 and a head base plate 15 are moved unitedly with the driving board 13 and pinch roller shafts 8a, 8b abutted on the shoulder of the head base plate 15 are also moved upwards. When the head base plate 15 reaches the play position and the driving board 13 is ascended moreover, a shaft 10a fitted to a pinch driving board 4a is abutted on the right frong edge of the switching board 9, the pinch driving board 4a is rotated and the pinch roller 1a is brought into contact with the capstan 11a, but since the switching board 9 is moved right, the shaft 10a of the pinch driving board 4b is not abutted on the switching board 9. Therefore, the pinch roller 1b is not brought into contact with the capstan 11b.</p> |
