| 摘要 |
<p>PURPOSE:To maintain pressing force of a tension pole constant and to make assembling operation easy regardless of loading conditions by connecting a tension arm and a back tension arm which is provided in a freely rotatable state so as to apply breaking force to a supply reel with a link made of a rigid body. CONSTITUTION:The loading posts 9a, 9b which is provided around the magnetic head 3 and the rotary guides 10, 14 of left and right side are located inside the tape 2 in the cassette, in the state of loading the cassette tape 12. When the posts 9a, 9b are advanced and the guides 10, 14 are rotated around the supporting points 10a, 14a, the tape 2 is drawn out from the cassette 12, and the tension arm 5 is rotated in the direction of pressing the tape 2 via the tension spring 8. The back tension arm 6 is also rotated so as to apply the break to the reel 4 via the link 7. Therefore, tension of the tape contacting to the head 3 is kept adequate value.</p> |
