| 摘要 |
<p>PURPOSE:To prevent a tape from flawing by energizing a gap between a bearing part and a supporting shaft in one direction and making an outer circumferential part of a post in contact with the tape approximately parallel with the supporting shaft when an arm is inclined. CONSTITUTION:The post 8 tapered to be large in diameter on top and small in diameter on bottom is embedded vertically on the arm 3. Then, when the tape 7 is brought into contact with the post 8, the arm 3 is inclined by receiving force in the direction of B, and incidentally the post 8 is also inclined, whereas a part in contact with the tape 7 is tapered to provide the post 8 with an inclining amt. of taper in advance, so that no inclination takes place against the tape 7. Consequently, a traveling course of the tape 7 is remained unchanged. Then, even when the part in contact with the tape 7 is changed in position along the outer circumferential surface of the post 8, the outer circumferential part of the post 8 to be contacted with the tape 7 is never inclined against the tape 7, although the inclining direction of the arm 3 is changed. By this method, the upper edge and lower edge of the tape can be prevented from flawing due to a change in tape traveling height.</p> |
