| 摘要 |
<p>PURPOSE:To reduce the diameter of tape guide posts by providing an air source of supplying air to an air blow-out hole. CONSTITUTION:An air suction port 17 is so arranged as to be supplied with air from an air source 12. This air source 12 supplies air in such a state wherein the tape 8 wound to guide posts 9, 11 does not perfectly float from the tape guide posts 9, 11, i.e., under pressure of the range where the air between the tape 8 and tape guide posts 9, 11 as a lubricant assumes a boundary lubricating state. Hence, the friction resistance between the tape guide posts 9. 11 and tape 8 hardly occurs and this causes the tape 8 to run with virtually no change in its tension before and behind the posts 9, 11.</p> |
