| 摘要 |
<p>PURPOSE:To realize the stable traveling of a tape by constituting the part of a tension detecting element where a rotary shaft comes in contact with a rotating roller of at least one line. CONSTITUTION:The rotary shaft gamma attached to the leading edge of a tension arm (i) is inclined by an angle alpha from a shaft vertical to a mechanical base (a). In such a case, the rotating roller (q) is moved so that the part of the tape (c) coming in contact with the roller (q) may be vertical to the base (a). Therefore, the position where the rotary shaft gamma comes in contact with the roller (q) is deviated from the top of a rising part. Then, the roller (q) becomes vertical to the base (a). The tension on the upper side and the lower side of the tape (c) coming in contact with the roller (q) becomes constant by the above operation.</p> |
