| 摘要 |
<p>PURPOSE:To constitute a tape threading device by using a single threading arm by disposing the centers of rotation of a reel turn table, take-up reel and threading arm respectively in optimum positions. CONSTITUTION:The center C1 of rotation of the reel turn table 45 coupled to a feed reel 155 is disposed on one side with respect to a central line L1 to bisect the longitudinal direction of the device and on the one side with respect to a central line L2 to bisect the transverse direction of the device. The center C2 of the take-up reel 9 is disposed on the other side with respect to the central line L1 and on the other side with respect to the central line L2 in such a manner that the center C2 thereof and the center C1 of rotation are parted at about 1.5 times the width W of a cartridge 153 at the distance E in the longitudinal direction of the device and about 0.7 times the length L of the cartridge 153 at the distance F in the transverse direction of the device. The threading arm 58 is so disposed that the center P2 thereof exists at the intersected point of the perpendicular bisector L4 of a straight line L3 connecting the drawing-out position P1 of a leader block and the center C2 of rotation and the straight line L6 perpendicular to the straight line L5 extending in the angle direction where the block 154 is drawn from the cartridge 153 through the position P1.</p> |
