| 摘要 |
<p>PURPOSE:To obtain an assured operation in a simple structure, by securing a control for each type of operations with just one unit of the cam component. CONSTITUTION:The cam faces 44a, 44b, 44c and 44d plus the gear 44e are unified into one body in the cam component 44; and the face 44a touches the cam coupling pin 49 of the head base 47. At the same time, the face 44b is fitted to the cam coupling arm 40f of the pinch roller working lever 40. And the face 44c is fitted to the cam coupling arm 41f of the pinchroller working lever 41, and the face 44d has a coaction with the cam coupling end part 45c at the lower part of the brake lever 45. The gear 44e receives a retarding driving from the motor 50 and via the retarding gear row 51 to be turned clockwise and counterclockwise in the case of the forward and backward sending of the tape respectively.</p> |
