| 摘要 |
PURPOSE:To transmit frictionally a force to reversible rollers by the use of a press force of adjustable coil spring. CONSTITUTION:Two reversible rollers 33, 34 are urged against two paper supply rollers driven rotatably by their own weight. When the rotational direction of a first shaft 35 having rotatably the two reversible rollers 33, 34 is opposite to that of a second shaft 43 for transmitting the rotation to the first shaft through a transmitting means and carrying out drive rotation, the second shaft is disposed at the paper supply direction side of the paper supply roller, and when said rotational direction is as same as that of the second shaft, the second shaft is disposed at the opposite side, while the first shaft 35 is rotatably supported by ends of support members 35, 36 provided rotatably on the second shaft so that a first turning force is frictionally transmitted to the reversible rollers 33, 34 by the use of a press force of an adjustable coil spring 42. Thus, by adjusting the press force of the coil spring 42 is eliminated a slowly received picture while the operability of adjusting operation is remarkably improved. |
