PAPER CARRYING DEVICE

摘要

PURPOSE:To prevent the skew feeding of the paper by providing a leaf spring to give the energizing force to press a pinch roller against a driving roller, realizing the structure where the spring constant of the leaf spring is changed by the position, and making the leaf spring movable in the longitudinal direction orthogonal to the axis of the pinch roller. CONSTITUTION:Driving rollers 1a, 1b are supported by a shaft 2, and pinch rollers 3a, 3 b are rotatably supported by a shaft 4 which is vertically slidable along notches 10, 10. The shaft 4 is energized from the top by leaf springs 8, 8 where the width of the leaf springs becomes the smaller and the spring constant becomes the smaller toward the tip, and the pinch rollers 3a, 3b are pressed against the driving rollers 1a, 1b. The leaf spring 8 is fixed to a supporting plate 7b by a screw 7a, and the supporting plate 7b is fixed to a sheet guide 6a by the welding or the like. A guide pin is provided on the supporting plate 7b, and when the leaf spring 8 is moved in the longitudinal direction, it is guided by an oblong hole provided in the leaf spring. This constitution freely sets the desired pressing force of the respective pinch rollers 3a, 3b by moving the leaf springs 8, 8 in the longitudinal direction.