| 摘要 |
A paper feeding apparatus for printers and the like, in particular suited for providing a continuous stretched web (3) of paper coming from an unstretched condition such as a loop (4) formed at the end of a paper processing machine placed upstream. The apparatus (1) comprises a first (6) and a second (7) dragging means placed one after the other and both pulling the web (3). The second dragging means (7) has a dragging speed V of the paper greater than 2-15% the dragging speed of the first dragging means (6) thereby a stretch occurs in the paper passing through them. The second dragging means (7) may comprise either two counter rotating friction rollers (7a, 7b) or three friction rollers (17,18,19) forming a U path. The apparatus allows to provide the printing group with a stretched web of paper without being complex and encumbrant as the presently known stretching means are. <MATH> |
