| 摘要 |
<p>In order to eliminate gusset wrinkle in a closed end signature (12), a unique new and improved method and apparatus are disclosed. The method and apparatus contemplates printing a plurality of webs (32, 34, 36, 38) on presses (30) to provide ribbons (32a, 34a, 36a, 38a) to be utilized in forming the signatures (12), delivering the ribbons after the webs have been printed on the presses (30), and merging the ribbons at the common point (70) to provide a composite to be utilized in forming the signatures. They further include folding the composite in order to form backbone folds (16) defining the closed ends of the signatures, cutting the composite into individual ones of the signatures before or after folding to form the backbone folds, and again folding the individual ones of the signatures cut from the composite in order to form intermediate folds (14). Additionally, the method and apparatus includes slitting the ribbons before or after the ribbons have been merged to provide a slit (18a) in at least a portion of the closed ends after forming the signatures.</p> |
