Patent ID: 7686288
Filing Date: 2010-03-30
Classification: B42C

Abstract:
1. A device for further processing of sheets to produce multi-page printed products comprising: a folding unit for folding initial sheets into a folded sheet around a grooved line; grooving means provided upstream of said folding unit in a sheet running direction, said grooving means comprising a grooving wheel having a convex curvature at its outer circumference and forming a grooved line in each of said initial sheets passing through in a running plane before folding; and collating means in which said folded sheets are collated one on top of the other such that a fold area lies at the top and said folded sheets open downwardly, wherein adjusting means controlled by control means is provided, which adjusting means advances said grooving wheel gradually each time after the forming of a grooved line in an initial sheet towards the direction of the running plane.