Patent ID: 7096783
Filing Date: 2006-08-29
Classification: B41F

Abstract:
1. Printing cylinder supporting unit for a printing machine, comprising a supporting frame and supporting means mounted on the supporting frame for rotatably supporting one of a number of printing cylinders, which are designed so that in the operating state they make contact with a substrate that is to be printed along a contact line coinciding with a describing line of the printing cylinder, wherein the printing cylinders can have different diameters and the supporting means for an axial end of said printing cylinder comprises at least three supporting bearings, each of which is designed to interact at a position of a bearing point with a bearing surface of a bearing ring fixed concentrically on the axial end concerned of the printing cylinder, wherein the bearing points for the axial end concerned of the printing cylinder lie on a common circle with variable diameter; the printing cylinder supporting unit comprises movement means for moving the supporting bearings in such a way that the bearing points move along movement lines that have a fixed position relative to the supporting frame, the movement lines intersecting each other at a reference point that is fixed relative to the supporting frame, which reference point lies on the same common circle and in the operating state lies in a plane that is defined by the contact line and the centre point of the common circle; and the printing cylinder supporting unit comprises connecting means for connecting the movements of the bearing points along their respective movement line.