US 7,320,281 B2
Method of varying a drum profile of a vario drum and vario drum for implementing the method
Willi Becker, Bammental (Germany); Daniel Conzelmann, Dielheim (Germany); Karl-Heinz Helmstädter, Heidelberg (Germany); Thorsten Eckart, Ilvesheim (Germany); Christian Görbing, Heidelberg (Germany); Hans-Peter Hiltwein, Waghäusel (Germany); Olaf Lorenz, Ludwigshafen (Germany); Stefan Mutschall, Östringen (Germany); and Peter Thoma, Mannheim (Germany)
Assigned to Heidelberger Druckmaschinen AG, Heidelberg (Germany)
Filed on Dec. 22, 2003, as Appl. No. 10/744,737.
Claims priority of application No. 102 59 939 (DE), filed on Dec. 20, 2002.
Prior Publication US 2004/0135312 A1, Jul. 15, 2004
Int. Cl. B41F 1/30 (2006.01); B41F 21/10 (2006.01); B41F 22/00 (2006.01)
U.S. Cl. 101—409  [101/246; 101/407.1; 101/410; 101/415.1; 101/232; 271/277] 11 Claims
OG exemplary drawing
 
1. A method of varying a drum profile of a vario drum for transporting printing material sheets, which comprises the steps of:
pivoting alternatively inward and outward shell segments of the vario drum;
maintaining a circular arc-shaped circumferential contour of the shell segments during the pivoting of the shell segments; and
reversibly deforming sheet supporting elements assigned to the shell segments by pivoting the shell segments.