Patent ID: 6543352
Filing Date: 2003-04-08
Classification: B41F

Abstract:
A printing unit for a web fed rotary printing machine, comprising:a machine frame support; two sets of printing unit cylinders, each set comprising an outer printing unit cylinder and an inner printing unit cylinder, the two sets being arranged so that a web is printable between the inner printing unit cylinders of the two sets; a plurality of carriages, wherein each carriage corresponds to one printing unit cylinder for rotatably mounting its corresponding printing unit cylinder on the machine frame support; a drive motor for each cylinder; and two sets of guide elements arranged on the machine frame for determining a travel setting of the plurality of carriages along the machine frame support, one of the two sets of guide elements including guide elements for only the outer cylinders the other of the two sets of guide elements including guide elements for only the inner cylinders, the guide elements for the outer cylinders being arranged on the machine frame support in a different direction than the guide elements for the inner cylinders, so that movement of the outer printing unit cylinders is along a different path than movement of the inner printing unit cylinders, the movement paths extending along planes that intersect.