Patent ID: 6450382
Filing Date: 2002-09-17
Classification: B65H

Abstract:
A printing web position adjusting apparatus for adjusting a side edge position of a printing web traveling in a rotary press, said printing web position adjusting apparatus comprising:two guide rollers provided orthogonally to a traveling direction in a traveling path of the printing web and parallel to each other, one of said guide rollers on an upstream side of the traveling path and the other of said guide rollers on a downstream side of the traveling path; two guide bars disposed between said two guide rollers in the traveling path of the printing web and arranged such that the printing web traveling from said guide roller on the upstream side of the traveling path of the printing web to said guide roller on the downstream side thereof is made to wrap on a peripheral face of each said guide roller over substantially 180 degrees, said two guide bars being angularly displaceable in a plane parallel to the traveling direction of the printing web around separate angular displacement centers; angular displacing means for angularly displacing said two guide bars integrally with each other around said separate angular displacement centers while maintaining parallelism therebetween; an edge sensor disposed farther downstream from said guide roller on the downstream side in the traveling path of the printing web such that a side edge position of the traveling printing web can be detected; and control means for controlling operation of said angular displacing means such that the side edge position of the printing web is adjusted to a previously determined position based on an output signal of said edge sensor.