Printing – Rolling contact machines – Rotary
Patent
1998-09-11
2000-12-26
Hilten, John S.
Printing
Rolling contact machines
Rotary
101219, 226 21, B41F 1354
Patent
active
061642010
ABSTRACT:
The present invention is directed to providing apparatus and methods for lateral position control using a web guide which detects a relative lateral shift of a web upstream of a control device. Error correction is thereby implemented using a phase advance rather than a phase lag. The lateral displacement control can be implemented continuously, or can be activated at certain times (e.g., when a new roll is spliced to an old roll, or when disturbances enter the system). The invention eliminates wasted time and wasted paper, by eliminating misalignment of a web with respect to a printing unit.
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Extensive Range Allows Detection of Microparts, Keyence, LX2.sub.-13, Laser through-Beam Photo-Sensor Wide-Beam Type, Cat. No. NLX2-13, 2 pages.
Chau Minh
Heidelberger Druckmachinen AG
Hilten John S.
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