Web curling prevention device for a rotary printing press or the like
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 28, 2001
Grant Date -
N/A
app pub date -
Apr 21, 2000
filing date -
Aug 31, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A rotary printing press has a postprinting processing station where the printed web of paper, stretched out between two pairs of nip rollers, is slit longitudinally into a pair of web halves and where the web halves are subsequently superposed one upon the other. This station includes a tension roller for imparting tension to the web being slit, and a set of turnbars for causing a change in the traveling direction of one of the web halves before being placed in register with the other. The tension roller and one of the turnbars are both automatically driven to their working positions with the start of machine operation and retracted when the machine is set out of operation.
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