Printing – Processes – Condition responsive
Patent
1993-03-25
1995-03-21
Burr, Edgar S.
Printing
Processes
Condition responsive
101219, 101228, 226 11, 226 45, B41F 504
Patent
active
053986105
ABSTRACT:
A system and method for preventing a broken printing web from wrapping about or otherwise fouling the blanket cylinders of printing press units. The system and method includes a web tensioning device located downstream of the printing press units for maintaining tension upon a broken web and pulling the web from the printing press units. The device includes a plurality of web disturbance detectors for detecting a wave, ripple or other disturbance indicative of a web break. A pair of anti-wrap rollers located above and below the web are engaged upon detection of a web break to engage the web between them to exert tension onto the web and pull it from the printing units. The anti-wrap rollers are rotated at a surface speed nominally greater than the surface speed of the printing rolls. The anti-wrap rollers include a plurality of opposed peak and valley portions which enable them to interlock and grip the web along a line of contact.
REFERENCES:
patent: 3152746 (1964-10-01), Kindseth et al.
patent: 4500043 (1985-02-01), Brown
patent: 4508033 (1985-04-01), Fischer
patent: 4549485 (1985-10-01), Nawrath
patent: 4748910 (1988-06-01), Richter
patent: 4846060 (1989-07-01), Proctor
patent: 4909426 (1990-03-01), Crowley et al.
patent: 4961378 (1990-10-01), Balow et al.
patent: 5163371 (1992-11-01), Kotterer et al.
Web Catcher Manual, Rev A, Item #A71669, Watch Tower Bible and Tract Society of Pennsylvania, Nov. 11, 1992.
Gregory Michael
Lawrence William
Lewandowski Edward
Ozers Guntis
Pavliny Mark
Baldwin Web Controls
Bennett Christopher A.
Burr Edgar S.
LandOfFree
Anti-wrap device for a web press does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Anti-wrap device for a web press, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Anti-wrap device for a web press will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1142532