Printing – Antismut device – Cleaners
Patent
1991-10-10
1992-11-17
Burr, Edgar S.
Printing
Antismut device
Cleaners
101425, B41F 3500, B41L 4100
Patent
active
051633698
ABSTRACT:
A non-contact web cleaning apparatus has a pair of guide rollers over and under which a paper web is run and two cleaning heads, each for cleaning a respective one of the two opposite sides of the moving paper web. Each cleaning head has a pressure slot for directing compressed air against the moving paper web as it passes around a respective one of the guide rollers and a vacuum slot for carrying away particles dislodged from the paper web by the pressure slot flow. The two cleaning heads are pivotally mounted about fixed axis so as to be displaceable relative to the guide rollers, and hence to the path of the paper web, between first positions in which the heads are disposed in their operational positions relative to the guide rollers for cleaning the paper web and second positions in which the heads are spaced sufficiently far from the guide rollers to facilitate feeding of the paper web therebetween. Abutment members automatically set the spacing between the cleaning heads and the respective guide rollers to achieve said first positions by engagement of tubes in the cleaning heads with the abutment members. A double acting ram displaces the cleaning heads between their two positions by acting between two pivotable arms on which the cleaning heads are mounted.
REFERENCES:
patent: 2082411 (1937-06-01), Merrill
patent: 2818595 (1958-01-01), Rosewall
patent: 3659526 (1972-05-01), Staller
patent: 3956790 (1976-05-01), Ishiwata et al.
patent: 4861178 (1989-08-01), Reed
patent: 4906333 (1990-03-01), Myren
Burr Edgar S.
Hendrickson Lynn D.
J. & C. Moores, Ltd.
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