Lithographic press dampening device

Details Lithographic press dampening device Lithographic press dampening device

B - Operations, Transporting

41

F

101/60

B41F 7/30 (2006.01) B05B 7/24 (2006.01)

Patent

CA 2010214

ABSTRACT Lithographic Press Dampening Device A pneumatically-pulsed dampening device that allows precise variations in the amount of water transferred to selected regions (zones) on a vibrator roller and ultimately to a lithographic printing plate, blows independently operable and adjustable flat air streams over the upper surface of an open-celled sponge whose lower portion rests in a reservoir of water. This results in a linear carburezation of the water on the surface of the sponge into a fine atomic mist which is sprayed on the vibrator roller. Capillary tubes can be mounted before the sponge to insure continued wetting of its surface. A shroud open at one end for allowing spraying of the roller, may also be formed with a baffle to further assure the horizontal contour of the air stream and with a Bernoulli effect capturing device to suck in fugitive mist.

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