B - Operations – Transporting – 41 – F
Patent
B - Operations, Transporting
41
F
101/80.1
B41F 7/30 (2006.01)
Patent
CA 1298138
METHOD AND APPARATUS FOR DAMPENING PLATE CYLINDER OF OFFSET PRESS ABSTRACT OF THE DISCLOSURE A novel dampening unit for an offset press is proposed, comprising a nozzle (20) with a discharging mouth (21) in the form of a slit directed substantially at a tangent to an outer surface of the plate (6a) and extending in the axial direction of the plate cylinder (6), which discharging mouth (21) is disposed near the plate surface. The interior of the nozzle (21) is divided into upper and lower chambers (20a, 20b) from the innermost area thereof to the discharging mouth (21) by a partition (22) extending in the direction of an air stream over the whole length of the nozzle (20). A device for generating an air stream, such as a fan (23) is disposed within the upper chamber (20a) and a device for generating a mist such as an ultrasonic generator (27) is disposed within the lower chamber (20b). According to this structure, the mist sucked out from the lower chamber (20b) can be stably and effectively held on the plate surface while sandwiched between the plate surface and an air film formed by the air stream ejected from the upper chamber (20a).
554890
Borden Ladner Gervais Llp
Maruta Kazuo
LandOfFree
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