DEVICE FOR REMOVING SOIL PARTICLES FROM THE PLATE CYLINDER OF AN OFFSET PRINTING MACHINE

摘要

The invention relates to a device for removing soil particles from the plate cylinder of an offset printing machine, which device extends over the entire length of the plate cylinder and engages the plate cylinder in the region between the ink transfer to the rubber cylinder and the dampening. The object is to provide means of cleaning the plate cylinder in a manner which is safe for the operator, is rapid, and is fully efficacious, while generating minimal volume of rejects. This object is achieved according to the invention in that a plurality of pneumatic cylinders are disposed distributed over the entire length of the plate cylinder, having piston plungers which are irrotationally fixed and which bear corresponding elastic wiping implements on their free ends, wherewith neighboring wiping implements have a reversed orientation with respect to each other and laterally overlap, and the attainable excursion length of each piston plunger is slightly greater than the distance between the forward edge of the wiping implement in the retracted position and the surface of the plate cylinder.