Patent ID: 6928930

Claim:
A system for cleaning all ink-bearing cylinders mounted within a single rotary printing press, the system consisting essentially of a plurality of erasing devices operative to emit pressurized jets of water, each one of said erasing devices having a plurality of high pressure nozzles arranged in a row parallel to a respective one of the cylinders so as to extend over an entire width of the cylinder, and being configured to direct the jets of water substantially over the entire width of the cylinder against an outer surface of the respective one of the cylinders so as to remove all traces of ink and reactively erase ink-bearing layers via only the jets of water so that the cylinder is simultaneously rendered re-imageable, each said erasing device being arranged over the width of the respective cylinder to be cleaned so that the cylinder is movable rotatably below the erasing device, each said erasing device including a housing which opens towards the outer surface of the cylinder and defines a working space, each said housing being connectable to a pump and suction means for evacuating the working space.