Patent ID: 7530308

Claim:
A device for cleaning the cylinders of a printing machine, comprising a driven rotating washing roller ( 2 ) arranged for movement into contact with a cylinder ( 1 ) to be cleaned, a doctor blade ( 5 ) arranged to at least temporarily contact a surface of the washing roller ( 2 ), and a collecting trough ( 6 ) positioned to receive dirt scraped off the rotating washing roller ( 2 ) by the doctor blade ( 4 ), the doctor blade ( 4 ) is mounted to the collecting trough ( 6 ), the collecting trough ( 6 ) is movably mounted in reference to the washing roller ( 2 ) to move the doctor blade ( 4 ) from a first position, in contact with the surface of the washing roller ( 2 ) by way of a corresponding movement of the collecting trough ( 6 ), to a second position, in which the doctor blade is not in contact with the washing roller.