Abstract: A cleaning device for surfaces of cylinders of a printing machine is provided, having at least one nozzle 23 with a nozzle opening 4 for a jet of cleaning fluid 13, a distribution line 22 for cleaning fluids, in which the nozzle 23 is inserted, as well as a cleaning element 20 for lifting contaminants, dissolved by the cleaning fluids, off the surface of the cylinder. The nozzle 23 is embodied as a separate component and detachably inserted in the distribution line 22. The nozzle 23 is made from a soft-elastic material. The nozzle 23 is provided with a deflector surface 6 arranged downstream from the nozzle opening 4 for deflecting and fanning a jet 13 exiting the nozzle opening 4, as well as a base 1 for inserting it into a distribution line 22, and a channel 11, which extends, on the one side, to a base opening 3 and, on the other side, to the nozzle opening 4. Furthermore, the invention relates to a nozzle for insertion in such a cleaning device.

Abstract: A device for cleaning cylinders of a printing machine is provided, with the device being provided with a driven washing roller 2 to contact a cylinder 1 to be cleaned. A doctor blade 4 at least temporarily engages the surface of the rotating washing roller 2. A collection trough 6 is provided for the dirt scraped off the rotating washing roller 2 by a doctor blade 4. The doctor blade 4 is mounted in the collection trough 6. The collection trough 6 is movably mounted in reference to the washing roller 2 such that the doctor blade 4 can contact the washing roller 2 or can be moved away from it, when necessary, by a respective movement of the collection trough 6.

Abstract: A method and apparatus for cleaning cylinders of a printing press with at least one automated washing device (1), which is controlled by a controller (2) with a washing sequence program, which can be selected automatically or manually and which also can be started automatically, delayed, or manually. According to the invention, there is a sensor (3), which interacts with the controller and which scans the surface of the cylinder to be cleaned or the print substrate (4) leaving the cylinder using a non-contact method.