Abstract: A method for cleaning cylinders of rotary printing presses simplifies the changing of cleaning cloths. The exact effective length of the cleaning cloth available for the cleaning process can also be determined in the course of changing the cleaning cloth. A fresh supply roller carrying a fresh cleaning cloth 5 is inserted into the second cleaning cloth depot for replacing the soiled supply roll. The start of the cleaning cloth on the fresh supply roller is fixed in place on a spindle located in the first cleaning cloth depot and the fresh cleaning cloth is wound onto the spindle to form a fresh supply roll while determining the length of cloth wound on the spindle. The end of the fresh cleaning cloth remains in the second cleaning cloth depot and now forms the receiving roll during the cleaning process.

Abstract: The invention relates to a device for the selective cleaning of several cylinders of the print unit of a sheet-fed printing press, which is preferably designed in a three-cylinder construction, consisting of a cleaning device which can be selectively placed against each one of the cylinders by being displaced along a guide track. It is the object of the invention to create a device which permits the cleaning of three cylinders with one cleaning arrangement, which can be produced by simple means and permits access to the cylinders. In accordance with the invention, this object is attained in that the cleaning device (27) is displaceable along a guide track (5) designed as a straight guide (6) and is embodied as a functional unit, pivotable around an axis of rotation (34).

Abstract: A washing device for cylinders of rotary printing presses includes a cleaning cloth, which can be brought into contact with the surface of the cylinder by a pressure element which can be placed against the cylinder to be cleaned. Unused cleaning cloth is stored in the form of a supply roll located on a first spindle, and the used cleaning cloth is allocated to a second spindle as a receiving roll. A is arranged either on the first spindle or on the second spindle and which is connected via a releasable connection, to the beginning of the clean cleaning cloth.