Abstract: A method and apparatus for more simply and efficiently coupling and decoupling a cylinder in a printing machine. The coupling and decoupling apparatus includes a bearing bushing (11) in a fixed bushing (28). The bearing bushing (11) carries an axial force loaded spindle (10) that is axially displaceable within the bushing (11) between a coupling position in a centering portion (9) of the cylinder and a decoupling position in which a braking system (24, 25) is engaged.

Abstract: The invention pertains to a method and device for coupling/decoupling a cylinder in a printing machine. The problem of the invention is to provide a method and device that can simplify the coupling process. The problem is solved by placing a bearing bushing 11 in a fixed bearing 28, which presents the spindle sleeve 10, which can be axially displaced in a longitudinal guide 27, and which can be coupled to the end 8 of the cylinder 3.

Abstract: An apparatus for cleaning the cylinders of the printing units of a printing machine is disclosed. The cleaning apparatus is provided with three subassemblies. Specifically, it includes a cleaning subassembly having at least one washing roller for washing the cylinder to be cleaned. The cleaning apparatus also includes a conveying subassembly for transporting the cleaning subassembly into and out of the printing unit. The conveying subassembly is dimensioned to slide into the service orifice in the frame of the printing unit while supporting the cleaning subassembly.

Abstract: A device for transporting sheets within a printing machine in which the sheets are conveyed by gripper carriages which are articulated on endless chains driven by chain wheels. A transfer of the sheets between the gripper carriages and a sheet-guiding cylinder takes place in the region of the chain wheels. The chain wheels, around which the chains are guided do not have a continuous shaft, but are attached to the opposing ends of short stub shafts which are mounted rotatably in the frame side walls of the printing machine. Attached to the other ends of the stub shafts stubs are gear wheels which mesh with gear wheels attached to the two journals of the sheet-guiding cylinder in order to synchronize the chain wheels with the sheet-guiding cylinder. A feed and take-off transport device of this type operates in such a way that a freshly printed sheet or a sheet provided with varnish coating can be transferred to and/or removed from the sheet-guiding cylinder in a smear-free manner.