Abstract: A device for cooling printing stock and printing units by refrigerated air blast at sheet-fed rotary printing presses. It is an object of the invention to provide a method and a device, which require little energy and space and, at the same time, ensure that the printing stock and the printing press are protected against harmful effects of temperature. Pursuant to the invention, this objective is accomplished owing to the fact that the refrigerated air blast, after contact with the surface of a sheet-guiding cylinder (2) of at least one pneumatic sheet-guiding device (12, 13, 14; 15, 16; 17, 18, 19), is recycled at least partially.

Abstract: The present invention relates to an apparatus for cooling material to be printed and printing machine elements at sheet-fed rotary printing machines by means of cooled compressed air. It is an object of the present invention to provide an apparatus which requires little space, is able to cool effectively the material to be printed as well as the machine elements, which are undesirably heated by the dryers. Pursuant to the present invention, this objective is accomplished by providing an apparatus wherein cooled, compressed air is supplied over one or more sheet-guiding devices for guiding the sheets pneumatically along the sheet-guiding path, and a cooling device is disposed in the cross section of flow of the compressed air or the sheet-guiding device.

Abstract: The invention relates to a device for cooling printing stock and printing units by means of refrigerated air blast at sheet-fed rotary printing presses. It is an object of the invention to provide a method and a device, which require little energy and space and, at the same time, ensure that the printing stock and the printing press are protected against harmful effects of temperature. Pursuant to the invention, this objective is accomplished owing to the fact that the refrigerated air blast, after contact with the surface of a sheet-guiding cylinder (2) of at least one pneumatic sheet-guiding device (12, 13, 14; 15, 16; 17, 18, 19), is recycled at least partially.

Abstract: The present invention relates to an apparatus for cooling material to be printed and printing machine elements at sheet-fed rotary printing machines by means of cooled compressed air. It is an object of the present invention to provide an apparatus which requires little space, is able to cool effectively the material to be printed as well as the machine elements, which are undesirably heated by the dryers. Pursuant to the present invention, this objective is accomplished by providing an apparatus wherein cooled, compressed air is supplied over one or more sheet-guiding devices for guiding the sheets pneumatically along the sheet-guiding path, and a cooling device is disposed in the cross section of flow of the compressed air or the sheet-guiding device.

Abstract: The invention relates to a method for cleaning the surface of a cylinder in a printing press with a blanket treated with a solvent of high viscosity, taken from a supply roll, brought into operating contact with the surface to be cleaned by pressing means and subsequently rolled up in a roll with the soiled blanket.