Abstract: A printing press cylinder having a cylinder base body and a functional layer, which forms an outer surface of the printing press cylinder, is disclosed. The cylinder base body is made of phenolic resin impregnated textile fibers or of hardboard.

Abstract: A method for coating a printing press cylinder, namely a plate cylinder or a transfer cylinder, is disclosed. In an embodiment, the method includes providing a printing press cylinder with a metallic cylinder basic body, which has an outer surface area and at least one lockup slot, and applying a coating containing nickel to the cylinder basic body in the region of the outer surface area as well as in the region of the, or each, lockup slot by autocatalytic and/or chemical deposition.

Abstract: A printing form, specifically a re-imageable and erasable printing form, is disclosed. The printing form has an inner support layer providing mechanical stabilization, an outer dielectric functional layer serving to transfer printing ink, and conductive surface elements disposed between the support layer and the dielectric functional layer, specifically configured as electrodes, to which electrical voltages can be applied to change the surface-energy of the dielectric functional layer by area such that, depending on the voltages applied to the conductive surface elements, first ink-bearing areas and second non ink-bearing areas can be formed on the dielectric functional layer.

Abstract: A printing cylinder for a printing press, specifically a web-fed printing press, is disclosed. The printing cylinder having an outer surface and at least one lockup slot introduced into the outer surface to clamp at least one printing form or at least one rubber blanket on the printing cylinder. The entire outer surface of the printing cylinder, including the, or each, lockup slot is evenly coated autocatalytically with nickel and phosphorus.

Abstract: An ink fountain roller has a metal core and a plasma coating that is applied by plasma immersion ion implantation. The coating has a total surface energy of 35 mN/m or less, and a polar component of less than 7 mN/m. The coating is applied in a vacuum chamber by generating a metal plasma over the core, wherein the metal has a valence of +4 or +6 and is preferably at least one of titanium, molybdenum, and zirconium. Positive ions in the plasma are accelerated toward the core by applying negative high voltage pulses (5-15 kV) with very short pulse rise times (<1 ?sec) to the plasma, thereby causing positive ions in the plasma to be implanted in the core. An intermediate layer of metal or ceramic may be applied to the core prior to applying the plasma coating.

Abstract: The surface of a structural component of a printing machine from which ink or oil-based contamination can be cleaned easily has a hydrophilic character.