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AssigneeWEROS Dienstleistungen GmbH
InventorsRuediger Czeranka, Thomas Rosemann, Achim Siebert, Joerg Tellenbroeker
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The invention relates to the use of a roller or a rubber blanket with a covering made of elastomeric material with an outer surface for indirect or direct transfer of a damping solution and/or a printing agent to a print carrier of a printing press. In order to enable a virtually optimum printing result, even in the presence of changing process conditions, and to display improved back-transfer properties with unchanging properties over the service life, it is proposed that a roller/rubber blanket be used which has an outer surface that constitutes an elastomeric surface coating of the covering and contains, or completely consists of, a fluoroelastomer, particularly an elastomeric fluorinated rubber. The fluorinated rubber can, in particular, be a tetrafluoroethylene-hexafluoropropylene-vinylidene fluoride copolymer.
Roller or rubber blanket for a printing press, particularly an offset printing press, or roller as a laminating roller in a laminating system, where the roller or the rubber blanket displays a covering made of an elastomeric material with an outer surface for transferring damping solution and/or printing agent in the printing press, in order to indirectly or directly transfer a damping solution and/or a printing agent to a print carrier, where the outer surface transferring the damping solution and/or the printing agent is provided by an elastomeric surface coating of the covering, characterized in that the surface coating contains a fluoroelastomer, particularly an elastomeric fluorinated rubber, or consists at least essentially completely thereof, and the surface coating displays a layer thickness less than/equal to 100 μm and a roughness Ra less than/equal to 1 μm.
Dependencies are inferred from the claim text.