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AssigneeMacDermid Graphic Arts, Inc.
InventorsShophie Haraux, Chouaib Boukaftane, Jerzy Kuczynski, Khalid Zahouil, Christian Decker
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The invention concerns a printing blanket for a cylinder of a printing machine, specifically of offset type, including a ground or polished or even molded lithographic layer, at least one reinforcing layer and at least one compressible layer. According to the invention, at least one surface property of the invention, namely the overall surface energy of the blanket, the surface energy with a polar character of the blanket or the average roughness of the blanket varies on the outer surface of the blanket crosswise. The invention is applicable for any indirect printing process, especially offset printing as function.
Printing blanket for a cylinder of a printing machine, specifically of offset type, including a ground or polished, or even molded lithographic layer, at least one reinforcement or support layer, and at least one compressible layer, characterized in that at least one surface property of the blanket, in particular the overall energy of the blanket, the surface energy with a polar character of the blanket or the average roughness of the blanket, varies on the outer surface of the blanket in the crosswise direction.
Blanket according to one of claim 1 to 19, characterized in that the average roughness of the blanket varies between two extreme limits each falling between 0.3 and 2 μm .
Dependencies are inferred from the claim text.