Cylinders and rollers for printing machines
AssigneeAdamovske strojirny, narodni podnik
InventorsFrantisek Pospisil, Vaclav Sedlak
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Abstract
Cylinder and rollers for printing machines such as offset cylinders, impression cylinders, form cylinders and dampening rollers. The surface of the cylinder or roller consists of a layer inseparable from the cylinder proper. This layer has a thickness of 0.05 to 0.6 mm and consists of an oxide selected from the group of Al.sub.2 O.sub.3, TiO.sub.2, Cr.sub.2 O.sub.3, ZrO.sub.3 and Mgo and a combination of these oxides. This layer may also consist of a metal alloy selected from the group of nickel-chromium and nickel-chromium-boron-silicon.
Claims3
A cylinder roller for printing machines, comprising a cylinder body made of a corrodible ferrous metal, and at least one inseparable non-corrodible cylindrical surface layer on the body of said cylinder or roller, said layer consisting in combination of at least two metal oxides selected from the group consisting of Al.sub.2 O.sub.3, TiO.sub.2, CrO.sub.3, and MgO, said inseparable layer having a thickness of 0.05 to 0.6 mm.
Dependencies are inferred from the claim text.