Impression cylinder with domelike surface portions of uniform height
AssigneeHeidelberger Druckmaschinen AG
InventorArno Wirz
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Abstract
A sheet guiding cylinder of a rotary printing press includes a cylindrical member, at least the outer surface portion of which is formed of chemically resistant, wear-resistant and unyielding material and has a multiplicity of elevated solid surface portions consisting of a distribution of domelike structures of uniform height formed thereon.
Claims7
An impression cylinder of a rotary offset printing press comprising a metal cylindrical member of chemically resistant, wear-resistant and unyielding material formed in one continuous piece with a multiplicity of elevated non-hollow solid surface portions formed of said one-piece material said surface portions being domelike and of uniform height, and having a distribution which is statistically uniform yet sufficiently irregular to prevent moire formation, a cylinder body, and means for rigidly securing said cylindrical member to said cylinder body.
Dependencies are inferred from the claim text.