The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 14, 1995
Filed:
Sep. 13, 1993
Arno Wirz, Bammental, DE;
Heidelberger Druckmaschinen AG, Heidleberg, DE;
Abstract
Foil for covering an impression cylinder of a rotary offset printing press for first-form and perfector printing is formed of a chemically and wear-resistant rigid support layer having good ink transfer behavior and having a structured surface with statistically uniformly distributed convex and concave structural elements thereon, and a microroughness-reducing chromium layer disposed on the rigid support layer and forming a sheet-guiding outer cylindrical surface of the impression cylinder, respective peaks being formed on the convex structural elements for supporting a sheet thereon, each of the convex structural elements having an oval shape with a radius of curvature increasing from the respective peak thereof to a transition into respective concave structural elements adjacent thereto.