B - Operations – Transporting – 41 – D
Patent
B - Operations, Transporting
41
D
B41D 7/04 (2006.01) B41F 22/00 (2006.01) B41N 1/04 (2006.01) B41N 1/12 (2006.01) B41N 7/00 (2006.01)
Patent
CA 2077871
The invention relates to a foil as a cover for an impression cylinder in rotary offset perfecting presses, which consists of a rigid support layer resistant to chemicals and wear and with good ink transfer behavior, said foil having a calotte-structured surface of statistically uniformly distributed convex and concave structural elements and a chromium layer which forms the sheet-guiding outer cylindrical surface of the impression cylinder and has a microroughness-reducing effect, and a sheet is supported by the poles of the convex structural elements thereof. These convex structural elements have an oval shape, with the radius of curvature from pole to passage into the concave structural elements becoming gradually larger.
Dennison Associates
Heidelberger Druckmaschinen Aktiengesellschaft
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