Sheet-guiding foil as a dressing for back pressure cylinders

Details Sheet-guiding foil as a dressing for back pressure cylinders Sheet-guiding foil as a dressing for back pressure cylinders

B - Operations, Transporting

41

F

101/80.1

B41F 13/02 (2006.01) B41F 22/00 (2006.01)

Patent

CA 1128363

ABSTRACT OF THE DISCLOSURE A new improved service life sheet guiding foil as a dressing for back pressure cylinders on rotary offset printing machines is disclosed. One surface of the sheet guiding foil is smooth while the opposite surface is provided with spherical cups of equal height and of statistically uniform distribution. Such a sheet guide foil has an extended service life and improved ink transfer properties which remain essentially constant over the service life of the foil. The textured surface of the foil provides a chemically resistant non-wearing rigid substrate with good ink transfer properties and has a thin chromium layer which evens out any microroughness.

349706

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