Roller
AssigneeAgfa-Gevaert
InventorsSiegfried Schneider, Kurt Thate, Erwin Geyken, Horst Kempe, Stephan Macher
Life of this patent
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Abstract
A roller to be used in apparatus for wet treatment of photographic material comprises a hollow metallic core and two inserts with coupling shafts provided therein. A coat of chemically resistant thermoplastic material is applied around and sealingly surrounds the core to protect it from the corrosive action of media used in the wet treatment process. The outer surface of the thus coated roller is thereupon machined to a high-quality finish.
Claims8
A roller, particularly for use in apparatus for wet treatment of strip or sheet material with aggressive fluids, comprising an elongated metallic core having two spaced end portions and an outer surface;
- a cylindrical coat of chemically resistant thermoplastic material immediately adjacent to said outer surface and having end openings adjacent said end portions of said core;
- and two side elements of synthetic plastic material fully overlapping said end openings of said coat and having portions received in said end portions of said core, said side elements having coupling means coaxial with said core and being sealingly bonded with said coat so that said side elements and said coat together form a closed fluid tight and corrosion-resistant envelope of synthetic plastic material around said metallic core to protect the same from attack by said aggressive fluids.
Dependencies are inferred from the claim text.