Duplicator cylinder construction

Printing – Printing members – Blanks and processes


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29132, 164 2, 164 95, B41C 118, B41C 302, B22D 1902




Cylinders for lithographic printing machines having hard, non-porous surfaces are made without plating by forming a thin stainless steel sheet into a cylindrical shape and disposing it against the wall of a cylindrical mould. Cast iron is poured into the mould at temperatures substantially in excess of normal casting temperatures to bond with the stainless steel sheet. The surface is then ground and polished. Preferably the stainless steel is initially provided with a thin plating of copper on its inner surface to enhance the bond.

patent: 949837 (1910-02-01), Page
patent: 1115870 (1914-11-01), Sheaffer
patent: 1514129 (1924-11-01), Clark
patent: 1584368 (1926-05-01), Geiger
patent: 1943720 (1934-01-01), Campbell
patent: 1995973 (1935-03-01), Ericksson
patent: 2034599 (1936-03-01), Van Marle
patent: 2285116 (1942-06-01), Grupe
patent: 3416435 (1968-12-01), Dahl
patent: 3450189 (1969-06-01), McDonald
patent: 3682094 (1972-08-01), Greis
patent: 3754593 (1973-08-01), Stone
patent: 3807485 (1974-04-01), Paton


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