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US 3,979,212 AGranted
Laminated lithographic printing plate
AssigneePrinting Developments, Inc.
InventorsJohn E. Peters, Vincent A. Pagliaro
Life of this patent
Estimating the term…
Abstract
An inexpensive, strong, durable noncracking, high fidelity lithographic printing plate comprises a soft temper aluminum sheet laminated to a nonstainless steel sheet with an adhesive. If desired, the aluminum sheet can be plated with either copper or chromium and the copper in turn can be plated with chromium.
Claims9
An inexpensive, strong, durable, noncracking, high fidelity lithographic printing plate which comprises a laminated base or substrate formed of a soft temper aluminum sheet laminated to a nonstainless steel sheet with an adhesive.
Dependencies are inferred from the claim text.