Planographic printing plate for use with negative transparency - having long life, capable of accurate dot structure that produces high fidelity printing with good reprodn

摘要

Title plate comprises a base sheet suitable treated to receive an electroplated metal layer, a Cr layer composed of fine, densely packed crystals, the layer having a hard inherently smooth scratch-proof, non-porous surface bonded to the base sheet, a thin Ni layer bonded to the Cr layer, to constitute an adherence element, and a non-gained, nonporous, hard Cu ink adhering layer composed of fine, densely packed crystals and having a hard, inherently smooth, scratch-proof non-porous surface bonded to the Ni layer.