Photo-Engraving on Zinc and Copper in Line and Half Tone and Photo-Lithography

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Excerpt from Photo-Engraving on Zinc and Copper in Line and Half Tone and Photo-Lithography: A Practical ManualThe next step in progress was the process of printing from a photographic negative direct upon the zinc so securing firmer and better results than when one or two transfers had to be made.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully, any imperfections that remain are intentionally left to preserve the state of such historical works.