Anastatic pressure
Anastatic printing (from ancient Greek ἀνάστασις anástasis "resurrection, resurrection") is an early method of reproducing all types of older printed matter and copperplate engravings through a simple chemical process. There is disagreement about the inventor in the sources; it is called Appel, specifically Rudolf Appel , or Hoffmann (1786).
description
The procedure was as follows: The original was immersed in a vessel with very dilute nitric acid , whereby only the unprinted areas took up acid, was then placed between sheets of blotting paper to remove the excess acid, and then pressed onto a highly polished zinc plate. In those places where the paper had absorbed acid, the zinc plate was attacked; the lettering, on the other hand, remained raised so that it could be blackened and reproduced by printing.
Since the perfection of the photomechanical printing processes and especially the trend towards photozincography, anastatic printing was only rarely used from 1870 onwards. Like the related process of isography , anastatic printing was used for a long time for the production of facsimile editions. These editions, mostly from the 19th century, appear in the second-hand bookshop with the corresponding notes.
Individual evidence
- ↑ Anastatic Print In: Meyers Großes Konversations-Lexikon, Volume 1. Leipzig 1905, p. 485.
- ↑ Anastatic pressure . In: Brockhaus Konversations-Lexikon 1894–1896, Volume 1, p. 582.
- ↑ Anastatic pressure. In: Glossary of the Bibliotheca Selecta. Archived from the original on May 8, 2008 ; Retrieved April 21, 2009 .