Etched

Examples

• This plate is etched--a flat proof, so called, is pulled on a hand press--and it is then taken up by the re-etcher. Various. The Wonder Book of Knowledge.
• The idea is to break up the surface into various sized dots, as the various gradations of color on the original cannot be transferred by any other method to a sheet of copper and etched. Various. The Wonder Book of Knowledge.
• Trade-mark etched. Various. The Wonder Book of Knowledge.
• A third specimen was an impression on paper, _printed from a photograph on metal_, the picture having been etched into the plate by nitric acid, and then printed from. Frederick C. Bakewell. Great Facts.
• When the operation is reversed, and only the _darks_ are etched in _intaglio_, to be filled with ink, as in copper-plate engraving, it is called photo-gravure. Edward W. Byrn. The Progress of Invention in the Nineteenth Century.
• The etched disc is then electrotyped to form a matrix, and from this electrotype hard rubber duplicates of the original record are molded, which are capable of giving 1,000 reproductions. Edward W. Byrn. The Progress of Invention in the Nineteenth Century.
• A picture is thus produced on a metal plate, and the blank spaces are etched out by acid, leaving the lines in relief as printing surfaces. Edward W. Byrn. The Progress of Invention in the Nineteenth Century.
• Before the degrees are etched on the thermometer the open end of the tube is sealed. Bertha M. Clark. General Science.
• The disc, when completed, is then rinsed off and etched with acid, chromic acid being used, to prevent liberation of hydrogen bubbles. Edward W. Byrn. The Progress of Invention in the Nineteenth Century.

Edited by Darrell