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In intaglio printing, the lines to be printed are cut into a metal (e.g. copper) plate by means either of a cutting tool called a burin, held in the hand – in which case the process is called engraving; or through the corrosive action of acid – in which case the process is known as etching.
Steel engraving. Steel engraving is a technique for printing illustrations based on steel instead of copper. It has been rarely used in artistic printmaking, although it was much used for reproductions in the 19th century. Steel engraving was introduced in 1792 by Jacob Perkins (1766–1849), an American inventor, for banknote printing.
Art and engraving on United States banknotes. In early 18th century Colonial America, engravers began experimenting with copper plates as an alternative medium to wood. Applied to the production of paper currency, copper-plate engraving allowed for greater detail and production during printing. It was the transition to steel engraving that ...
Other terms often used for printed engravings are copper engraving, copper-plate engraving or line engraving. Steel engraving is the same technique, on steel or steel-faced plates, and was mostly used for banknotes, illustrations for books, magazines and reproductive prints, letterheads and similar uses from about 1790 to the early 20th century, when the technique became less popular, except ...
The plate is then completely submerged in a solution that eats away at the exposed metal. ferric chloride may be used for etching copper or zinc plates, whereas nitric acid may be used for etching zinc or steel plates. Typical solutions are 1 part FeCl 3 to 1 part water and 1 part nitric to 3 parts water. The strength of the acid determines the ...
The company was founded in 1948 in Madison, Wisconsin by Arthur and Emily Widen, initially as Widen Engraving Co., [1] a plate-engraving business providing printing-plates for newspapers. [2] The company sustained business viability and longevity by adapting its products to technological advances and business model transformation. [3]
The union was founded in 1893 in Boston, as the National Steel and Copper Plate Printers' Union of the United States. It was chartered by the American Federation of Labor on July 2, 1898. In 1901, it changed its name to the International Steel and Copper Plate Printers of North America , to include members in Canada.
Photogravure. Photogravure (in French héliogravure) is a process for printing photographs, also sometimes used for reproductive intaglio printmaking. It is a photo-mechanical process whereby a copper plate is grained (adding a pattern to the plate) and then coated with a light-sensitive gelatin tissue which had been exposed to a film positive ...
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