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Letterpress printing was the normal form of printing text from its invention by Johannes Gutenberg in the mid-15th century through the 19th century, and remained in wide use for books and other uses until the second half of the 20th century.
A Ludlow Typograph is a hot metal typesetting system used in letterpress printing. The device casts bars, or slugs of type, out of type metal primarily consisting of lead. These slugs are used for the actual printing, and then are melted down and recycled on the spot. It was used to print large-type material such as newspaper headlines or posters.
In printing and typography, hot metal typesetting (also called mechanical typesetting, hot lead typesetting, hot metal, and hot type) is a technology for typesetting text in letterpress printing. This method injects molten type metal into a mold that has the shape of one or more glyphs .
A locked-up forme for printing a single page Main article: letterpress printing In typesetting , a forme (or form) is imposed by a stoneman working on a flat imposition stone when he assembles the loose components of a page (or number of simultaneously printed pages) into a locked arrangement, inside a chase , ready for printing.
In letterpress printing and typesetting, a composing stick is a tray-like tool used to assemble pieces of metal type into words and lines, which are then transferred to a galley before being locked into a forme and printed.
Rotary letterpress printing uses type metal plates molded in the form of a cylinder. The plates, called stereotypes , are coated with ink, then pressed against a continuous roll of paper. Rotary letterpress printing was used in the mid-twentieth century to print most major newspapers.
Before computers were invented, and thus becoming computerized (or digital) typesetting, font sizes were changed by replacing the characters with a different size of type. In letterpress printing, individual letters and punctuation marks were cast on small metal blocks, known as "sorts," and then arranged to form the text for a page.
Imposition is one of the fundamental steps in the prepress printing process. It consists of the arrangement of the printed product's pages on the printer's sheet, in order to obtain faster printing, simplify binding and reduce paper waste.
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