![]() ![]() Phototypesetting devices, first demonstrated in the late nineteenth century, were introduced commercially in the early 1950s. Today, phototypesetting devices have almost completely replaced manual and mechanical methods of typesetting. Similar machines produced single characters of type. Until the 1950s, the majority of typesetting was performed using the Linotype machine which produces a "slug" or line of type from molten metal. mechanical assembly of lines of type, and.manual assembly of pieces of metal type (letterpress),. ![]() There are a number of typesetting methods including: Typesetting operations assemble the type characters into pages. With the systems now available, the computer can directly drive the typesetting and image carrier preparation processes once the page or entire document is laid out and ready for printing. Computer systems are equipped with both optical character recognition and photographic image scanners and digitizers so that pre-typed material and photographic images are easily incorporated into the document being composed. Both type and artwork are generated and edited using computers. However, composition has changed dramatically with the advent of computers. The text used in the paste-up was typeset and printed mechanically.
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