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It was claimed that a roller copier could make a half dozen copies of a typewritten letter if the letter was run through the copier several times. It could make a dozen copies if the letter was written with a pen and good copying ink. The Process Letter Machine Co. of Muncie, Indiana, offered the New Rotary Copying Press, a loose-leaf copier ...
If further copies are desired at this point, another stencil must be made. Often, the stencil material covering the interiors of closed letterforms (e.g. a, b, d, e, g, etc.) would fall away during continued printing, causing ink-filled letters in the copies. The stencil would gradually stretch, starting near the top where the mechanical forces ...
During the 1960s and through the 1980s, Savin Corporation developed and sold a line of liquid-toner copiers that implemented a technology based on patents held by the company. Before the widespread adoption of xerographic copiers, photo-direct copies produced by machines such as Kodak's Verifax (based on a 1947 patent) were used. A primary ...
Pantograph, manual device for making drawn copies without tracing, can also enlarge or reduce; Printmaking, which includes engraving and etching. Relief printing including woodcut; Intaglio (printmaking) or copperplate engraving; Planographic printing; Line engraving; 1917 office with a "Multigraph" duplicating machine at lower right. Printing ...
An improved version, Camera #1, was introduced in 1950. Haloid was renamed Haloid Xerox in 1958, and, after the instant success of the 914, when the name Xerox soon became synonymous with "copy", would become the Xerox Corporation. In 1963, Xerox introduced the first desktop copier to make copies on plain paper, the 813. [9]
Thermofax copies were inexpensive. One business book asserts that research conducted by Xerox before introducing their copier came to the conclusion that "nobody would pay 5¢ for a plain-paper copy when they could get a Thermofax copy for a cent-and-a-half." Fortunately, "Xerox ignored the research." [6]
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