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Some are mechanical and some are chemical. There is naturally some overlap with printing processes and photographic processes, but the challenge of precisely duplicating business letters, forms, contracts, and other paperwork prompted some unique solutions as well. There were many short-lived inventions along the way.
Reproduction of Jefferson's polygraph at the Smithsonian Institution One of the polygraphs used by Thomas Jefferson, a portable version. A Polygraph is a duplicating device that produces a copy of a piece of writing simultaneously with the creation of the original, using pens and ink.
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 ...
Letters and typographical symbols were sometimes used to create illustrations, in a precursor to ASCII art. Because changing ink color in a mimeograph could be a laborious process, involving extensively cleaning the machine or, on newer models, replacing the drum or rollers, and then running the paper through the machine a second time, some ...
Here's the difference between choosing your own lotto numbers versus using a random number generator. ... You can choose the exact numbers you want or you can take advantage of Quick Pick and get ...
A Xerox digital photocopier in 2010. A photocopier (also called copier or copy machine, and formerly Xerox machine, the generic trademark) is a machine that makes copies of documents and other visual images onto paper or plastic film quickly and cheaply.
A spirit duplicator (also Rexograph and Ditto machine in North America, Banda machine and Fordigraph machine in the U.K. and Australia) is a printing method invented in 1923 by Wilhelm Ritzerfeld, which was used for most of the 20th century.
While a monkey is used as a mechanism for the thought experiment, it would be unlikely to ever write Hamlet, according to researchers.. The infinite monkey theorem states that a monkey hitting keys at random on a typewriter keyboard for an infinite amount of time will almost surely type any given text, including the complete works of William Shakespeare.