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One of the two copiers that were present that day caught fire. [1] The 914 was one of the most successful Xerox products ever, and was a significant component of Xerox's revenues in the mid-1960s, with one author estimating that the machine accounted for two thirds of the company's revenue in 1965, with income generated of $243M. [11]
For example, when copying a set of 20 pages 20 times, a digital copier scans each page only once, then uses the stored information to produce 20 sets. In an analog copier, either each page is scanned 20 times (a total of 400 scans), making one set at a time, or 20 separate output trays are used for the 20 sets.
Using letter copying presses, copies could be made up to twenty-four hours after a letter was written, though copies made within a few hours were best. A copying clerk would begin by counting the number of master letters to be written during the next few hours and by preparing the copying book. Suppose the clerk wanted to copy 20 one-page letters.
Duplicating in the year B.C. - Before (xerographic) Copies at the Wayback Machine (archived June 24, 2009) Making Copies from Carbon to Kinkos; Copies in Seconds (PDF) Antique Copying Machines at Officemuseum.com; Office and Reprographic Printing Cheatsheet – Preservation Self-Assessment Program
For instance, the product of three factors of two (2×2×2) is "two raised to the third power", and is denoted by 2 3, a two with a superscript three. In this example, the number two is the base, and three is the exponent. [26] In general, the exponent (or superscript) indicates how many times the base appears in the expression, so that the ...
The printer also has basic scan and copy capabilities, the big limitation being the one-sheet-at-a-time flatbed. If you need a machine with a multi-page document feeder, keep looking.
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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. Patented by John Isaac Hawkins on May 17, 1803, it was most famously used by the third U.S. president, Thomas Jefferson , who acquired his first polygraph in 1804 and later suggested improvements ...