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Copiers can also use other technologies, such as inkjet, but xerography is standard for office copying. Commercial xerographic office photocopying [1] gradually replaced copies made by verifax, photostat, carbon paper, mimeograph machines, and other duplicating machines. Photocopying is widely used in the business, education, and government ...
So, an A1 page can fit two A2 pages inside the same area. The most used of this series is the size A4, which is 210 mm × 297 mm (8.27 in × 11.7 in) and thus almost exactly 1 ⁄ 16 square metre (0.0625 m 2 ; 96.8752 sq in) in area.
B1 is between A0 and A1 in size, with an area of m 2, or about 0.707 m 2. As a result, B0 is 1 metre wide, and other sizes of the series are a half, a quarter, or further fractions of a metre wide: in general, every B size has exactly one side of length 1 m 2 n {\displaystyle {\frac {1\operatorname {m} }{2^{n}}}} for n ∈ N {\displaystyle n\in ...
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Xerox was founded in 1906 in Rochester, New York, as the Haloid Photographic Company. [11] It manufactured photographic paper and equipment. In 1938, Chester Carlson, a physicist working independently, invented a process for printing images using an electrically charged photoconductor-coated metal plate [12] and dry powder "toner".
Its purchase price was $27,500, [11] which was established by the US Government, as they would not rent equipment. The customer also bought paper and toner (ink) at a cost of about 5 cents per copy. The customer also bought paper and toner (ink) at a cost of about 5 cents per copy.
Movable type allowed for much more flexible processes than hand copying or block printing. Around 1040, the first known movable type system was created in China by Bi Sheng out of porcelain. [5] Bi Sheng used clay type, which broke easily, but Wang Zhen by 1298 had carved a more durable type from wood. He also developed a complex system of ...
Methods of copying handwritten letters Manifold stylographic writer, using early "carbonic paper" Letter copying book process; Mechanical processes Tracing to make accurate hand-drawn copies; Pantograph, manual device for making drawn copies without tracing, can also enlarge or reduce; Printmaking, which includes engraving and etching
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