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. Claude Elwood Shannon, the "father of information theory", mathematically proves the Nyquist–Shannon sampling theorem
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In 1850, a London inventor named F. C. Blakewell received a patent what he called a "copying telegraph".
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The pantelegraph (Italian: pantelegrafo; French: pantélégraphe) was an early form of facsimile machine transmitting over normal telegraph lines developed by Giovanni Caselli, used commercially in the 1860s, that was the first such device to enter practical service, It could transmit handwriting, signatures, or drawing
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In 1895, Ernest Hummel a watchmaker from St. Paul, Minnesota invented his competing device called the telegraph
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.In 1914, Edouard Belin established the concept of the remote fax for photo and news reporting.
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.In 1924, the telephotography machine (a type of fax machine) was used to send political convention photos long distance for newspaper publication. It was developed by the American Telephone & Telegraph Company (AT&T) worked to improve telephone fax technology.
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.By 1926, RCA invented the Radiophoto that faxed by using radio broadcasting technology.
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In 1947, Alexander Muirhead invented a very successful fax machine
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.Chester Carlson present 1958 – s the first photocopier suitable for office use.
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.In 1902, Dr. Arthur Korn invented an improved and practical fax, the photoelectric system
