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What Is Fax Machine And How It Operates
In these days, you can find fax machines in nearly any office in the United States or anyplace in this world, large or small office, hi tech or low tech office. The basic function of fax machine is it will allow you to transmit pieces of paper to someone else instantly!
History of Fax Machine
Fax machine was first designed by a Scottish mechanic, Alexander Bain in 1843 by combining clock and telegraph technology. Then, Giovanni Caselli built a pantelegraph used by French Post in 1862. In 1902, Arthur Korn invented a way of transmitting picture through electric wires. Edouard Belin in 1914 demonstrated the concept for remote fax photo and news reporting.
In 1924 AT&T (American Telephone and Telegraph Company) improved telephone faximile technology by making a telephotography machine that was used to send political convention photos.
Again by Edouard Belin in 1925, he invented the Belinograph. Then in March 5, 1955 the first radio faximile was sent across the country. In 1966, Xerox introduced a fax machine that was smaller and simpler to use which motivate offices to use them. At around 1980's the fax machines were extremely common.
How Fax Machine Works
Early fax machine was designed by involving a rotating drum. You have to attach a paper to the drum with print facing forward to send a fax. The rest of the fax machine utilizing photo sensor with lens and light. The sensor was attached to an arm and faced the sheet of paper. The the arm can move downward over the sheet of paper from one to the other while the sheet rotated to the drum.
The photo sensor was able to focus in and view a very small spot on the paper in an area of around 0,01 inches square. The drum then would rotate so that the photo sensor could examine one line of the paper and then move down a line.
To transmit the information through a phone line early fax machine using a color code that is black and white. If the spot of paper was white the fax machine would send one tone, if it were black then it would send different tone. For example, 800Hz for white and 1.300Hz for black.
At the receiving end, there would be a similar rotating drum, with some sort of pen to mark on the paper. When the receiving fax machine heard a 1,300-Hertz tone, it would put the pen to the paper. When it received an 800-Hertz tone, it would take the pen off the paper.
Today's fax machine still use sensors to read the paper. Most of newer fax machines have paper feed mechanism to send multi pages fax.
Modern technology is applied to fax machines that use photo-diode sensor system, consisting 1,728 sensors that scans an entire line of the document simultaneously.
There are several different methods of printing the fax on the receiving end. The oldest method, mentioned earlier, is using rolls of thermal paper. Fax machines that use this paper have some significant advantages: they're inexpensive to make; they have no moving parts, except the paper-feed mechanism; there is no need of printer ink cartridge or ribbons (the paper has got the ink); and they're nearly indestructible. Other methods involve thermal film (which is more complicated than thermal paper, but less complicated than inkjet), inkjet and laser. Also, faxes can be received directly into a computer that has a fax modem, and printed out with whatever printer is attached to the computer.
That's it, a little bit about fax machine that might help you understand more about the system that is nearly impossible to do business without one today..
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