What Is Fax Machine And How It Functions
Nowadays, you can find fax machines in nearly any office in the United States or anywhere in this world, big 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 immediately!
History of Fax Machine
Fax machine was first designed by a Scottish mechanic, Alexander Bain in 1843 by integrating clock and telegraph technology. After that, Giovanni Caselli created a pantelegraph used by French Post in 1862. In 1902, Arthur Korn invented a way of transmitting photograph through electric wires. Edouard Belin in 1914 established the concept for remote fax photo and news reporting.
In 1924 AT&T (American Telephone and Telegraph Company) improved telephone faximile technology by developing a telephotography machine that was used to transmit political convention photos.
Again by Edouard Belin in 1925, he developed the Belinograph. Next in March 5, 1955 the first radio faximile was delivered across the country. In 1966, Xerox introduced a fax machine that was smaller and easier to use which encourage offices to use them. At around 1980's the fax machines were extremely common.
How Fax Machine Works
Early fax machine was created by involving a rotating drum. You have to attach a paper to the drum with print facing forward to mail a fax. The rest of the fax machine involving image sensor with lens and light. The sensor was attached to an arm and faced the sheet of paper. The the arm could move downward over the sheet of paper from one to the other as the sheet rotated to the drum.
The photo sensor was able to focus in and view an extremely small spot on the paper in an area of around 0,01 inches square. The drum then would revolve so that the photo sensor could analyze one line of the paper and then move down a line.
To send the information through a phone line early fax machine utilizing a color code which 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 another tone. For instance, 800Hz for white and 1.300Hz for black.
At the receiving part, there would be an identical rotating drum, with some kind of pen to mark on the paper. When the receiving fax machine heard a 1,300-Hertz tone, it would apply the pen to the paper. When it heard 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 modern fax machines have paper feed system to send multi pages fax.
Modern technology is employed in fax machines that use photo-diode sensor system, containing 1,728 sensors that reads an entire line of the document at a time.
There are a few different methods of printing the fax on the receiving end. The oldest technique, mentioned before, is using rolls of thermal paper. Fax machines that work with this paper have some great advantages: they're cheap to make; they have no moving parts, except the paper-feed mechanism; there is no printer ink cartridge or ribbons (the paper contains the ink); and they're nearly indestructible. Other methods involve thermal film (which is more complex than thermal paper, but less complicated compared to inkjet), inkjet and laser. Also, faxes can be received straight into a computer that has a fax modem, and printed with whatever printer is attached to the PC.
That's it, a little bit about fax machine that might help you understand more about the tool that is nearly impossible to do business without one these days..
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