A printer is a hardware device that can paste text and infographics such as graphs, flowcharts, and images on a piece of paper.
The draft for printing is usually prepared on a computer using relevant software. Afterward, a printer is commanded to print those characters on a medium, usually a piece of paper.
A printer uses ink or a tonner, depending on whether it is an inkjet printer or a laserjet printer.
Printers are also capable of printing in color or black and white depending on their technology, the type of data to be printed, and the requirement from the print.
It is a much cheaper, faster, and feasible way than writing by hand, as a printer can be commanded to print several copies at once.
A copier is a kind of printer that is also equipped with a scanner. Just like a printer takes printing commands from a computer, a copier takes commands from the scanner.
In the case of a copier, a hard copy of the file to be printed is put on the scanner, which scans the characters and figures printed on it. Afterward, the scanner converts that data into an electrical instruction and passes it on to the printer.
The printer reads the instructions and prints them down on a piece of paper, creating exact copies of the input file.
Similarly, a fax machine also has two parts, one for input and one for output. A fax machine is much like a copier, just communicating with other fax machines over a distance.
A fax machine takes input in the form of a printed paper. It uses the same scanner technology to create a soft copy of data representing characters and figures present on the input paper.
The fax machine then communicates this data to another fax machine using electronic signals, decoding the message, understanding the commands, and prints an exact copy of the input paper.
In this way, a fax machine copies a paper but over a vast distance.
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