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printers are devices that accept text and graphic output from a computer and transfers the information to paper, usually to standard-size, 8.5″ by 11″ sheets of paper. Printers vary in size, speed, sophistication and cost. In general, more expensive printers are used for more frequent printing or high-resolution color printing.

Personal computer printers can be distinguished as impact or non-impact printers. Early impact printers worked something like an automatic typewriter, with a key striking an inked impression on paper for each printed character. The dot matrix printer, an impact printer that strikes the paper a line at a time, was a popular low-cost option.

The best-known non-impact printer are the inkjet printer and the laser printer. The inkjet sprays ink from an ink cartridge at very close range to the paper as it rolls by, while the laser printer uses a laser beam reflected from a mirror to attract ink (called toner) to selected paper areas as a sheet rolls over a drum.

Different types of printer

There are many different printer manufacturers available today, including Canon, Epson, Hewlett-Packard, Xerox and Lexmark, among many others. There are also several types of printers to choose from, which we’ll explore below.
Inkjet printer recreate a digital image by spraying ink onto paper. These are the most common type of personal printer.
Laster printer are used to create high-quality prints by passing a laser beam at a high speed over a negatively charged drum to define an image. Color laser printers are more often found in professional settings.
3D printer are a relatively new printer technology. 3D printing creates a physical object from a digital file. It works by adding layer upon layer of material until the print job is complete and the object is whole.

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