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2. Laser printing - Wikipedia

   en.wikipedia.org/wiki/Laser_printing

   A laser printer uses a laser because lasers are able to form highly focused, precise, and intense beams of light, especially over the short distances inside of a printer. The laser is aimed at a rotating polygonal mirror which directs the light beam through a system of lenses and mirrors onto the photoreceptor drum, writing pixels at rates up ...

3. Laser - Wikipedia

   en.wikipedia.org/wiki/Laser

   Lasers are used in fiber-optic and free-space optical communications, optical disc drives, laser printers, barcode scanners, semiconductor chip manufacturing (photolithography, etching), laser surgery and skin treatments, cutting and welding materials, military and law enforcement devices for marking targets and measuring range and speed, and ...

4. ZX Printer - Wikipedia

   en.wikipedia.org/wiki/ZX_Printer

   The Sinclair ZX Printer is a spark printer which was produced by Sinclair Research for its ZX81 home computer. It was launched in 1981, with a recommended retail price of £49.95 . The ZX Printer used special 4-inch (100 mm) wide black paper which was supplied coated with a thin layer of aluminium .

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