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3 definitions found
 for laser printer
From The Collaborative International Dictionary of English v.0.48 :

  laser printer \laser printer\ n.
     A printer controlled by a computer, using a laser beam to
     produce images in a fine dot-matrix pattern of charge on an
     electrostatic drum, to which fine particles of ink are
     subsequently caused to adhere, and the image of which is
     subsequently transferred to paper or another type of material
     in sheet form. It is capable of high-speed production of
     images with a higher resolution than those from dot-matrix
     impact printers.
     [PJC]

From WordNet (r) 3.0 (2006) :

  laser printer
      n 1: electrostatic printer that focuses a laser beam to form
           images that are transferred to paper electrostatically

From The Free On-line Dictionary of Computing (30 December 2018) :

  laser printer
  
      A non-impact high-resolution printer which uses a
     rotating disk to reflect laser beams to form an electrostatic
     image on a selenium imaging drum.  The developer drum
     transfers toner from the toner bin to the charged areas of the
     imaging drum, which then transfers it onto the paper into
     which it is fused by heat.  Toner is dry ink powder, generally
     a plastic heat-sensitive polymer.
  
     Print resolution currently (2001) ranges between 300 and 2400
     dots per inch (DPI).  Laser printers using chemical
     photoreproduction techniques can produce resolutions of up to
     2400 DPI.
  
     Print speed is limited by whichever is slower - the printer
     hardware (the "engine speed"), or the software rendering
     process that converts the data to be printed into a bit map.
  
     The print speed may exceed 21,000 lines per minute, though
     printing speed is more often given in pages per minute.  If a
     laser printer is rated at 12 pages per minute (PPM), this
     figure would be true only if the printer is printing the same
     data on each of the twelve pages, so that the bit map is
     identical.  This speed however, is rarely reached if each page
     contains different codes, text, and graphics.
  
     In 2001, Xerox's Phaser 1235 and 2135 (with Okidata engines)
     could print up to 21 colour ppm at 1200x1200 DPI using a
     single-pass process.
  
     Colour laser printers can reach 2400 DPI easily (e.g. an HP
     LaserJet 8550).  Some printers with large amounts of RAM can
     print at engine speed with different text pages and some of
     the larger lasers intended for graphics design work can print
     graphics at full engine speed.
  
     Although there are dozens of retail brands of laser printers,
     only a few original equipment manufacturers make print
     engines, e.g. Canon, Ricoh, Toshiba, and Xerox.
  
     (2002-01-06)
  

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