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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)
In addition suitable contents:
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