Laser printer
From The Glossary of Digital Photography
A printer that uses lasers as part of the printing process. The laser printer is designed to be attached to a computer. It uses the xerography process made popular by the Xerox Corporation beginning in 1971. A laser printer produces high-quality output, even from small personal computers. Although it is usually not considered a photographic-quality printer, it is used quite frequently for text documents. Black-and-white laser printers are the most common, but color laser printers are available. The lasers write the data on a photoreceptor drum by electrostatically charging (or not charging) individual dots on the drum. Toner particles are also charged, in an opposite polarity, and then allowed to be attracted to the drum. The toner particles are then transferred to sheets of paper, which are passed through heated rollers to fuse the toner to the paper. Laser printers can operate fairly quickly. Most laser printers operate at about 600 dpi, producing fairly high-quality text output.
