Sprays ink at a sheet of paper. Uses the same technology as copy machines. Laser printers produce very high quality text and graphics. Similar to a laser printer, but uses liquid crystals or light-emitting diodes rather than a laser to produce an image on the drum. Contains a chain of characters or pins that print an entire line at one time.
Line printers are very fast, but produce low-quality print.
An inexpensive printer that works by pushing heated pins against heat-sensitive paper. Thermal printers are widely used in calculators and fax machines . Daisy-wheel printers tend to be the slowest, printing about 30 cps. Dot-matrix printers can print up to 500 cps, and laser printers range from about 4 to 20 text pages per minute. The important difference between impact and non-impact printers is that impact printers are much noisier.