Laser printers
from class: College Physics I – Introduction Definition Laser printers are devices that use a laser beam to produce an image on a drum which is then transferred to paper using electrostatic charges. They are known for high-quality text and graphics printing.
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Predict what's on your test 5 Must Know Facts For Your Next Test Laser printers rely on the principles of electrostatics to transfer images onto paper. The process involves charging a photoconductive drum, exposing it to laser light, and then transferring toner particles to the charged areas. A laser printer's drum holds an electric charge that changes when exposed to light from the laser beam. Toner particles in laser printers are positively or negatively charged so they adhere to the oppositely charged areas on the drum. The final step in the printing process is fusing, where heat and pressure are applied to permanently bond the toner to the paper. Review Questions How does a laser printer use electrostatic charges to create an image? What role does the photoconductive drum play in a laser printer? Why are toner particles attracted to specific areas on the drum in a laser printer?
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