Thread: Laser Printer Technologies

Laser printers use three different printing processes to produce a printed page.

Electro-photographic (EP) proces.s: The EP process is the printing process used by virtually all laser printers. Its characteristics are the use of a laser beam to produce an . electrostatic charge and a dry toner to create the printed image.



Ught-emitting diode (LED) process: An LED printer uses an array of around 2,500 light-emitting diodes (like very small light bulbs) in place of a laser as the light source used to condition the photosensitive drum.

Liquid crystal display (LCD) process: An LCD printer uses light shone through an LCD panel in place of the laser to condition the photosensitive drum.