Conventional LED and Laser printers both function based on the same principles of electro photography. So how are they different? The answer lies in the image writing process:
LED Print Technology
A LED printer is a type of computer printer similar to the laser printer. LED technology uses a light emitting diode array as a light source in the print head. The LED bar pulse-flashes across the entire page width and creates the image on the print drum or belt as it moves past.
Depending on its design, LED printers would have faster print rates than some laser-based designs. They are also generally cheaper to manufacture than laser printers.
In contrast to LED printers, laser printers have to rely on elaborate combinations of rotating mirrors and lenses that must remain in alignment throughout their use. The laser component scans from one end of a line to another. The laser then begins on the next line in a much more cumbersome way than with a LED print head which has no moving parts.