This document explains how a laser printer works. It uses a xerographic process to quickly print high-quality graphics and text. The main parts are the photoreceptor drum, corona wire, laser, toner, and fuser rollers. The process involves charging the drum, using a laser to draw the image as electrostatic lines, applying toner which sticks to the lines, transferring the image to paper, and fusing it with heat rollers. Before repeating the process, the drum is cleaned to remove any leftover toner or charge. The key principle behind laser printing is using static electricity to transfer images.

1. LASER PRINTERKim EdnalinoBryan RodriguezElectron

2. LASER PRINTERWhat is a Laser Printer?It is something which uses a xerographic process to print high quality printouts and graphics easily and quickly.

3. LASER PRINTERHow does it work?Path Taken Through the Laser Printer

4. LASER PRINTERHow does it work?Parts of a Laser Printer

5. LASER PRINTERHow does it work?ChargingThe corona wire negatively charges the Photoreceptor Drum Assembly.

6. LASER PRINTERHow does it work?ExposureThe laser discharges areas of the PDA, drawing an electrostatic image.

7. LASER PRINTERHow does it work?DevelopingPrinter coats PDA with toner, a fine black negatively-charged powder. Because of its charge, it sticks only to the electrostatic image.

8. LASER PRINTERHow does it work?TransferringPaper passing through is given a stronger positive charge by the transfer corona wire. This is so it can pull out the image stuck in the drum.Since the paper might get stuck to the drum, the detaccorona wire discharges the paper after picking up the toner.

9. LASER PRINTERHow does it work?FusingIt finally passes through heated rollers, called fusers. It fuses the toner and the paper together. Paper doesn't burn for it passes through so quickly.

10. LASER PRINTERHow does it work?CleaningBefore the process can start again, the PDA in the printer is exposed to a discharge lamp, neutralizing the drum assembly.

11. The Physics Behind It…The simple concept of static electricity.Physics Presentation: Laser PrinterKimEdnalino, Bryan Rodriguez (Electron)

12. SOURCESHarris, T. “How Laser Printers Work” (2004) Retrieved on July 8, 2011; from http://computer.howstuffworks.com/laser-printer.htm“Laser Printer” (2011) Retrieved on July 10, 2011; from http://en.wikipedia.org/wiki/Laser_printerTHE END.Physics Presentation: Laser PrinterKimEdnalino, Bryan Rodriguez (Electron)