What is a laser printer’s fusing process?

Published on March 5th, 2009 at 6:19 am

Last modified on August 13th, 2012 at 11:55 pm


What occurs during a laser printer’s fusing process?

A) The photosensitive drum inside of the laser printer is given an electrostatic charge, effectively creating a clean slate for the laser to expose an image.

B) A laser “writes” the image to the photosensitive drum, reversing the electrostatic charge on the drum and creating an image to which the toner will “stick.”

C) Toner particles are exposed to the photosensitive drum and are electrostatically attracted to the areas charged by the laser.

D) The toner on to the photosensitive drum is transferred to the paper.

E) Heat and pressure melts the toner particles so they will bond with the paper.

F) Excess toner is cleaned from the photosensitive drum.


Answer: E) Heat and pressure melts the toner particles so they will bond with the paper.

Laser printing is a complex process that takes numerous steps to complete. As a CompTIA A+ certified professional, you’ll need to understand the entire process from beginning to end.

The fusing process combines heat and pressure to melt and “fuse” the toner onto the paper. Without this part of the process, the toner particles would smear and fall from the paper.

The incorrect answers:
For this question, I wanted to also give you feedback on the entire laser printing process from beginning to end. I intentionally labeled the process in order so that you’ll have a reinforcement of the procedure that’s used each time a piece of paper flows through the laser printer. Memorize the path from A) to F), and you’ll be ready for most of the laser printer questions on your exam!

Want to know more? Watch “Introduction to Printers and Scanners.”


What’s the difference between an inkjet printer and a laser printer? How does a thermal printer work? How is a flatbed scanner different than a drum scanner? Get these answers and much more in this CompTIA A+ training video on printers, scanners, and all-in-one devices!

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Category: CompTIA A+ Pop Quizzes

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