Information From The Experts
What is a Drum and Why do I need one?
By Karen Phillips from Direct Office Products
I have a laser printer - so what is a drum and why do I need one?
I am often asked what is the difference between the toner and the drum?
The drum is a waste collection unit. It is a consumable part and will need to be replaced when your print appears excessively blackened, or you get a check drum warning.
A laser beam produces an image on a drum. The light of the laser alters the electrical charge on the drum wherever it hits. The drum is then rolled through a reservoir of toner, which is picked up by the charged portions of the drum. Finally, the toner is transferred to the paper through a combination of heat and pressure.
So, the drum is what holds the image itself.. the toner cartridges hold the black and/or color toners that are transferred to the drum.
The drum usually needs to be replaced around every 5 toners.