Understanding Laser Toner Cartridges-Save Money on Cartridges By Constantine Lekendiros on Nov 20, 2008 in Gadgets and Gizmos | comments(0) The most important component of your laser printer is the laser toner cartridge. Laser toner cartridges hold and control the ink. In order to use your printer efficiently you need to understand how laser toner cartridges function.Most laser toner cartridges contain a certain color powder which is released on paper every time the laser beam inside the p