verena 314A Drum Unit Cartridge Compatible for Laserjet Pro Printers Black Ink Toner

Easy to install and Use: Each cartridges are passed through strict quality checks for durability and compatibility. Functionality: Toner cartridges work with a laser printing process. The printer's laser creates an electrostatic image on a rotating drum, and the toner particles are attracted to the charged areas on the drum. The toner is then transferred to the paper and fused onto it by heat, producing the final printed document.