Designed by Canon engineers and manufactured in Canon facilities, this genuine toner cartridge is developed using precise specifications so you can be confident that your Canon device will produce high-quality results consistently in your Canon imageClass MF440 Series and LBP320 Series. The Single-Cartridge System combines the toner and drum into the same unit, which means you only have one consumable to replace. High-capacity cartridge yields approximately 21,000 pages.