Designed by Canon engineers and manufactured in Canon facilities, GENUINE supplies are developed using precise specifications, so you can be confident that your Canon device will produce high-quality results consistently. High capacity toner options keep up with your busy printing needs, so you have less replacement efforts and more time. The Single-Cartridge System combines the toner and drum into the same unit, which means you only have one consumable to replace. The LBP325dn uses Canon GENUINE Toner 056 Black L (yields 5,100 pages) and Toner 056 Black Standard (yields 10,000 pages), ISO/IEC standard.