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 MF420 series and the LBP210 series use Canon GENUINE Toner 052 Black (yields 3,100 pages) and Toner 052 High Capacity Black (yields 9,200 pages), ISO/IEC standard.