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. The Single-Cartridge System combines the toner and drum into the same unit, which means you only have one consumable to replace. The D1650 and D1620 use Canon GENUINE Toner 121 Black (yields approximately 5,000 pages), ISO/IEC standard.