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 MF640 Series and LBP622Cdw use Canon Genuine Toner 054 CMYK (CMY yields 1,200 sheets, K yields: 1,500 sheets, ISO/IEC standard) and Cartridge 054 High-capacity CMYK (CMY yields 2,300 sheets, K yields 3,100 sheets, ISO/IEC standard).