Genuine Xerox VersaLink C7000 Series High Capacity Black Toner (23,600 pages) - 106R03737 is specially formulated and tested to provide the best image quality and most reliable printing. Genuine Xerox supplies and Xerox equipment are made to work perfectly together. Reject imitations. Compatible toners may cause malfunctions in Xerox printers and lead to poor print quality and weak colors. With over 75 years of experience, genuine Xerox supplies are something you can trust.