The genuine Xerox 106R02731 is the most cost effective way of running the Xerox Phaser 3610DN (and all other compatible printers) with a genuine Xerox toner cartridge. The high page yield of 25,300 pages also makes it surprisingly reasonable. As a mono laser toner cartridge the Xerox 106R02731 contains only top quality black toner powder. The genuine Xerox toner powder found within the 106R02731 is capable off sharp lines and characters, gradual gradients and great expanses of solid black.