Toner cartridge is specially formulated and tested to provide the best image quality and most reliable printing you can count on page after page in Xerox Phaser 4600 and 4620. Xerox Genuine Supplies and Xerox equipment are made for each other. Cartridge yields approximately 13,000 pages.Toner cartridge is specially formulated and tested to provide the best image quality and most reliable printing you can count on page after page in Xerox Phaser 4600 and 4620. Xerox Genuine Supplies and Xerox equipment are made for each other. Cartridge yields approximately 13,000 pages.