Keep your Phaser 7500 laser printer running even with frequent use by installing a genuine Xerox high yield toner cartridge (106R01439). Keep a spare cartridge on hand for quick change over when you see the Replace Black toner cartridge error on your Phaser printer. You'll be printing again in no time thanks to the ease of installation and the Xerox quality. This high capacity toner cartridge works longer and harder with your Xerox printer, yielding up to 19,800 pages.