The Xerox Phaser 6140 laser toner cartridges from LD Products are professionally manufactured compatible laser cartridges that are Guaranteed to meet or exceed the print quality of the OEM Xerox Phaser 6140 laser toner cartridges. Purchasing our Xerox Phaser 6140 cartridges is an excellent way to save money without sacrificing quality. Our Xerox Phaser 6140 laser toner cartridges have a '100% Quality Satisfaction' Guarantee. The use of our compatible laser toner cartridges for the Xerox Phaser 6140 does not void your printer's warranty. OEM laser toner cartridges are also available.