Ink Cartridges For Epson Expression Photo XP-850 Printer All our cartridges are 100% tested and guaranteed to work in your Epson Expression Photo XP-850 Printer. We have rigorously tested the ink cartridges in the Expression XP850 printer, for both , yields and color matching. Using our cartridges is 100% safe for your printer and will not void your printer warranty. These remanufactured cartridges for the Epson Expression xp 850 will save you over 50% on your ink cartridges budget.