Formulated with fast-drying pigment ink designed for high-speed print jobs, Epson DURABrite Ultra ink cartridges make your professional documents stand out with sharp text, bright colors and print-shop-quality results. This Epson printing system is designed to be used exclusively with Epson genuine cartridges. SmartValve Control Technology employs a pressure-activated valve to smoothly and rapidly deliver ink to the printheads at variable rates. MicroPiezo ink level sensor accurately detects the ink level within the cartridge and automatically alerts the user when ink is low.