The single black ink cartridge contains EPSON QuickDry™ ink ensuring high quality, laser sharp black output. As part of the dual ink cartridge technology the separate black ink cartridge can be replaced individually for even lower printing costs.Super penetrating QuickDry inks lock into the paper as soon as they hit, quickly adhering to the paper fibres to give smooth, water-resistant and smudge-proof prints. Uniquely formulated with greater density, EPSON QuickDry inks hold their shape perfectly once on the paper, giving you true-to-life colours and exceptional tonal quality.