The single black ink cartridge contains EPSON Quick Dry™ 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 Quick Dry inks lock into the paper as soon as they hit, quickly adhering to the paper fibres to give smooth, water-resistant & smudge-proof prints. Uniquely formulated with greater density, EPSON Quick Dry inks hold their shape perfectly once on the paper, giving you true-to-life colours & exceptional tonal quality.