Epson Stylus Pro 7800 7880 9800 9880 Matte Black UltraChrome K3 Ink Cartridge (110 ml). Epson UltraChrome K3 ink can produce archival prints with amazing color fidelity gloss level and scratch resistance while providing consistently stable colors that significantly outperform lesser ink technologies. This breakthrough ink technology also makes it the perfect choice for professional neutral and toned black and white prints with higher density levels and virtually no metamerism.