All Black Ink cartridge-complete set for Epson R1800 (8-18ml Cartridge Set). Our ALL BLACK JetBlack ink system for the Epson R1800 is optimal for printer performance, cost savings, and ink density. When using the AccuRip software the Epson R1800 can be directed to print black ink out of all the channels. JetBlack ink is specially formulated for optimal ink density and quick drying performance. These vacuum sealed cartridges are more reliable and perform better than any bulk system. Emagine not having to refill a bulk system, bleed lines, and no more black fingers from dye ink stains. When loaded with JetBlack ink cartridges the Epson R1800 can hold 144 ml’s of ink and provides a high quantity high quality output that is unrivaled by any bulk system or other black ink solution for the Epson R1800.