Roland* Eco-Solvent EJ Compatible 1000ml Ink Cartridge (EJ) Roland* Eco-Solvent EJ compatible 1000ml ink cartridges from JeTechInk™ Brand are High quality, High Performance, and inks are dead on color wise, comparing to Roland's original inks = no need for new profiles! Our ink formulations are clog and misfiring free. JeTechInk™ Brand inks are always 100% compatible with the OEM. No flushing is needed. Mix & Match are always available for versatility and savings. Just Plug and Play. Works with the following Roland* Large Format Printers: SolJet EJ-640