For best printing results, use up a cartridge within six months of opening the package. If you need to replace a cartridge when the ink light is flashing or off, you can run the Ink Cartridge Replacement utility.
1. Windows: Right-click the printer icon in the bottom right corner of your screen (the taskbar) and select Printer Settings. Click the Maintenance tab.Macintosh: Open the Applications folder, open the EPSON Printer Utility3, select your printer (if necessary), and click OK.
2. Click the Ink Cartridge Replacement utility icon and follow the on-screen instructions to replace your ink cartridges as necessary.