||On cartridge I.C. chip automatically tracks several ink usage data points for use in very accurate production cost estimations and reporting2 years from printed production date or 6 months after open for UltraChrome Ink and 2 years after open for Photographic DyeUltraChrome Ink Cartridge UltraChrome Ink Users: Your printer uses two black ink cartridges. Unless you are switching between black ink modes, use the same type of cartridges as are currently installed. Check their type by looking at the installed cartridges. If you install an incorrect cartridge, you will see the message WRONG INK CARTRIDGE.