In most cases, the cartridge is not yet vide.Les Epson ink cartridges have a chip with a counter that tells the printer the number of prints "open". Each time you print a document, the printer software using this value decreases by a certain amount. The printer is not based on the actual amount of ink but on this counter to determine that a cartridge is vide.Lorsque the number reaches zero, the printer does not just report to you: it is not working . The ink warning indicator lights. If you print, you are on the computer display an error message letting you know that there is more ink. It's over. We must replace the cartridge, even if there is a color you do not use. What's worse is that in most cases, the cartridge is not empty yet. But you are forced to buy a new cartridge, because as long as the former has not been replaced, you can not print NOTHING!