The Canon MC-G02 maintenance cartridge is an essential component of your printer. Designed to be easily replaceable by users, it absorbs the ink used in printhead cleaning cycles and during excess ink overspray. Once your cartridge is full, you will be notified by the screen on your printer. Replace the maintenance cartridge occasionally to ensure high-quality printing and smooth functioning. This maintenance cartridge absorbs the ink used in printhead cleaning cycles and during excess ink overspray. Protects the printer from internal ink leakage. 1-year manufacturer limited warranty. Ensures high-quality printing and smooth printer functioning. Compatible with Canon PIXMA MegaTank G3560/G2520/G3420/G1420/G550/G3520/G1520/G2460/G650/G540/G256/G3460/G2420/G640/G1220/G2260/G3260 printers. Designed to be easily replaceable by users to reduce the need for repair services