The Canon MC-G04 Maintenance Cartridge is a replacement cartridge designed to be easily user-replaceable. It's compatible with the Canon PIXMA G3270, G2270, and G1230 printers.The Canon MC-G04 Maintenance Cartridge is a replacement cartridge designed to be easily user-replaceable. It's compatible with the Canon PIXMA G3270, G2270, and G1230 printers.The Canon MC-G04 Maintenance Cartridge is a replacement cartridge designed to be easily user-replaceable. It's compatible with the Canon PIXMA G3270, G2270, and G1230 printers.The Canon MC-G04 Maintenance Cartridge is a replacement cartridge designed to be easily user-replaceable. It's compatible with the Canon PIXMA G3270, G2270, and G1230 printers.The Canon MC-G04 Maintenance Cartridge is a replacement cartridge designed to be easily user-replaceable. It's compatible with the Canon PIXMA G3270, G2270, and G1230 printers.