Canon CLI-521 ink cartridge cyan for use in iP3600, iP4600, MP54, MP620, MP630 and MP980 printers. OEM: 2934B001. Install a Canon 521 Cyan Inkjet Cartridge in your PIXMA inkjet printer to enjoy high quality documents and photo prints. Each Canon CLI-521C cartridge uses Canon FINE (Full Photolithographic Inkjet Nozzle Engineering) print heads for incredible crispness and detail. These printheads, combined with uniquely formulated Canon cyan ink, provide exceptionally long-lasting prints under the Canon ChromaLife 100 system.