These printers use the BCI-15C (2 pack) cartridge:
Click On a Printer to View it's Cartridges
          Canon I 50
          Canon I 70
          Canon I 70 Color Printer
          Canon I 70 Color PTR
          Canon I 80
          Canon I 80 Color Printer
          Canon Pixma IP-90 V
          Canon Pixus 50 I
          Canon Pixus 80 I