These printers use the CLI271XLBK cartridge:
Click On a Printer to View it's Cartridges
          Canon Pixma MG-5720
          Canon Pixma MG-5721
          Canon Pixma MG-5722
          Canon Pixma MG-6800 Series
          Canon Pixma MG-6820
          Canon Pixma MG-6821
          Canon Pixma MG-6822
          Canon Pixma MG-7720
          Canon Pixma TS-5020
          Canon Pixma TS-6020
          Canon Pixma TS-8020
          Canon Pixma TS-9020