These printers use the M6903 cartridge:
Click On a Printer to View it's Cartridges

          Apple Color InkJet
          Apple Color Printer
          Alcatel 8391 OP2
          Canon BJC 800 ColorPrinter
          Canon BJC 820 ColorPrinter
          Canon BJC 820 J
          Canon BJC 880
          Canon BJC 880 Color Printer
          Canon BJC 880 J
          Canon BJC 880 J Color Printer
          Canon BJP C-80
          Canon BJP C-81
          Canon CJP C-80
          Gestetner C 6770
          IBM 4079
          IBM 4079-001
          IBM 4079-002
          IBM Color Jetprinter
          IBM Color Jetprinter Plus
          IBM Color Jetprinter Ps
          IBM ExecJet
          IBM ExecJet 4072
          IBM Jetprinter 4079
          IBM Jetprinter 4079 Plus
          Lexmark ExecJet
          Nashuatec C 970
          Spectrum Spectrum
          Sun NewsPrinter CL Plus
          Sun Newsprinter Cl+ Color Ptr
          Sun Sunpics Newsprinter Cl+