These printers use the 8R-3626 cartridge:
Click On a Printer to View it's Cartridges
          Xerox-Tektronix 7020
          Xerox-Tektronix 7021
          Xerox-Tektronix Telecopier 7020
          Xerox-Tektronix Telecopier 7021
          Adler-Royal FX 2000
          Adler-Royal FX 2100
          Olivetti FX 2000
          Savin 7020