These printers use the 106R402 cartridge:
Click On a Printer to View it's Cartridges
          Xerox-Tektronix Document WorkCentre Pro 555
          Xerox-Tektronix Document WorkCentre Pro 575
          Xerox-Tektronix WorkCentre Pro 555
          Xerox-Tektronix WorkCentre Pro 575
          Sharp FO 550
          Sharp FO 4650
          Sharp FO 4700
          Sharp FO 4970
          Sharp FO 5550
          Sharp FO 5700
          Sharp FO 5800
          Sharp FO 6700