These printers use the STI-24B6237 cartridge:
Click On a Printer to View it's Cartridges
          Source-Technologies ST 9712
          Source-Technologies ST 9712 MICR
          Source-Technologies ST 9715
          Source-Technologies ST 9715 MICR
          Source-Technologies ST 9717
          Source-Technologies ST 9717 MICR
          Source-Technologies ST 9720
          Source-Technologies ST 9720 MICR
          Source-Technologies ST 9722
          Source-Technologies ST 9722 MICR