These printers use the STI-24B6237 cartridge:
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