These printers use the TK-322 cartridge:
Click On a Printer to View it's Cartridges
Kyocera-Mita FS 3900 DN
Kyocera-Mita FS 4000 DN
Kyocera FS 3900 DN
Kyocera FS 4000 DN
Royal-Copystar FS 3900 DN
Royal-Copystar FS 4000 DN