These printers use the Type 665-7 cartridge:
Click On a Printer to View it's Cartridges
OCE VarioLink 3622
OCE VarioLink 4222
OCE VarioLink 5022
PitneyBowes-Imagistics VarioLink 3622
PitneyBowes-Imagistics VarioLink 4222
PitneyBowes-Imagistics VarioLink 5022