These printers use the TYPE 461-3 cartridge:

PitneyBowes-Imagistics DL 460

PitneyBowes-Imagistics DL 550

PitneyBowes-Imagistics IM 4720

PitneyBowes-Imagistics IM 5520

Imagistics DL 460

Imagistics DL 550

Imagistics IM 4720

Imagistics IM 5520