Our Compatible Thermal Cartridges are guaranteed to give you the same results as new Panasonic thermal cartridges. You use them exactly the same as you would new Panasonic thermal cartridges - when your printer runs empty, you remove the old thermal cartridge, replace it with one of our Compatible Thermal Cartridges and continue printing just as you would with a new Panasonic thermal cartridge.  Save money without compromising print quality!