The Epson T13 is a printer designed by Epson Company for use with PCs and laptops. print cartridges are used to store and distribute the ink to print. Finally, the ink in these cartridges is depleted and will have to replace the cartridge or ink refill. Some electronics stores computer can refill cartridges for payment if you provide the ink. If you want to save some money, you can fill and reset these cartridges on their own.