check your printer and ink refill information on google. Many cartidges have a chip that tells the computer when it is empty. You can refill all you want, but if you don't have a "chip resetter" it will never tell the computer there is ink in the cartridge.
If you have a refillable cartridge, they had kits in ceducomp in Puerto Plata a while back.
Too much work for me. I just buy new cartridges when I need them.