It is actually fairly difficult to refill an inkjet cartridge, so it is advised that you find a thorough guide and follow it step by step to properly perform an ink cartridge refill. First, you need to get your ink refill kit and fill a syringe with the ink color in question. It is advised that you fill this up over a sink or something else in order to prevent issues. Different cartridges hold a lot or a little ink, so make sure not to overfill it. A typical black cartridge can hold up to 17 ml of ink. Second, poke a hole into the top part of the cartridge, for color cartridges; make a hole at the top for each color section. It is also important to go slow when filling in order to prevent any overfilling and spilling.
Third, it’s not necessary to refill or cover the holes that you used to refill your cartridge. The cartridge already has breather holes on the top of it. Fourth, make sure to put ink that is unused back in the container it came from. Clean thoroughly the syringe with regular water and properly dry it before you put it back in storage for the next refill session. It is also a good habit to label each syringe in order to prevent using the same syringe on different colors.
Finally, once you reinsert the cartridge into the printer, it is best to run a cleaning cycle for at least three times. If you notice any flaws in the printed page, then make sure to run the cycle again. You should also keep in mind that you should never let your ink cartridge run empty. Be sure to refill it prior to the cartridge drying out in order to extend the life of the printer.