You should purchase what is called a "primer" for your particular cartridge. It is a tool, that your cartridge snaps into, an empty syringe attaches to the end where the head is located, when you pull back on the syringe plunger very slowly, it sucks the air out of the head, until just ink is coming into the syringe. Then you remove the cartridge from the primer, clean the head off, top it up with ink, and you are ready to go again.