I bought an HP 60 ink cartridge some time ago as a spare for when the ink cartridge in my printer ran out of ink. A few days ago my existing ink cartridge was almost out of ink so I installed the new cartridge. It wouldn't print. I tried various things to get it to print but nothing worked. Finally I poked a small hole through the paper on top of the cartridge trying to determine the status of the ink in the cartridge. If you know about ink cartridges you know they are filled with some type of course foam designed to hold ink.