Too many printer users make the mistake of never checking their ink levels and then running empty in the middle of a big and important print job. Therefore, it’s important to check how much ink they have every once in a while or you’ll run into one of the regulars from the HP printer error code list eventually. Of course, these things won’t stay filled indefinitely, (And no, it doesn’t matter if you’re using official or remanufactured HP ink cartridges or official ones. To print those super-important legal documents and awesome photos, you’re going to need nicely filled HP printer ink cartridges. If you’re in the printing business, you know it’s all about ink (or, occasionally, toner).