It could be bad ink cartridges. I just purchased mine on Amazon in a bundle. The first one I used worked great. But, it started acting like it was out of ink when the printer indicated it wasn’t out, but just a little low. I replaced it 2 times before I finally resigned to opening up the cartridges I received through HP’s Instant Ink program. Now it’s printing perfectly. I’m wondering if the cheaper ones on Amazon can’t stand the Arizona dry heat so they sort of expire, even if the tape has been removed from them…