I have been using this printer for almost 2 years, and I really can't afford a new one while in school, so I am hoping someone can help me. I have always used the generic ink, but today the printer won't recognize the black cartridge. I even put the old one back, but it will no longer recognize that one either. I tried cleaning the contacts on both printer and ink. I have also tried three separate black cartridges, but none of them work. No problems with any other colors.