Printer might print the first 1-3 or so pages perfectly and then either completely blank pages or will print what seems like all the colors but NO black ink from then on. After the printer has been idle for a few days it will do the same thing, first few pages are perfect then nothing printed or no black ink for the rest of the day. Document type does not matter, pdf, word, note, etc all the same results. I have replaced the all ink cartridges with brand new HP verified cartridges several times and each time I get the same results. I have cleaned the heads several times, aligned them several times. All ink levels are good. I have run the print Dr many times. Printed many test pages that come out void of black ink every time. I have updated the software and print drivers. Turned the printer off, waited then restarted. Nothing works to fix this so far. Help?