An HP printer may not print black ink due to an empty or clogged black ink cartridge, dried ink nozzles, or incorrect print settings. Using draft or grayscale settings incorrectly can also affect black ink output. Outdated printer drivers or firmware issues may prevent proper ink usage. Running a printhead cleaning, reseating or replacing the black cartridge, and checking print prefer... https://sites.google.com/view/hp-printer-not-printing-/home