I have been successfully printing from my HP Pavilion Notebook to a Officejet 7310 for years, and suddenly the when I try to print black ink it is printing medium green. I swapped out print cartridges (black 2x, and color 1x). When I test the Officejet 7310 standalone the self test report and alignment report shows all colors (and full cartridges on self test). HP Print Doctor passes all tests. I uninstalled the printer, and reinstalled the full 7310 software suite from hp.com. I suspect that there is an issue with a print driver that went bad, but thought the community might have other insights? Any suggestions?
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