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‎03-11-2017 04:30 PM

HP Recommended
Product: HP ENVY 7640
Operating System: Microsoft Windows 10 (64-bit)

I printed a text document and the sheet came out blank.  I tried printing a card from Hallmark Card Studio and the black ink would not print.  Both HP cartridges were low so I replaced them with HP cartridges, but the same thing happened.  I ran the HP Print and Scan Doctor and cleaned the printer heads...nothing changed.  I printed the test page and only two of the three black rectangles printed. The darkest one did not print.  What can I do?

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