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Check out our Black or Color Ink Not Printing, Other Print Quality Issues info about: Print quality and Cartridge Issues.

‎01-13-2019 02:48 PM

HP Recommended
Product: HP OfficeJet Pro 6978
Operating System: macOS 10.14 Mojave

The printer was low on black ink.  I replaced the cartridge and it wouldn't print.  I put in another new HP black cartridge and still wouldn't print.  It will print color.  It will print copies.  I have done a hard re set per the recommendation and still no change.  Help??

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