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We would like to share some of the most frequently asked questions about Instant Ink. Check out this link: HP INSTANT INK, HP+ PLANS: INK AND TONER. .
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Black Instant Ink cartridge doesn't work

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HP OfficeJet Pro 6978
Microsoft Windows 10 (64-bit)

The last Instant Ink black cartridge I received has not worked properly ever since I installed it. It started as very faint, and now it's not working at all.  I've cleaned the print heads several times and I've done several cartridge alignments.  Still won't work. My color cartridges work great. HELP!

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I'd like to help!


I understand you are facing print quality issues with the black cartridge.


I understand you have tried a couple of troubleshooting steps.


Were you able to try the steps in the document -Black or Color Ink Not Printing, Other Print Quality Issues


If not, please do and share the results.


Please send us a private message with your Instant Ink account details or you may also respond to the private message I've sent out and I'll help you out, accordingly. Check next to your profile name, you should see a little blue envelope, please click on it. 


Let me know. 


And, Welcome to the HP Support Community


Please click “Accept as Solution” if you feel my post solved your issue, it will help others find the solution.

Click the “Kudos, Thumbs Up" on the bottom right to say “Thanks” for helping!


Have a great day!

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