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Black ink not printing

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HP Officejet Pro 6960
Microsoft Windows 10 (64-bit)

The black ink only prints one or two pages after running the 'clean printhead' process a few times and the 'clean smears' process too.  The back of the page is clean, the colour prints fine, but no black ink.  

After a few printhead cleans the test page comes out almost perfect, but not 100%; the black squares are not 100% complete.  


The documents all print out but without any black ink.  The cartridge feels like it has plenty of ink in it, and the levels indicate that it is over half full.  The printer tells me to replace the cartridge.  How can I order a replacement black cartridge as I won't be sent one until the black ink runs low - which it won't do! 


Thanks for the help.

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@sb95, Welcome to HP Support Community!


To assist you better, We would need some information related to your Instant Ink Subscription. This information cannot be shared on a public post.

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