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Common problems HP Solution Center not working : Adobe Flash Player Error and Unable to scan
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Printer not printing correctly

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HP Photosmart 6520

Color printing; black ink only printing every couple lines, but color cartridges are printing fine. Cleaned, aligned and bought a new black ink cartridge. 

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Hi @InHocSigno3572

Welcome to the HP Support Community. I'd be happy to assist you.


I understand the black is not printing fine. If you have tried the steps mentioned in this document and the issue persists, I'm afraid this is a hardware issue with the printer as you have already used a new black ink cartridge.

Note: You may try to make a copy in black or print a test page on the printer and check if the issue persists to conclude the issue as hardware.


Hope this helps! Keep me posted. 


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

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Have a great day! 

I am an HP Employee

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