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‎10-11-2021 11:19 AM

HP Recommended
Product: HP Photosmart 6520
Operating System: Microsoft Windows 10 (64-bit)

Latest printout was very faded, I thought it was time to replace the black ink cartridge; I have now tried 3 new HP black ink cartridges and still printouts are very faded; diagnostics show "blank " black on printout (other colors print very well) but showing cartridge is full.  Have attempted cleaning the printer head feature many times but not helping.  Thank you for your help

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