The printer will not print black. I replaced the black ink cartridge and it printed a partial page then the page became light an then looked smeared and finally looked as if it had run out of ink at the bottom of the page. I ran the printer's diagnostics to clean print heads and realign print heads but still no black ink would print (and used quite a lot of the color ink in the print tests). I use HP products and thought the cartridge might be defective so I returned it - but it still will not print black. The next thing I did was to run the HP Print and Scan Doctor on line and it stated that the printer is working. I looked at YouTube for suggestiona and cleaned the print head with warm water and a paper towel, dried it and tried again - still no black print after several attempts to print a word document. Any other ideas out there?
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