Smeared and uneven black ink on my HP OfficeJet Pro 8600

[TMKN]

Print is smeared and uneven for black print cartridge but fine for colored cartridges.  Replaced HP black Cartridge with new black cartridge and problem continued (actually seemed worse). 

[KrazyToad]

@TMKN

I have gone through your post and I understand your concerns

Try cleaning the Printhead and check if that helps

1. Load plain white paper into the tray.

2. On the printer control panel, swipe the display to scroll to Setup, and then touch the Setup icon (). The Setup menu displays.

3. Swipe the display to scroll to Tools, and then touch Tools.

4. Touch Clean Printhead.

   NOTE: Mechanical noises during the cleaning process are normal.

5. When the first cleaning stage completes, a test page prints. Examine the test page for print quality.

   • If these steps resolved the issue, touch No to skip the other cleaning stages. You do not need to continue troubleshooting.

   • If the issue persists, touch Yes to start the second cleaning stage.

6. When the second cleaning stage completes, a test page prints. Examine the test page for print quality.

   • If these steps resolved the issue, touch No to skip the last cleaning stage. You do not need to continue troubleshooting.

   • If the issue persists, touch Yes to start the last cleaning stage.

7. When the last cleaning stage completes, a test page prints. Touch OK, and then examine the test page for print quality.

If the issue persists you will need to replace the Printhead. You can contact HP Support for Service Options

Click on this link - www.hp.com/contacthp/ and select your Country to get the Contact details for HP Support

Thank you 😊

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