My HP OJ Pro 6978 Printer

[Sisterleether]

Hello, HP Community. 

How come there's an extra vertical black line when I print from my above printer?

[Garp_senchau]

@Sisterleether, Welcome to HP Support Community,

Thank you for posting your query; I’m here to help by guiding you through steps to resolve this issue

• Make sure the ink cartridges are properly installed and not empty. Replace them if needed.
• Use the printer’s built-in cleaning feature to clean the printhead. You can do this from the printer's menu or through the HP software on your computer.
• After cleaning, align the printhead using the printer’s settings to ensure everything is in the correct position.
• Make sure you’re using the correct paper for your printer and that there are no paper jams or obstructions.
• Ensure your printer drivers and firmware are up to date by downloading the latest versions from HP’s website.
• After cleaning and updating, print a test page to see if the issue is fixed.
• If nothing works, try resetting your printer to factory settings, but remember you’ll need to set it up again.

Refer to these guides:

How to fix vertical bands, lines, or streaks in copies or scans on your HP printer| HP Support

HP OfficeJet 6900, 8010, 8020, 8030 printers - No black ink, wrong colors, other print quality issue...

I hope this helps.

Please feel free to reply here if you have any questions or if you need further clarification on any of the steps. 

Take care and have a good day. 

If my response helped, please mark it as an Accepted Solution! ✅ It helps others and spreads support. 💙 Also, tapping "Yes" on "Was this reply helpful?" makes a big difference! Thanks! 😊

Regards,