OfficeJet Printer Quality Issue

[RidiculousAnnoy]

Hi

we are having an issue with our print quality on our OfficeJet Pro 6978. We have tried everything we can find online (cleaning cartridge, aligning printer head, using a damp towel, etc) but still seeing an issue when we print. All cartridges are new and full, the printer test looks fine (see photo) but the actual print and scan quality keeps being poor and results in these horizontal lines. 

Anyone have any ideas?

  

 

[A_Gayathri]

Hi @RidiculousAnnoy,

Welcome to The HP Support Community.  

Thank you for posting your query, I will be glad to help you.

I understand you are facing an issue with your HP Product. Not to worry I will help you to get a resolution to the issue.

The horizontal lines in your prints, also known as "banding," can be caused by various factors, even after trying standard troubleshooting steps like cleaning cartridges and aligning the printhead. Here are some additional steps to address the issue:

1. Double-Check Print Settings

• Open the print dialog on your computer.
• Ensure the print quality is set to the highest setting (e.g., "Best").
• For documents with color, ensure that "Color" or "Automatic" is selected instead of "Black & White."
• If you're printing photos, select the correct paper type (e.g., "Photo Paper").

2. Verify Paper Type

Using the wrong type of paper can cause horizontal lines. Ensure:

• You’re using the type of paper specified in the print settings.
• The paper is smooth and not curled or damaged.

3. Perform a Second-Level Printhead Cleaning

Standard cleaning might not fully resolve clogged nozzles. Perform a deep cleaning or "second-level cleaning" from the printer menu:

1. On the printer, go to Settings > Tools > Clean Printhead.
2. After the first cleaning, run it again if the problem persists (but no more than three times in a row).

4. Check for Firmware Updates

An outdated firmware version can impact printer performance.

• Go to the HP support page and check for firmware updates for the OfficeJet Pro 6978.
• Download and install the latest version if available.

5. Inspect the Ink Cartridges

• Ensure the protective plastic tape was completely removed from all cartridges.
• Double-check that they are genuine HP cartridges, as third-party cartridges may cause quality issues.
• Verify that cartridges are installed correctly and firmly.

6. Check for Printhead Alignment Issues

Run a printhead alignment test again, as poor alignment can cause banding:

1. From the printer control panel, go to Settings > Tools > Align Printer.
2. Follow the instructions to complete the alignment.

7. Manually Clean the Printhead

If automated cleanings haven’t helped, try manual cleaning:

1. Turn off the printer and unplug it.
2. Remove the printhead assembly (consult the user manual for instructions).
3. Use a lint-free cloth dampened with distilled water to gently wipe the printhead nozzles and contacts.
4. Allow it to dry completely before reinstalling.

8. Test Another Document

• Try printing a different document or image to confirm it’s not a file-specific issue.

9. Test a Scan

The poor scan quality may indicate a separate problem with the scanner glass or ADF:

• Clean the scanner glass and the ADF strip with a soft, lint-free cloth dampened with glass cleaner.
• Ensure no smudges or dirt remains.

Refer to this document: HP OfficeJet 6900, 8010, 8020, 8030 printers - No black ink, wrong colors, other print quality issue...

I hope this helps. 

Take care and have a good day.

Please click “Accepted Solution” if you feel my post solved your issue, it will help others find the solution. Click the “Kudos/Thumbs Up" on the bottom right to say “Thanks” for helping!

[RidiculousAnnoy]

Hi

Unfortunately these suggestions did not work, do you have any other ideas on how to resolve this issue?

Thanks in advance

[A_Gayathri]

Hi @RidiculousAnnoy ,

Thank you for your response, I appreciate your efforts. As the issue persists, I am sorry to hear that I'm sending out a private message to assist you with the next course of action. 

Please check your Private -icon on the upper right corner of your HP Community profile Next, to your profile Name, you should see a little blue envelope, please click on it or simply click on this link.

I hope this helps! Keep me posted for further assistance.

Please click “Accept as Solution” if you feel my post solved your issue, it will help others find the solution. Click the “Kudos, Thumbs Up" on the bottom right to say “Thanks” for helping!