Print quality

[Bg5099]

Recently installed new ink cartridges. Now my OfficeJet Pro 6978 will not print black or blue. I have tried cleaning printheads through the electronic settings and it has not dramatically fixed the problem. 

wondering how I can restore the printing ability as I was printing on this 5 days ago no issues and now no blue or black (can’t print word documents with black ink for work) 

please let me know any and all solutions/remedies

[Hawks_Eye]

Hi @Bg5099 

Welcome to the HP Support Community!

Thanks for posting your query! We're here to help you get back up and running.

It sounds like you're experiencing a frustrating issue with your HP OfficeJet Pro 6978 printer after installing new cartridges. Here’s a detailed troubleshooting guide to help restore the ability to print black and blue:

1. Verify Cartridge Installation

• Remove the black and blue ink cartridges and ensure they are properly seated in the correct slots.
• Check for protective tape (if the cartridges are new) and ensure it’s removed.
• Reinsert the cartridges until you hear a click, signaling secure placement.

2. Check Ink Levels

• Open the HP Smart app or printer software on your computer to review the ink levels.
• If the printer detects low or empty cartridges, replace them with fresh ones.

3. Manually Clean the Printheads

• Open the printer’s cartridge compartment and carefully remove the cartridges.
• Inspect the printheads and wipe them gently with a lint-free cloth dampened with distilled water.
• Allow the printheads to dry before reinserting the cartridges.

4. Run Deep Cleaning via Printer Settings

• Access the Maintenance menu on the printer or through the HP Smart app.
• Run the Deep Printhead Cleaning tool (different from regular cleaning) to clear stubborn clogs.

5. Perform a Test Page

• Print a Test Page to check if black and blue inks are restored:
  • Navigate to the printer settings and select the Print Test Page option.
  • Look for color alignment or print quality issues.

6. Update Printer Firmware

• Firmware updates can fix bugs that affect printing quality. Visit the HP Support website to download and install the latest firmware for the OfficeJet Pro 6978.
  Update the firmware on an HP printer | HP® Support

7. Reset the Printer

• Turn off the printer and unplug it from the power source.
• Wait for 2-3 minutes, then reconnect and turn it back on. This clears temporary glitches.

8. Inspect the Paper and Print Settings

• Ensure the paper type matches the printer settings (e.g., plain paper for documents).
• Check the print settings to confirm black and blue ink usage is enabled.

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Take care, and have an amazing day!

Regards, 

Hawks_Eye