Printer streaking in color printing

[WmWahl]

I am experiencing streaking and non-printing of parts of the Blue color with my HO Office Jet Pro 6978 printer.  I have used the print head cleaning tool and have replaced the blue cartridge.  No change.  any ideas?

[Raj_05]

Hi @WmWahl,

Welcome to HP Support Community.

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

Streaking and non-printing of parts of the blue color in your HP OfficeJet Pro 6978 printer can be frustrating, but there are a few more steps you can take to try and resolve the issue.

• Check the Print Head: Since you've already used the print head cleaning tool and replaced the blue cartridge, it's possible there could be a problem with the print head itself. Sometimes print heads can become clogged or damaged, especially if the printer hasn't been used for a while or if there was a previous issue with ink flow.
• Manual Cleaning: You can try manually cleaning the print head. This involves removing the cartridges and gently wiping the bottom of the print head with a lint-free cloth dampened with distilled water. Be careful not to touch the nozzles directly.
• Automatic Cleaning: Run the printer's automatic print head cleaning utility again. Sometimes multiple cleaning cycles are needed to clear stubborn clogs.
• Check Cartridge Installation: Ensure that the blue cartridge is securely installed. Sometimes cartridges may not make proper contact with the printer's contacts, leading to printing issues.
• Printer Firmware Update: Check if there's a firmware update available for your printer. Sometimes firmware updates can resolve compatibility issues or bugs that affect print quality.
• Use Genuine Cartridges: Ensure you are using genuine HP cartridges. Compatible or refilled cartridges may not always provide the best print quality and can sometimes cause issues.
• Check for Ink Level: Verify that the blue cartridge has sufficient ink. Low ink levels can also cause printing problems.
• Print Quality Settings: Check the print quality settings in your printer's software. Sometimes adjusting the print quality to a higher setting can improve color output.

By systematically checking these factors, you should be able to troubleshoot and hopefully resolve the streaking and non-printing issues with the blue color on your HP OfficeJet Pro 6978 printer.

I hope this helps.

Take care and have a good day.

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Alden4

HP Support