Black Line Printing

[Taylor2021]

It seems this is a consistent issue, but no one has an answer.

I purchased  the HP 7740 printer a few weeks ago and EVERY TIME I print more than one page a black line appears on pages 2 and beyond. I've cleaned and aligned all cartridges.

The line seems almost like a single border line. It is about 1.5mm thick and lasts from the top to the bottom of the page.

I will be returning the printer if I can't get this fixed.

[Kumar0307]

@Taylor2021, Welcome to the HP Support Community! I’m here to help.

I understand the printer is printing a black vertical line. I appreciate your efforts in trying to resolve this issue by performing the necessary troubleshooting steps.

Try making a standalone copy from the flatbed glass and check if that works. By this, we can conclude if this is a hardware or a driver issue.

Perform the steps mentioned in this document. Clean the rollers and make sure the papers are properly loaded.

If the issue persists, I'm afraid this is a hardware issue with the printer. Please reach out to the HP Technical Support team in your region regarding the service/replacement options for your printer. 

You may create a case on the website to obtain a case number if required. Kindly watch this video to know how.

Keep me posted for any other assistance.

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Have a great day!