Question about HP Officejet Pro L7780 All-In-One InkJet Printer

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White line down side of page when scanning

What could casue a white line about 2 inches in from the right border that goes down each page?

Thanks for your help.

TheaDG I have the same problem only my line is blue. I tried cleaning the glass to no avail. Any other suggestions?

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I chatted with HP and they told me to clean the ADF frame which had some dust particles on it. Problem solved.

Posted on Jul 23, 2008

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Line all the way down the page when scanning on hp 3050


You have to clean the scanning glass. lift up the scanner cover and you will see a piece of glass 1/2 inch wide 8 inches long. Thats the glass to clean. look very close and you will see something like white out on it. Thank you, Steven 805-520-3003

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What causes a line down the middle of copied pages


There is something on your scan glass. My guess is you are getting the line on your copies when you run the original through the document feeder. If you get lines through the document feeder but not on copies made off the glass then it is a dirty scan glass. There is a thin glass strip where the document feeder feeds the original. Usually something like white out that did not dry smears off an original and ends up on this thin strip of glass. Scratch it off with your finger nail and use some glass cleaner to resolve the problem. The scan glass is about 1/2 an inch to an inch wide and will be on the same side of the machine that the copier feeds the originals in on.

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1/2" white line appearing down right side of page


Try replacing the toner cartridge. This seems to be a problem with the photo-sensitive drum, which is located in the cartridge.

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When scanning or copying from either the ADF or the flatbed, my 7310 puts a black line all the way down the right side of the page exactly 1 1/2 inches from the right edge. I have cleaned the glass (and...


You can check the white guide bar that sits above the glass, any marks on there will leave a streak because it is the white reference for the scanner. after that you will probably need a new scan assembly because sometimes single elements will burn out.

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2 Answers

Lines on my copies


As the page you wish to copy goes through the document feeder, it passes the scanner as well as a white plastic band that the scanner "compares" the dark writing or data on the page to. If this white plastic band is not very clean, the scanner reads the dirt as if it is part of the image you are scanning. Try cleaning the band as thoroughly as possible, as well as the small piece of glass to the left of the larger glass on the flat bed scanner. Make another copy to test your results.

Hope this helps!

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1 Answer

I print borderless several times & found white border both side


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1 Answer

White line down side of page when scanning


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1 Answer

Dark border one side of paper


This maybe your cleaning blade, your drum or the fuser unit....the best way to find out is to make a copy a to stop it before it's getting to the fuser unit ( that's the thing very hot). If you see your border it's your cleaning or drum...But when you replace a drum you must replace the cleaning blade to !


Hope it help !

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1 Answer

Non-printing gap/line down page


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