Question about Brother MFC-7440N Laser Printer

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Black line on copies produced

Original document fed into top feed tray of MFC 7440N model come out with a thin black line on mid-right side of copy produced. Have cleaned all surfaces readily available with no improvement. What's the next step to try to resolve this?

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Take a look at your drum. If there's a green tab on the exterior, move that all the way to the left. That should get rid of the black line.

Posted on Jan 25, 2010

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How to make duplex copies with a Brother MFC-240C printer


The Brother MFC-240C is a well-performing multifunction color printer. There is a lot that it can do, but one limitation it has is the inability to make double-sided copies. If you need to make a duplex copy of something, you can do it manually by re-feeding the paper once you've copied the first side.

After the first side of the page has been printed, let the paper sit for a minute or so to make sure the ink has dried. Then, put it back into the paper tray on the top of the stack. Make sure the back side of the page (the side that has not been printed on yet) is facing down, and the lead edge of the page (the edge that was fed out of the printer first) is facing toward the inside of the printer, rather than toward you.

Once the paper is set, push the tray back in and print the document or image that you want to appear on the back of the page. If you are printing multiple pages, position the paper so that the page you want printed on first is on the top of the stack.

The MFC-240C was not designed for duplex printing, so you may run into some issues with it, especially when you are using very thick or very thin paper. With very thin paper, the ink may bleed through to the other side of the page. With very thick paper, you may have to let the paper sit for a longer time after the first side is printed, because the ink could take longer to set and dry.

on Jul 06, 2010 | Brother MFC 240C All-In-One InkJet Printer

1 Answer

When using the copier a 1/2 inch black line on right side on top of the copy. Cleaned glass, no nicks just started. it does it with autu and manual feed.


Did yo clean the thin glass on the extreme left side. If you lift the document feeder cover, you'll see the thin glass strip. Make sure it's clean.

Mar 05, 2011 | Epson Artisan 800 All-In-One InkJet...

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Dear Sharp Al-2030 Experts: Paper Copies made from the cover-mounted auto-feed system are produced with a full copy-length thin double line separated by an approximately 1 13/16" wide distance. It is...


There is something on your scan glass. 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. Once the glass is clean your problem is solved!

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Original document fed into top feed tray of mfc 7440N model come out with few thin black lines on the mid left of the scanned file. Scanning file from glass has no issue.


You need to clean the narrow glass strip on the left side of the machine when you open the cover. There is likely lint or something on this glass. This is where the auto document feeder pages are "imaged".

May 20, 2010 | Brother MFC-7440N Laser Printer

1 Answer

We have a black line down the center of all copies...


If the problem only happens on copies or sent faxes then no it is not your drum. 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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Black line is present when copying document; not


This sounds as if you have some ink/contamination on the small scaning glass that sits to either the left or right of the main glass on the copier.(Depending on the model/make)As your original is scanned over this thin piece of glass the scanning device will see any spots and this will result in a black line down the page.Please clean the glass with a soft rag.

Oct 12, 2009 | Office Equipment & Supplies

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Black line down page when coping from copy feed


The small glass surface at the top of the scanner bed had some gunk on it. I scrapped it off and the line went away! Yay!

Jan 01, 2009 | Brother Multi-Function Center MFC-240C...

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I have a brother copier model dcp 7025 and am experiencing a vertical line on copies where the original is fed through the top feeder tray but the copies are fine when the original is placed directly onto...


Depends which way is vertical but I think the feed rollers on the upper tray are slipping perhaps dirty. (The paper momentarily stops feeding past the scan sensor)

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Print Problem - vertical lines


If the problem only occurs when using the document feeder, the problem is not usually caused by the drum. When using the document feeder, try to notice where the scanner (the light assembly under your scan glass)stops just before the paper is being fed. Some multifunction machines have a small piece of glass that is separate from the large scan glass and the scanner assembly stays parked underneith it as the original is being fed over it. Most likely there is something on the glass where the scanner parks as originals are being fed thru the feeder. When putting your original on the large scan glass to copy, the mark on the glass will only show as a spot, but will show as a vertical line thru the whole copy when using the feeder.

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