Question about Brother MFC-7340 All-In-One Laser Printer

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My feed copies are coming out with black lines through it and I need to clean it for clear copies

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We are talking about the MFC-7340, right? Vertical/repeating lines usually mean a drum going bad or an incorrect toner used (one that sticks to the drum). It is not recommended though to clean the drum yourself as you may scratch it. Ebay always have a drum for your printer for a very reasonable price.

If you do want to clean the drum than pull the cartridge out, slide the drum covering door and clean with a dry cotton ball turnind the drum by the white sprocket. Do not touch with your fingers!!!

Posted on Mar 14, 2011

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Posted on Jan 02, 2017

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1 Answer

Horizontal line on printed page


When you use the flatbed the copy is perfect because the ccd sensor is under the glass cover and obviously is free form dust/ dirt.
On the other hand if you use the feeder the ccd sensor is located in between the roller assembly (not sure exactly for this model).
This means that the page is scanned by the ccd in the feeder, any dirt on the ccd will appear as a black line. I assume that you are feeding papers from the side and not from the top that is why you get a horizontal line.

A quick test to see if the ccd sensor is dirty is to feed the paper from the top side to the feeder. If you get a vertical line it is a proof that your ccd sensor needs to be cleaned.
The worst case is that the sensor in the feeder assembly has a tiny spot that is damaged and it is causing the black line.
So , first try the test, then open the feeder assembly, locate the ccd and clean it. Hope that this helps.

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1 Answer

When i copy or fax get a black ink line down the page


Do you get a black line when printing also ? If not the **** glass the "reads your document has something on it (like whiteout). Lift the cover where you feed documents in and take a look for a small clear plastic window that runs from left to right and clean it with alcohol. Good luck !

Jan 30, 2011 | HP Office Equipment & Supplies

1 Answer

I have the SCX-4521. When I feed paper into the top to make copies, the copies come out with a black line in the middle of the page from top to bottom. However, if I make copies by laying the page on the...


Hi there,

Have look where the paper feeds into the tray at the top.

Most likely there is a piece of rubbish stuck in there, another piece of paper or some fluff or something. Blow it out and give it another try.

If this doesnt work open the lid and have a look to the far left of the plate glass. you will notice a small plate glass seperate from the main plate running parallel with the main plate. Clean this with a damp cloth and some window cleaning detergent. Sometimes correction fluid gets wiped off onto this portion which acts as the Scanning Region for documents inserted on the top feeder. This causes a "permanent" black object being scanned for copying, hence the black stripe.

Regards,
BD

Sep 02, 2010 | Samsung Office Equipment & Supplies

1 Answer

Black line on copies produced


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.

Jul 16, 2009 | Brother MFC-7440N Laser Printer

1 Answer

Automatic feed gives a white line in copy or scan


Although this problem would normally show as a black line on the copy, it's quite possible that there is something white (i.e. a piece of tape or paper) stuck on the scanner where the page feed passes through. Clean this area carefully with a soft cloth.

Jun 01, 2009 | HP LaserJet 4345mfp Printer

1 Answer

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UNPLUG THE PRINTER AND USE Q-TIPS AND RUBBING ALCOHOL TO CLEAN THE ROLLERS AND THE TRACK INSIDE OF PRINTER.THEN PLUG BACK IN AND SHOULD CLEAR UP THE PROBLEM.

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3 Answers

Black line on copy


Hi there,

Have you try to print with other tray also. Is it fine.

Your printer need cleaning of the roller, just open the cover and try to clean all the dust and ink.

Regards
ELLIN

Sep 23, 2008 | HP LaserJet 3330 All-In-One Printer

2 Answers

Cannon IR 400S Copier


1-en front door look inside and see if there are black rings around the shiny Drum cylinder, if yes replace drum blade (may have to replace drum also).
2- if lines only come when doing from ADF then lift top and clean the small strip of glass.

Sep 13, 2008 | Canon imageRUNNER 400S Copier

1 Answer

Black lines on scanned copies


Try this. Lift the lid to expose the top glass. To the left of the main glass panel, you will see a narrow glass strip. Clean this strip using a soft cloth or sponge moistened with a nonabrasive glass cleaner, then dry it off with a dry chaois cloth or cellulose sponge. A.

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