Question about Brother MFC-9440CN Laser Printer

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Ghost printing on my MFC-9440Laser

Happens only on black. I have cleaned the drum and the corona wires. Help!

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  • mack9388 Jan 17, 2009

    I've tried all these solutions from Brother. Thanks anyway.

  • mack9388 Jan 18, 2009

    Black toner is not empty. Machine is only a few months old. Have tilted toner and checked drum - perfect. Thanks anyway.

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  • Gary
    Gary Jan 17, 2009

    Have you replaced the black toner and drum?

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1 Answer

My Brother mfc 9440cn is printing a ghost image. how do you fix this?


The most common remedy is to clean the drum unit, but you have replaced that. Try cleaning the corona wires, p144 here

http://www.manualsprinter.com/manuals/brother/Brother_MFC-9440CN.pdf

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My Brother MFC-7420 Printer always prints black lines and splotches down the left side of my paper. This happens whether I'm scanning or printing from my PC. When I looked at my drum, it appears a


If you are seeing vertical streaks/black lines your primary corona wire is dirty and or the fax scanner may be dirty.
1)To clean the corona wire you take the drum unit and toner cartridge and place it on disposable paper to avoid spilling.
2) Clean the primary corona wire inside the drum unit by sliding the blue tab from right to left several times.
3) Return the blue tab and snap it into the home position.
4) Reinstall the drum unit and toner cartridge.
5) Close the front cover.
Caution: if you do not return the blue tab to the home position it may repeat the black lines.

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Thick black vertical line all the way down on left had side of page when printing


You may have figured this out, but I had the same thing happen on one of our Brother 2820 Intellifaxes. Turns out that if you don't return the corona wire cleaning tab (blue tab on the drum assembly) back to "home" position, it will block that portion of the corona wire and result in a black strip on any output where the cleaning tab is blocking the corona wire. Hopefully, this will help someone Googling for
the same issue.

Oct 02, 2012 | Brother MFC-9120CN Multifunction LED...

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My Brother MFC 7840W prints but has a faint copy of the previous paragraph about 3 inches below. I have cleaned the corona wire very thoroughly but still the 'ghost' printing on my documents. How do I fix...


Yes. The drum is most likely your problem. It is possible that it is a one time problem, which can occur if you print a very dark black page or image followed by a light gray page or image. If it has only happened once or twice try printing a different document to check it. If it is happening repeatedly, then you should replace the drum and instantly see it fixed. You can get a drum anywhere that supplies toner.

I hope this helps! Good luck!

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The drum unit may be at it's end. There is a report you can print that will say "Drum" life at the bottom of the page. I think it's the "User Settings" or something. Though it sounds like you can't print to find this out anyway....Do you recall how many times you've changed the toner without changing the drum? Usually you can expect about 4-5 toners on every drum. Once the drum's photo sensitive coating wears off it is incapable of charging correctly to print. Might just be time for regular maintenance. panderson@cartridgeworldusa.com with questions.

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BROTHER MFC-7220 When I print paper comes out with black line on right hand side of the paper. Its like somebody took a black marker and ruler and made a straight line from top to bottom.


The first thing I would try is to fix the corona wire. Here is a link to Brother's website outlining the process (clean corona wire).
What you need to do is pull out the drum and look for a blue tab on the top of the cartridge. Slide that tab back and forth along the wire and see if that clears things up.
I have had some luck cleaning the drum when I get black streaks but I have also hear this can be dangerous and make the problem worse.

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1 Answer

My brother mfc-7840w printer keeps telling saying there is a drum error and will not print. i clean the corona wire and reset everything yet the same thing happens again and again. how do i fix this?


The drum is the photosensitive roller that the image is charged onto so I'm afraid cleaning the corona wire won't help. If the drum is removeable try reseating it, otherwise it looks like you may need to buy a new drum kit for it.

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MFC-7420 GHOST IMAGES


sounds like a bad drumbur also can be caused by a defective fuser.

Jan 16, 2009 | HP LaserJet 1020 Printer

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Pls Clean Drum


The drum is the larger plastic unit that slides out an the toner cartridge fits into it. The corona wire is the very fine wire at the front top of the drum. Just slide the little cleaning tab back and forth.

Aug 03, 2008 | Brother MFC-8440 All-In-One Laser Printer

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Brother MFC 4800 print quality problem


I would try cleaning the drum unit.
Take the drum unit out of the printer.
They recommend that you place the drum unit on a drop cloth or large piece of disposable paper to avoid spilling and scattering toner.
1. Carefully turn the drum unit upside down.
2. Clean the primary corona wire inside the drum unit by gently sliding the tad from right to left several times. (Be careful with the corona wire they are delicate.)
3. Return the tab to the Home position before reinstalling the drum unit. (If you do not position the tab at the home position, printed pages may have vertical lines.)
4. Re-install the drum unit.
5. Close the top cover.
6. Plug in the power cord.


Hope this helps.
Good Luck.

Apr 09, 2008 | Office Equipment & Supplies

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