Question about Brother MFC-9440CN Laser Printer

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Black streaks on back of paper

When printing, there are black streaks running the length of the paper on the back side.

Posted by Anonymous on

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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  • 1056 Answers

SOURCE: lines on papre

Replace the toner cartridge.
There is probably a flaw in the image drum. Replacing the toner will replace the image drum (they are one piece)

Posted on Aug 19, 2008

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  • 11 Answers

SOURCE: Lines on Paper

Under the drum there is a thin ****-glass. Make sure there is nothing on the glass. Do not use compressed air to remove the debris from the glass. Use a dust cloth or such. Using air will blow the debris into the laser unit and it will have to be taken apart to be cleaned.

Posted on Nov 02, 2008

  • 1 Answer

SOURCE: My drum is at 40%. I have black vertical streaks

I was going crazy! Had a tech come in and look at the machine - needless to say he did NOTHING! A friend came over and was trying different things. It was that the "rack" that the toner cartridges sit in was not fully seated - once he pushed down a little and heard it "click" I had no more black streaks. AMAZING

Posted on Mar 31, 2009

jennifer953
  • 23 Answers

SOURCE: BIG BLACK STREAK ON PAPER

If you're experiencing horizontal streaks, and already tried changing cartridges but that don't help, look in the bottom of the paper tray. If that small metal ground terminal gets ditry or bent, that could be the cause.

Posted on Sep 10, 2009

  • 903 Answers

SOURCE: I have a Brother HL-4040CN

If it's a spotty line, that most likely points to the fuser. Maybe something tore the belt or scratched the roller in there.

Posted on Jun 16, 2011

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1 Answer

How do you clean the print rollers? All my copies have a long vertical smudge/streak that runs entire length of the right side of the sheet (8.5x11 and 11x17).


It might not be the rollers but the image drum. A bad image drum will sometimes cause streaks on print outs. If you look at the right side of the image drum you will probably see a streak that matches what is being left on your paper. Be careful not to touch the image drum as it will cause fingerprint on your printouts! Of course if the image drum is bad it will need replacing and fingerprints won't matter.

Mar 01, 2011 | Ricoh Aficio AP610N Laser Printer

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Black ink streak on left side of paper on hp 1012, just put in new toner


Run a half test.
Put paper in the manual feed tray(tray 1).
Send a print job to printer. When the paper gets 3/4 of the way into the printer, open the cover. Pull out the toner cartridge, look down at the sheet inside the printer. Does it have the streak on the left side? If yes...your toner cartridge is bad. If no...replace the fuser.

Oct 21, 2010 | HP LaserJet 1012 Printer

1 Answer

DARK LINES/SHADES APPEARING ON BACK OF PRINTS


when the print-out shows lines or streaks on the back of the paper when printing single sidedly, this usually means that the fusing unit is dirty or broken. another possible broken part may be the photoconductor unit.

Apr 20, 2010 | Canon iR 2016i Black and White Copier

1 Answer

Streaks on printed page full length even after installing new cartridge


Check the glass (the one the paper rests on). The underside of the glass that is. This is what the light 'sees', so, it will print this! 

Jun 03, 2009 | Konica Minolta PagePro 1350W Laser Printer

1 Answer

Printer prints a black streak down the reverse side


You have a build up of ink inside the printer. I had a Canon that did this. I had to take the ink & print head out, and tear a paper towel strip 1 " wide and 13" long or however long the paper towel is. I folded it in half down the length so it was 1/2x13. Then used a plastic strip to shove it under the part the print head sits in. Once I got the towel to the other side, I grabbed it with my hand. I removed the plastic strip used to shove the paper towel under. So now the paper towel sticks out both sides underneath the print head cradle. I gently pull the paper towel back and forth so the paper towel can clean off the ink build up. Hope this helps.

Mar 29, 2009 | Office Equipment & Supplies

1 Answer

Wide black streak on back of printed paper


Hi,

it is not directly coming from the head. Probably you are printing your photos without borders. This means that the printer prints slightly beyond he paper. As a consequence is sprays ink on the mechanics and after a while it starts to smear on the back of the paper.

This phenomenon is even mentioned in the printer manual (kind of caution when selecting borderless printing).

There is a menu item in the printer utilities that lets you clean the printer mechanics with a folded paper. I tried this, but it helps only little.

I have the same effect on a pixma IP 4500 , and I live with it.

Cheers

Critter


Dec 29, 2008 | Canon PIXMA MP530 All-In-One InkJet...

1 Answer

Black smudges on printed page


Are you sure this is a Designjet 450 (large format printer) and not a Deskjet 450 (portable printer)? The following assumes you have wispy black streaking on the printed side of the paper. If the streaking is on the back side then post more details of the printer model and the issue.

In either case the most likely cause is a buildup of fibers on the underside of the printheads or carriage, causing wisps of black ink to be dragged on the paper when the carriage reverses direction. You can clean the printer as shown at the following (though the details will be somewhat different for the Designjet or Deskjet....).

Regards,
Bob Headrick, MS MVP Printing/Imaging

Sep 16, 2008 | HP DesignJet 450c InkJet Printer

1 Answer

Black streaks on printout


Your fuser is worn out. Needs to be replaced.

Mar 27, 2008 | HP LaserJet 5p Printer

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