Question about Brother HL 5250DN Laser Printer

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Have black smudge line in middle of paper have new toner and drum

Have black smudge line down middle of paper put new toner and drum unit in

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Try taking out your toners, and on the drum you will see a green button which you can slide from side to side (it's on each of the colored slots). Make sure you put the the white plastic cover up and then it will slide. I hope this will help you.

Posted on Jul 27, 2009

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1 Answer

Printer leaving black smudges and streaks


Could be bad cartridge leaking. Drum is in the cartridge and if the drum wiper is not doing a clean wipe toner will drop onto paper. Take out cartridge and over a sheet of white paper tap the cartridge with you hand, if toner drops you have a leaking cartridge. Also could be fuser area, they get dirty and leave lines or the teflon coating wears through and leaves a line, depending how old this unit is.

Aug 18, 2014 | Samsung CLX-3175FN Color Laser All-in-One...

1 Answer

Black lines going straight across paper. 1 every inch down


If the streaks are narrow black and run the entire length of the page, replace the soft plastic wiper blade on the drum (and hope the drum is not scratched). Black smudges are related to the toner/developer purity. Replace both.

Jul 06, 2011 | Canon PC981 Copier

1 Answer

What causes my copier pages to have black smudges on them.


Black smudges are usually caused by a defective or worn out drum. When the drum gets a fingerpirnt, any kind of oil, or anything else that causes the static charge to not hold the toner to the paper, the toner will not go where it is supposed to in order to create the image on the paper and it will cause smudges, streaks or lines.

Jan 31, 2011 | Canon imageCLASS D661 Digital Printer

3 Answers

Black smudges down left side of page


How do I clean white or black spots on printed documents? Description: First make 10 to 15 copies of a blank, white sheet of paper.
If you still see the spots on printed documents after making multiple copies, clean the drum unit as follows:

  1. Remove the drum unit and toner cartridge assembly, and then remove the toner cartridge from the drum unit.
  2. Position the print sample in front of the drum unit so you will know the exact position on the drum that is causing the poor print.
  3. all-ug-19.gif
  4. Turn the black gear on the drum as you check the surface of the OPC drum.
    The OPC drum is photosensitive so do not touch it with your fingers.
  5. all-ug-20.gif
  6. When you find the substance on the drum surface that matches the print sample, gently dab the surface of the OPC drum with a cotton swab that is lightly dampened with isopropyl alcohol.
  7. Note
      • Do not use a scrubbing or wiping motion because this might damage the drum.
        all-ug-21.gif
      • Do not try to clean the surface of the OPC drum with a sharp object, such as a ball-point pen, because this might cause permanent damage to the drum unit.
  8. If the print quality still has not improved you need to install a new drum.

Dec 02, 2010 | Samsung ML 2010 Laser Printer

2 Answers

Prints are having black lines and smudges along the sides of the paper. What do i need to clean?


Unfortunately when it comes to toners and drums there isn't much that can be fixed with cleaning. It sounds like either your toner cartridge is worn or defective and spilling toner, or your drum could need replacing and therefore is acting up. To check if it's the drum, pull out the drum unit and look at the drum roller (but don't touch it!) you should see streaks or color changes on the roller in places matching where the smudges on the paper are if the drum needs to be replaced.

My bet is on the drum. Drum units are fairly easy to get a hold of, since it is a "replaceable" part of the printer. And if you can install the toner you should do fine with the drum unit as well.

Hope this helps, good luck!

Aug 18, 2010 | Canon imageRUNNER 1023iF Black and White...

1 Answer

Prints with a black stripe down the middle, what is the problem?


Please check the following points:
  • Clean the primary corona wire of the drum
  • Make sure the primary corona wire cleaner is at the home position.Use this link for instructions how.
  • The toner cartridge may be damaged. Put in a new toner cartridge unit. Here's a link to how to change toner
  • The drum unit may be damaged. Put in a new drum unit. Here's a link to how to change drum
  • The fuser unit may be smudged. Call your dealer or Brother Customer Service.

Oct 11, 2009 | Brother HL-2040 Laser Printer

2 Answers

Black line, 4-5 mm thick, down the page on printing, off centre


ok, both of those solutions are totally bogus....first, the quality issue...i build about 25 of these cartridges a week, and it sounds like you should check the life of the drum unit, if you haven't cleaned the corona wire already. ( refer to the printer documentation) Brother uses a seperate drum unit that will wear out after 12,000 pages, not the pickup roller. So if you have replaced more than 4 toner carts, it is likely, depending on your usage, that the drum unit is worn. Take out the whole toner/drum unit, remove the toner cart by pressing on the lever on the left front of the assembly and pull up and out. Now you should have two pieces. Look into the larger piece, and if you see excessive wear on the drum, it needs to be replaced. The jamming is a different issue, though....let me know if you need more info....don't buy a new printer yet!!!

Jun 11, 2009 | Brother MFC-7420 Laser Printer

1 Answer

Light lines down middle when printing black


try to clean the class of the machine, if its still there, this means the black drum is scratched since its fine with other colors, to test it very good open the document feeder(put it up) and hit start buttom(without putting anypaper on class), black paper will come out, check if the line there, if yeah, change the black drum.
let me know wat happen Regards

Apr 24, 2009 | Samsung CLX 3160fn All-In-One Printer

1 Answer

MY brother HL-5140 quits printing,and also has a black vertical line down the page before it quits. After a while, say 30 to 45 minutes, it will start printing again. But there are black smudges on the...


Sounds like a fusing error ... If your able to wipe the toner off the page its a fuser unit problem (replace fuser unit) If toner is sticking to paper but the print quality is poor , replace the drum unit  (PCU)  good luck

Feb 21, 2009 | Brother HL 5140 Laser Printer

1 Answer

HP Laserject Printer/Copier


first u must diagnostic the problem to see if the problem from the drum unit or the fusser unit by stop the printer in the middle of print and remove the paper then u can see if the smudge appear it well be from the toner if not then the fusser faulty

Mar 26, 2008 | HP LaserJet 1200 Printer

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