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I have the canon np2020. We have replaced the drum unit, but the printed paper still comes out with black smudges all over it. What can the problem be?

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Any time u are changing drum try and replace the cleaning blade, remove the drum unit remove the drum, the blade, blow the unit with air blower, check the copy lamp and the lamp regulating board

Posted on Aug 26, 2010

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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

Paper stuck under the print head container


pls clean ur drum with tissue paper or soft cloth and then try once
even after if the same thing happens change the drum or catridge

Sep 07, 2009 | Canon PIXMA MP830 All-In-One InkJet...

1 Answer

Error code: color registration error and ultra-light, smudged printing on right side of paper


have you replaced all of the consumables?
drums X2 black and color
developer units X4 CMYK
transfer imaging belt X1
Fuser unit X1
if the unit has over 60k prints it will need to have these items replaced and once that is done the color registration will come back inline.

Jul 28, 2009 | Ricoh Aficio CL3500N Laser Printer

1 Answer

Black lines or smudge marks\running down the prints


Hello sir;The streak line from printing also should be from copy, because the line come from imaging unit, check the meter count if close to or over 50,000 then replace drum and drum blade, it will take care the problem.
The brother printer you need to replace imaging unit( drum unit).

Jun 01, 2009 | Brother Office Equipment & Supplies

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

Black mark on printed copies


Remove the black drum and see if see the line on the drum that you see on the paper---if it is replace the drum unit.. Good Luck

Aug 26, 2008 | Ricoh CL4000DN Laser Printer

2 Answers

Black smudges on copies


Hi, try to pull out complete process unit(cartridge) with toner box .You have cleaner(blue or green color) move this cleaner from right to left side 4 or 5 times.Note that cleaner MUST be in home position-right side when you finish.Check print.
If problem still persists, you must do following:take away small grey plastic cap on left side of cartridge,then push complete charge corona(part with cleaner on top of it) to left side just enough to lift right side of corona from cartridge.Pull out that corona and you can see drum and developer roller. Turn the gear on drum,and look for smudges on black developer roller.Try to clean smudges with brush or with dry cloth.Toner will again attract to that area,but regular.

Dec 11, 2007 | Kyocera Mita KM-1815 All-In-One Laser...

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