Question about HP LaserJet 2550L Printer

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Spots on paper

Black dots on print outs

Posted by Anonymous on

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  • Master
  • 673 Answers

Does the pitch of the dots look like it could be caused by the pin wheels on the exit of the paper path?

If so it could be that the wheels have got knocked or sagged and are just touching the print as it exits the machine. Try gently prizing them up out of the way.

Posted on Nov 03, 2012

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Posted on Jan 02, 2017

rickyostrom
  • 270 Answers

SOURCE: Printing with 6 black dots on right side

If the spacing between dots are the same, then you have a dirty or bad roller. If you never had this problem prior to installing the new toner cartridge, then I would suspect you have a bad one. Try a different toner.

Posted on Nov 18, 2008

SOURCE: printer leaves black spots on paper

The black spots mean you either need a new imaging drum, transfer kit or fuser. You'll have to print some stuff and try to catch where the black marks are appearing. Try this method (it's called a Half-self test)

Load 2 -3 sheets of letter paper in tray one (manual feed) and remove paper from the rest of the trays.
From the information menu, request a demo page
The MOMENT the tail end of the paper disappears into the printer, open the right door. Open the front doors and release the levers for the imaging drum and the transfer drum. Carefully remove both pieces and examine your paper.



You should find the paper partway on the transfer belt but not in the fuser. If you see black marks here, start with the imaging drum. Open the shutter that covers the sea green shiny roller and look for marks on the drum (you'll see build up on the edges, that's normal, you should not see any scratches, pockmarks or toner on the center of the drum). If it looks clear, take a look at the transfer drum for marks or cuts on it's surface. (note: the transfer drum can be cleaned off with a dry lint free cloth, do not touch the shiny sea green roller of the image drum)

If everything looks good there, then likely the black marks are coming from the fuser. Let the printer sit, turned off for about half an hour to allow the fuser to cool. You can then remove the fuser and look at the rollers to see if there is any build up or damage there.

If you are not seeing any obvious issues with any of these parts, then start with the imaging drum. If you know that any of these parts have never been changed, then change them as they do have a limit to how many pages and how much time they can be used for.

Posted on Feb 17, 2009

micromend
  • 748 Answers

SOURCE: 4250tn print black spot

You either have a bad spot on the drum or a bad spot on the fuser rollers. Replace the cartridge first. If spot continues, take cartridge out and get inside with a flashlight. You'll probably find a piece of paper stuck to a roller.

Posted on Apr 04, 2009

FixinFax
  • 3085 Answers

SOURCE: while i print a paperon my hp leaserjet 1020 printer i find black spots on paper

It sounds like the toner cartridge is leaking.

Posted on Jun 04, 2009

don_farr
  • 1011 Answers

SOURCE: the yellow spot is blinking and the black dot is

Are you using a factory new ink cartridge?
Please consider the following:
If you are using a refilled or third party cartridge that may well be your problem. Most manufacturers build logic into their products to prevent the use of “Other Equipment Manufactured” cartridges as well as re-filled cartridges.
They do this to prevent problems from contaminated inks causing problems with print quality or damaging the physical printhead.
If you are using factory new cartridges, then please call the manufacturers Technical Support for assistance with the warranty on the cartridges
Don

Posted on Nov 19, 2009

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1 Answer

When printing black dots appear chaotic, over the entire sheet of paper. What to do?


If the black dots appear on every sheet of paper it could be the fuser unit is wearing out or the drum unit. The way to check that is to stop a print half way through and remove the paper. If they are not there before the fuser unit but after it then it will be the fuser. Or if they are there before the fuser unit it will be the drum unit. If it they only appear specfic to one source then it is likely to be the source of the document. IE copying - check the optical area (scan glass etc). If on incoming Faxes it may well be the sender that has the problem and is just transmitting them to you. Hope this helps.

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Canon ir3300 printing black dots on bottom of paper


Dear
A scan copy of the printing and information on paper setting would bet better to understand. however the dots appeared at bottom may cause due to the drum unit corrosion or spots on its surface. Try to clean drum and PCR roller with cotton cloth dampen with isopropyle alcohol. and warm up with rubbing dry cotton on the surface of PCR and drum. Note don't work with direct light or sun light.

Try to clean the transfer roller with soft brush.

Thanks.

Feb 07, 2015 | Canon IR 3300 Digital Copier

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My hp jaserjet 1150 when hitted than printing quality too bad & Black spots on the paper.............


First take half test page. see what about the page if same dots appear replace toner cartridge, the black not come replace the teflon sleeve

Nov 05, 2013 | HP LaserJet 1150 Printer

1 Answer

Consistent dots down print


Try to print clean page ,
Print a cleaning page During the printing process, paper, toner, and dust particles can accumulate inside the printer and can cause print quality issues such as toner specks or spatter, smears, streaks, lines or repeating marks. Follow these steps to clean the printer's paper path.
  1. Load copier-grade paper (not bond, heavy, or rough paper).
  2. On the printer's control panel, touch the Menu button.
  3. Touch Configure Device .
  4. Touch Print Quality .
  5. Touch Process Cleaning Page .
A Cleaning message appears on the printer control panel display while the cleaning is taking place. The cleaning process takes a few minutes to complete. Do not turn the printer off until the cleaning process has finished. A page will be printed when the task is complete. Discard the page. You might need to repeat the cleaning process to thoroughly clean the printer. Print a few more pages to see if the problem is resolved.

Mar 20, 2013 | HP LaserJet 5550DN Printer

1 Answer

Every page has 3 or 4 black dots right down the center. How do I get rid of these?


Are the spots the same on every page?

Start a print from tray 1/manual feed and just as the trailing edge of paper is entering the machine; quickly open it to stop print and take out the cartridge and look at the drum and the paper underneath. If the issue is there at that point then it would point to the cartridge. If not then it is in the fuser area.

If it is the drum area:

Clean the loose toner up with a dry lint free cloth.

If it is the fuser, it may have a bad spot and would need to be replaced.

Jun 28, 2011 | Digital Products Brother HL-2040 Laser...

1 Answer

We have just changed the photoconductor unit on our Epson Aculaser CX11NF printer. When we print or copy, we get coloured spots on the right hand side of the page


Oh-ho! The coloured spots are what is known as "traffic lights". To be sure these are the symptoms: You will have a black spot then a slightly larger gap then the three colours regularly spaced, the pattern will repeat every 150mm or so. If you print a black only page then only the black dot will appear, print with any colours and all four dots will be printed. It is caused by a tiny/slight scratch on the photoconductor (PCU) drum (usually caused by mishandling, a loose or foreign object inside the printer or even trying to print on stapled paper!). Polishing the drum using a very soft dry cloth can often help to get rid of the scratch, but remember to keep it away from any bright light as this will damage the sensitivity of the drum. The traffic lights will be in line with the scratch so concentrate your efforts in that area. Also, while the PCU is out, take a good look inside the printer for any loose or protruding objects, rotate the toner cartridges from above with the front cover closed (opening the front locks the cartridge carousel in position). I sincerely hope this helps as the only other remedy is to replace the PCU with a new one.

Jul 07, 2009 | Office Equipment & Supplies

3 Answers

Four dots middle 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.

Sep 11, 2008 | Brother MFC 7420 All-In-One Laser Printer

1 Answer

Getting spots on photos


I pulled out the cartridge that was causing the spots, dabbed at the small pool of ink that collected with a very soft paper towel, re-cleaned the print heads and that seemed to solve it...

Jul 11, 2008 | Epson Stylus 1400 InkJet Photo Printer

3 Answers

Brother laser printer printout


You need to clean your drum unit:
see http://www.brother-usa.com/FAQs/Solution.aspx?FAQID=100000001044&Sympt=The+print+jobs+have+black+spots+or+black+dots.+How+can+I+improve+the+print+quality%3f&Model=3&ProductGroup=1&Keyword=dot&ProductID=HL2040
Worked for me!!

Dec 19, 2007 | Office Equipment & Supplies

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