Question about Konica Minolta bizhub C450P Laser Printer

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When i print some copy then some side black dots, please advice for remove black dots

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There may be problem of Drum, Check it and also clean optics.

Posted on Dec 28, 2013

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Check the heater unit (fusing unit). Change thermal roll in fusing unit.

Posted on Dec 28, 2013

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Related Questions:

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.

Sep 09, 2015 | Canon iRC2380i

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I have a Brother MFC 8460N that prints three black dots down the right side of each page when going through the printer. I have tried cleaning and it does not work. The black dots show up on copies as...


Measure the distance between the dots and that will give you the answer to which roller is causing the problem I believe the Drum is the only roller large enough to just cause three dots.

Aug 28, 2013 | Brother MFC-8460N All-In-One Printer

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I have an IR2200. At the top of the page, there are black dots. There are 3 lof them and they are about 1 in apart. Could someone please tell me how to fix this myself with out calling for service?...


Hi,
try to print something out.If the dots arent on the printed page, that means that you need to clean the optics ( beneath copy glass ).

If you are not able to print, open front cover, realese the blue handle for duplex, release the handle for toner station, unscrew one screw on front of drum unit, remove drum unit and check for dots on drum surface, or for damadges on charge roller ( the black/grey roller on top of drum ).

Its probably drum unit fault, but it also can be fixing film in steak.

hope that helped

Aug 02, 2010 | Canon imageRUNNER 2200

1 Answer

DOTS pattern and WHITE LINE along the page


The Problem is your Copy Print Module it has a scracht on it if you replace the module it will desapear the dots and lines.

Nov 26, 2009 | Xerox DocuColor 12 Printer

1 Answer

4 colour dots on printout but not 150mm apart


Measure the distance between two of the same coloured dots down the page, if it is just over 150mm then it is caused by scratches on the photoconductor drum (this is the only thing that has a 15.4mm circumference). Try printing a black and white only document, only the black dots should appear. Removing the photoconductor and gently polishing the blue drum with a soft cloth can help if the scratches are not too deep, otherwise a new photoconductor is the only route.

Sep 06, 2009 | Epson Aculaser C1100 Printer

1 Answer

When printing the sheet of paper has 3 dots on the


Yes this could be the drum.

You could remove the drum and carefully look for the pattern of dots etc that you are getting on the page but on the drum surface.

I would suggest replacing the drum 1st and retrying.

If the black lines are just down one edge then the fuser could be to blame for the black marks but without being able to see the page i cant tell. The drum is certainly my 1st suspect and is easy for you to try.

If you are in Berkshire try www.repairmyprinter.co.uk for additional help

Aug 24, 2009 | HP LaserJet 2840 All-In-One Printer

1 Answer

Dots along left side of page on all copies


Do they look like smudges? I had the same problem with my Dell. I replaced the drum and it fixed the problem. Its not a cheap solution, but I was able to print pictures again.

Dec 18, 2008 | Dell 3000cn Laser Printer

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

Epson 9800 Prints black dotted vertical line


This is a workaround - I too need a definitive answer. Symptom: black dotted vertical line 1/2 to 3/4" from leftmost image edge. I have begun adding single vertical line to my prints .25" from the left edge of the paper to force the "dots" off my print - this seems to have the desired affect, but it does not answer the cause or provide a true remedy (it will save many of your prints while we wait for complete solution). dkh

Apr 18, 2008 | Epson Stylus Pro 9800 InkJet Printer

1 Answer

Coloured dots


Maintenance - BTR Adj - Plain 1 - 5 to 8

Feb 15, 2008 | Dell 3000cn Laser Printer

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