How to fix streaking and lines on a laser color printer

Written by bonnie conrad
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How to fix streaking and lines on a laser color printer
Resolving your own laser printer issues can save you money. (writing image by DBarby from

Colour laser printer can produce high quality full colour output at high speeds, but these printers are also prone to their share of problems. Since the cost of professional service on laser printers in general, and colour laser printers in particular, is so high, it is a good idea for anyone who owns one of these printers to learn some basic troubleshooting skills. Knowing the most likely cause of common problems such as lines and streaking on the finished pages makes it easier to troubleshoot and resolve problems quickly, without calling an expensive printer repair service.

Skill level:

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Things you need

  • Printer
  • Paper
  • Small vacuum cleaner
  • Soft cloth
  • Toner cartridges

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  1. 1

    Power on the printer and open the toner cartridge cover. Lift the first toner cartridge out and set it aside.

  2. 2

    Use the vacuum cleaner to remove toner residue from under the toner cartridge. This residue tends to accumulate under the cartridge, and it can cause streaks, lines and uneven colouration as the paper moves through the paper path.

  3. 3

    Clean the area thoroughly with a soft cloth to remove any remaining paper dust and toner residue. Make sure the area is completely clean before moving on to the next area.

  4. 4

    Rotate the toner cartridge carrier to the left and remove the next cartridge. The exact procedure for rotating the cartridge carrier varies from model to model, so consult your owner's manual. Many colour printers use a button on the menu to advance each toner cartridge.

  5. 5

    Clean the area under each remaining toner cartridge thoroughly, using first the vacuum cleaner and then the cloth. Continue cleaning the interior of the printer until no more toner residue is found.

  6. 6

    Wipe each toner cartridge thoroughly before putting it back in the printer. Toner residue and paper dust tend to accumulate on top of the cartridge, and that residue will find its way on to the printouts. Replace any toner cartridges that appear to be leaking. A leaking toner cartridge can contaminate the entire paper path, and this problem is very difficult to resolve without a professional service technician.

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