Warning: Never touch the green metal cylinder (drum unit) Replace the drum unit – this will fix the problem most of the time.Replace the toner if you have a new one spare, it could be defective or running out.Unfortunately, these maintenance parts can’t easily be cleaned but the following steps may help to fix this issue: It also applies pressure so if some part of it is damaged, it can stop the toner from staying on the page. The fuser is a replaceable maintenance part in the printer that melts the toner so it stays on the page. It can also be caused by a damaged or dirty mirror that reflects the laser beam or it can be caused by a damaged fuser unit. If the drum is damaged in any way with a finger print or dirt on it, it can cause sections of the print out to be missing because the dirt is blocking your image from being rolled on to the page. A drum is a replaceable maintenance part of the printer and can either be built into the toner cartridge, or separate from the toner located on top of or underneath it. This drum then rolls the toner onto the paper as it passes. The laser printer works by a laser beam ‘sketching’ the image of what you are printing onto a green metal cylinder called a drum or photoconductor unit. There are a few possible causes of this so you may need to check each in a process of elimination to figure out what’s happening but in most cases, the problem is caused by the drum. Missing areas of print (either always in the same place or not) Remember to be careful and if you are at all unsure, find a printer technician who is experienced in cleaning the printer. Warning: make sure you wear gloves and don’t touch the transfer belt film with your fingers or the hoover, you could leave a mark that will cause additional print problems. If all else fails, you may need to replace the transfer rollers / transfer belt.
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With a lint free cloth very gently wipe the transfer belt (not all printers have one).With a vacuum hoover out any loose toner particles.Get a lint free cloth, rubber gloves (so toner doesn’t get on your hands), some isopropyl alcohol, and a soft paint brush and gently clean any rubber rollers you can easily reach.The following steps will help to fix this issue: If the tracks are located all over the page or even in the middle, it could be due to marks or damage to the transfer belt.Īlso, if a blob of dirt or old toner is stuck to a roller or the transfer belt, it smudges a line down the paper as it passes. This is normally the case when the tracks on the page are located at either end. This happens when the rollers or the transfer belt inside the printer get dirty or covered in excess dirt, ink or toner powder, and as the paper is moved through the printer the ‘tracks’ are being left on the page. Inside the printer the paper is moved along by rubber rollers and in laser printers a piece of film like a conveyor belt (called a transfer belt). Smudges on the page (either always in the same place or not).īlack lines or tracks down either side of the page.Missing areas of print (either always in the same place or not).Black lines or tracks down either side of the page, sometimes in the middle.Here are some of the different printer problems and examples of what they look like: There are several reasons that your printer might be causing black lines or smudges down the page when you print and we’re going to address each one in turn in a process of elimination to help you to fix your problem. What causes black lines or smudges down the printer page?
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If this is happening with your Brother, Canon, HP, Lexmark, Oki or Xerox printer and you’ve had enough then read on…. The image above gives an example of black lines printing down the page.
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