HP LaserJet 4SI
How to Identify and Fix Common Problems ?
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Horizontal smearing shows that the ink tank`s bottom is clogged with fibers. If you discover a problem like this, remove the cartridges and begin cleaning them. Your ink cartridges may have dried out or the print heads may have become clogged with ink residue if they are older than a year.
What Causes Smudges When Printing? Black lines and smudges on your document may indicate that your printer is dirty. Dirt, dust, or toner accumulated on the rollers or transfer belt can cause smears and smudges on the paper as it goes through the paper.
The best way to prevent smearing is to make sure you give the ink time to dry before picking up the copy or copies. It doesn`t take long, maybe 10-15 seconds. If that doesn`t work, try changing your printer settings for a lower quality print job. You generally have a choice, Best, Normal or Draft.
When it is not fusing correctly, toner can become smudged on the paper if non-fused toner sticks to the rollers. In the case of a bad drum or leaking toner, it is best to replace the entire toner cartridge. If you suspect a bad fuser is at fault, it is best to have the laser printer serviced at a repair shop.
Laser Printers
The fuser melts the toner onto the paper at temperatures as high as 400 degrees so that it is unlikely to melt off the paper in the future. Laser prints smudge if your printer`s fuser operates at a lower than ideal temperature. Fuser temperatures can frequently be adjusted to solve this problem.
What`s happening is that the drum or rollers could have a fingerprint or dirt that is smudging the toner on the page as it passes through to the fuser. It is normally caused by the rollers. If the marks are always in different places, then it`s most likely to be the drum.
Ink cartridges that have been sitting idle in your machine for more than a couple weeks will eventually dry out. You might be able to bring them back to life by running a cleaning on your machine, but if the pattern continues, you will eventually be placing an order for a set of replacement cartridges.
(smʌdʒ ) verb. If you smudge a substance such as ink, paint, or make-up that has been put on a surface, you make it less neat by touching or rubbing it. […]
Why is it important to clean a laser printer? Printing is vital to all businesses so ensuring your laser printer is thoroughly cleaned is crucial as it allows your machine to continue working efficiently. Cleaning a laser printer is easy with the correct equipment, however they are prone to dust and debris.
Dots are typically caused by foreign material inside the machine (for example paper dust, glue from labels or envelopes, paper clips, staples) sticking to or damaging the surface of the drum. Toner builds up on or sticks to these areas on the drum and creates black dots on the printed pages.
Streaking is usually caused by a worn out drum unit or spent toner cartridge. Drum units are a consumable and only need to be replaced after the use of 3 or 4 toners. Not all printers use a separate toner and drum unit.
If the contacts between the cartridge and the printer are dirty or clogged, there is a high chance that this can be the main cause for the ink to leak on the paper. To properly clean the contacts, open the printing machine and remove the ink cartridges and place them on a clean piece of paper.
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