Question about HP Office Equipment & Supplies
Am I right when I say that this mostly happens when printing in black? If so, there seems to be a lot of dust under the carriage and printheads. This has to be removed physically, cannot be fixed by running the cleaning program in the printer driver. If you open the lid the carriage should come out to the middle. If so, please pull the printer's power cable from the wall and wait until all lights are out on the printer.
Proceed to remove the printheads from the carriage, and use a lint-free cloth wetted with clean and luke warm water (it should NOT drip!) to clean the underside of the carriage, all the way round. Also clean the printheads, avoiding to touch the silver/golden colored chip in the middle, where the ink is ejected. My qualified guess is that you'll wipe off a lot of dirt from these areas.
Also, there's a small grey/transparent plastic strip in the back of the printer, called an encoder strip. This also gets dirty and needs to be cleaned. You should use the same type cloth for this, just make sure that no water can drip into your printer.
When you look lcosely, you'll see that this encoder strip is firmly attached in one side of the printer (usually the right side), and attached to a blade spring on the left side. Now you should carefully pull the rag over both sides of the strip TOWARDS THE SPRING, pulling the other way will most likely make the strip jump off and hang loose in the printer - not supported... :) You'll probably be amazed how much dirt this printer has accumulated over teh years.
When all is clean, insert the printheads again and power up the printer. When closing the lid, the printer should go back to normal duty. And, as a bonus, your printer will most likely be a little more quiet, less slamming noises than it had before you started.
Hope this solves your problem.
Posted on Mar 08, 2009
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Posted on Jan 02, 2017
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