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Black dots and print quality

HP Recommended
Microsoft Windows 10 (64-bit)

Hello I run into a problem with my HP Laserjet pro MFP M477fdw, I'm printing documents and small dots appear on the page and after I'm running a clean page it will be Ok but after an hour later of a few it will be the same as before, or after few pages printed out the printing will be just fine and good.

as follows

Regards

2020-08-06_081219.jpg

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Message 2 of 3
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HP Recommended

Hi, thanks for posting. Your picture did not show up initially so I had to revise my suggestions. What you appear to be getting is called background scatter and the first thing to try is a different black cartridge. It is possible that your fuser is not getting to the correct temperature and causing toner to be redeposited, but try a cartridge first.

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I am a volunteer, offering my knowledge to support fellow users, I do not work for HP nor speak for HP.

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I have just changed the cartridges not only the black, all the colors

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