print blurry black characters in a few lines

Hi, my printer prints the Photosmart HP 5510 in some no lines no clear characters. There is a black cartridge HP original, just renewed yesterday.

I already clean the print head and I printed out a page on which the black Ray was at the centre of a wave of color.

The printer is connected to a home network wireless and worked fine until a few weeks ago.

Help!

In the end, we will have a new all-in-one printer HP Photosmart 6520. The print head had a problem

Tags: HP Printers

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