Can anyone tell me how to clean the printer head?

Uggh, I just got picture paper for my pics so I can print them out at home buuut..! Everytime I print them out, there are these white lines on it. The instructions says that I have to clean the printer head but when I try to search on the net on how to do so, it usually talks about a DIFFERENT printer than... show more Uggh, I just got picture paper for my pics so I can print them out at home buuut..! Everytime I print them out, there are these white lines on it. The instructions says that I have to clean the printer head but when I try to search on the net on how to do so, it usually talks about a DIFFERENT printer than mines.


Can anyone tell me how to clean the printer head?
By the way, I have an HP OfficeJet 6210 printer.
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