How does the self-cleaning function on HP Deskjet printers actually work?They pick up the excess ink when you have completed a print job, or when you have completed a cleaning. A print head cleaning works by heating the print head and expelling a small amount of ink and any debris that may be causing a blockage. You should run a print head cleaning every two - three weeks. Intermediate clean and priming the printer are not necessary if you do a basic cleaning. INtermediate clean and prime work just like a basic cleaning, the biggest difference is going to be the ink volume expelled.
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