Adjust Print Quality : Clean the Print Head

Clean the Print Head Nozzles
If print quality has declined and the nozzle check pattern indicates clogged nozzles, you can clean the print head.
You cannot clean the print head if an ink cartridge is expended, and may not be able to clean it when a cartridge is low. You must replace the cartridge first.
You can clean the print head using your printer’s control panel or your software. See these sections below:
Using the Control Panel
From the Computer