Hello Catherine how are you? Usually there is an option to have your printer specifically clean the heads. I can look for the configuration for how to do this for you.
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I am sorry to know that you are facing problem with bad quality printout.
Clean the printhead
Use an automated tool from the printer control panel to clean the printhead.
Load plain white paper in the input tray.
From the control panel home screen, touch the Settings icon , and then touch Tools.
Touch the down arrow , and then touch Clean Printhead.
The printer cleans the printhead and then prints a test page.