If you still see white or dark lines or missing colors in your printouts, even after cleaning the print head several times, you can flush the ink tubes.
Flushing the ink tubes replaces all the ink inside the tubes, so flush the ink only if your cannot improve print quality by cleaning the print head several times.
Flushing the ink tubes effects the service life of the ink pads by causing them to reach their capacity sooner. Contact Epson to purchase replacement ink pads before they reach the end of their service life. When the ink pads reach the end of their service life, the product stops printing and you must contact Epson for support.