Adjust Print Quality : Clean the Print Head

Check the Print Head Nozzles Manually
You can print a nozzle check pattern to check for clogged nozzles manually using the printer software.
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Windows: Right-click the  icon in the bottom right corner of your screen (the taskbar) and select Nozzle Check.
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Macintosh: Open the Applications folder, open the Epson Software folder, open the Epson Printer Utility 4, and click OK. If you have more than one printer, click Printer List and select your product. Then select Nozzle Check.
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Click Print.
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If there are gaps or the pattern is faint, clean the print head manually.