Hello and thanks for your question. I look forward to assisting you today with the best answer possible.
Do you get any error message while trying to print?
This error is always related to the printhead because the printhead is the part of the printer which puts ink onto the paper from the ink cartridges.
As of first step we will try cleaning the printhead.
I will give you a video manual which will help you to clean your printhead.
Please click this link to access the video manual: http://www.epson.com/cgi-bin/Store/Video-Library/video/Printers-All-in-Ones_Product-Lines_WorkForce/How-to-Clean-a-Print-Head/929694625001?UseCookie=yes
Please let me know if it doesn't helps, I will suggest you manual cleaning.
Take a paper towel and fold it into 4 turns and make it little thick. Then add little rubbing alcohol to it and then place it in the path of the printhead carriage. Then move the printhead carriage over it a few times.
Please follow this link to see a video : http://www.youtube.com/watch?v=yrAqXjX10xs
Tell me if it makes any difference to your problem.