Updated instructions for Trusty / 14.04 in addition to comment #18:
1. Download
http://epsonepl.cvs.sourceforge.net/viewvc/epsonepl/epsoneplijs/?view=tar
2-6. as in comment #18 above
7. Restart CUPS (I missed 'service' in #18)
sudo service cups restart
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My 5900L works in 14.04 after that.
Instructions for getting the following Epson printer models working:
Epson EPL-5700L
Epson EPL-5800L
Epson EPL-5900L
Epson EPL-6100L
Epson EPL-6200L
(Based on http://ubuntuforums.org/showthread.php?t=1558950 )
1. Download
http://sourceforge.net/projects/epsonepl/files/epsonepl/0.4.1/epsoneplijs-