I have a new Epson AcuLaser M1400 laser printer and I can't print from Linux (my system is Ubuntu 12.04 LTS.) The Aculaser M1200 can use the use the EPL6200L driver from http://www.avasys.jp/lx-bin2/linux_e/laser/DL1.do. And the M1400?
There's no official driver for M1400, and I haven't found an unofficial yet. Only for Windows. I have the same problem, bought an M1400 so have to use Windows. I have tried several Epson drivers without any results... :(