umm, pls try and not double post. Your issue as not changed but I will try to help.
bad news I do not have your hardware or distro, but I used to have an epson and am experienced at using cups.
1) I know from the other post you have been desperate to fix this yourself and so have attempted a number of drivers.
Lets start with a clean setup....so cups gets only one choice.
I am not sure if you use sudo or can use su to get to root powers but I would like you to open a shell and try either
su....and if asked for passwd do not try the others....input passwd and jump to cups section
(or if above fails try)
su- (su no gaps hypen) and if asked for passwd...do it and jump to cups section
(or last one is)
sudo firefox (and if asked put in your NORMAL passwd) (or the name of your web browser)
2) if none of them worked you may need to read how to add yourself to sudoers
3) cups section
Note you can run cups as a normal user.
to get into cups open a web browser with root powers or sudo power.
at the address bar type.
If you do not see the cups page.....your network or firewall has an error. pls advise if you have error.
4) click on printers tab and delete all printers....to clean up
5) then click on ADMIN tab and click add printers...and according to this site
gutenprint is your correct driver...but there are often diff language versions.
6) if that fails you could try downloading the driver in the above link but its an rpm file and you may need a application like alien to install it.