I noticed now that trying to print from a web page using either Firefox or Chromium, nothing will print, and nothing shows up in the print queue like it even tried. Okular strangely enough does print with no problem. Libre Office failes printing stating Failed to Start the Device.
I rechecked the configuration and all appears correct and test pages do print normally.
Which driver are you using? Maybe a change of driver will help. I note that there is a gutenprint driver (full and simplified version) as well as Epson proprietary drivers available: ESC/P Driver (full feature), and ESC/P-R Driver (generic driver).
Thanks for the reply and the suggestions. I decided to try one basic thing before diddling any longer with the driver selection. As with WinDOHs, when in doubt, reboot. After rebooting voila, everything printed from all applications normally as expected.
BTW, I am using the R3000 Full Featured driver downloaded from the Linux driver area at Epson. Works perfectly.