When did you first setup this printer??
You may need to reinstall it, the newer versions of macOS like the one you have are a bit different than previous versions so let me check out Epson's website real quick and I'll get right back to you
This link should help you reinstall the printer; when did you update your system to macOS 10.12.1?
The link should be directly to your printer, otherwise just enter the model name and number into the search bar and it will pop right up. On my machine it self-detects my operating system (macOS 10.12.1), then I clicked the Drivers section and it will display the instructions of what to do there
Go ahead and let me know what happens, I will stay on
Sorry, I was briefly disconnected