Epson Printers Quick-Start for Debian 9 Stretch
The linked Linux Tutorials Shows You Step-by-Step How-to Install Epson Printer Debian 9 Stretch 32/64bit GNU/Linux Desktop.
Especially relevant: before to Install the Driver Check on the Download page if your Epson Model is Included in the specifications.
Otherwise Search this WebSite or the Epson Support site with the initials of the Epson model as e.g. “L300″.