There is no specific information on whether the scanner works directly on a Samba share with SMB v3.1.1. The available data describes connectivity via USB, USB host and WLAN, as well as functions such as scan-to-USB stick and scan-to-cloud, but no explicit support for SMB versions or Samba shares.

It is therefore not certain whether the scanner supports SMB v3.1.1. For a definitive answer, we recommend contacting Epson directly or checking the official documentation.