For openSUSE 15.6 Update run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:enzokiel/openSUSE_15.6_Update/home:enzokiel.repo
zypper refresh
zypper install epson-inkjet-printer-escpr
For openSUSE 15.5 Update run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:enzokiel/openSUSE_15.5_Update/home:enzokiel.repo
zypper refresh
zypper install epson-inkjet-printer-escpr
For openSUSE 15.4 Update run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:enzokiel/openSUSE_15.4_Update/home:enzokiel.repo
zypper refresh
zypper install epson-inkjet-printer-escpr