doas root:staff

tar -xzvf uld_V1.00.39_01.17.tar.gz

1 install
a) rather
sudo mkdir -pv /usr/local/src/samsung/
sudo mv uld/ /usr/local/src/samsung/

b) than
sudo mkdir -pv /opt/samsung/
sudo mv uld/ /opt/samsung/


2.1 printer
ipp://SEC30CDA7A77B34.local:631/ipp/print
socket://SEC30CDA7A77B34:9100


2.2 scanner — fix (mint 19.1 that is ubuntu 18.04)
cd /usr/lib/x86_64-linux-gnu/sane/
sudo ln -s ../../sane/libsane-smfp.so.1.0.1 libsane-smfp.so.1.0.1 \
&& ln -s libsane-smfp.so.1.0.1 libsane-smfp.so.1 \
&& ln -s libsane-smfp.so.1 libsane-smfp.so