opi-scanner

sudo apt intall sane-utils
# add user to scanner group. Logout after this command
sudo adduser zero scanner
# find scanner ids
lsusb
# copy and modify udev example file to udev folder
sudo cp udev-example/55-libsane.rules /etc/udev/rules.d/
# restart udev service, than unplug and replug scanner
sudo service udev restart
# now this should run without sudo
scanimage -L

Scanner button

sudo apt install scanbd
# create script directory
sudo mkdir /etc/scanbd/scripts
# copy script 
sudo cp scannerbutton.sh /etc/scanbd/scripts/
# backup original plustek config
sudo mv /etc/scanbd/scanner.d/plustek.conf /etc/scanbd/scanner.d/plustek.conf.orig
# copy modified plustek.conf
sudo cp scanner.d/plustek.conf /etc/scanbd/scanner.d/
# restart scanbd
sudo service scanbd restart

Scanning

scanimage -x 210 -y 297 --format=png --resolution  150 > /media/miniretek/scanner/scan-`date +%F-%H%M`.png

Acknoledgements

scannerbutton.sh based on the script found here: https://www.linux.com/news/how-configure-scanners-buttons-linux/