I took a slight diversion from what I was doing, and saw this solution for another scanner…
sudo add-apt-repository ppa:sane-project/sane-release
sudo apt-get update
sudo apt install libsane-commonI did the last 2 and a popup said something like “HP 4500 added” after I plugged the scanner in. Xsane still failed but seemed to try. However Simple-scan (called Document scanner in the menu) scanned a image. It took a long time to start the output defaulted to PDF but output format can be changed.