I found that Linux will support a number of older scanners. Not all of them, but many of them.
One solution I found was to install Windows XP in a VMWare virtual session. This allowed me to access an older HP PhotoSmart S20 USB scanner that was last supported in WinXP.
If you need a WinXP installation disk, let me know.
Here's a link to the VMWare Player:https://www.vmware.com/products/workstation-player.html