Comment # 2 on bug 1120385 from Johannes Meixner

We do not develop sane-backends.

Please report upstream issues directly to the SANE project at
http://www.sane-project.org/
http://www.sane-project.org/bugs.html

Ideally provide an URL to your upstream issue report
here as reference.

In general you may have a look at
https://en.opensuse.org/SDB:Configuring_Scanners
therein in particular see the section
"RPM packages of the 'sane-backends' scanner drivers"

openSUSE Leap 15.0 provides sane-backends version 1.0.27
which is the current latest "sane-backends" version
that is officially released by the SANE project
http://www.sane-project.org/