I have just committed an updated version (113) of the fujitsu backend to our git repo. You can get a current git checkout of sane-backends, or you can wait until tomorrow and download one of our git snapshots: http://www.sane-project.org/source.html
This updated provides initial support for the iX500. So far this is color mode only. I have not yet managed to make the thing scan in binary or gray. Please try it out and let me know if you find any problems with color scans. allan -- "The truth is an offense, but not a sin"
