scanner hp 2400

 http://hplipopensource.com/hplip-web/install/install/index.html

TM253e /etc/init.d $ scanimage -L
device `genesys:libusb:002:032' is a Hewlett Packard ScanJet 2400c flatbed scanner

TM253e /etc/init.d $ xsane

http://movingtofreedom.org/2009/02/26/yes-your-hp-scanjet-2400-might-work-in-ubuntu-and-maybe-even-other-flavors-of-gnulinux/