ok voilà ce que j'ai pour le scaner
dpkg -l | grep sane
ii libsane:amd64 1.0.29-0ubuntu5.2 amd64 API library for scanners
ii libsane-common 1.0.29-0ubuntu5.2 all API library for scanners -- documentation and support files
ii libsane-hpaio:amd64 3.20.3+dfsg0-2 amd64 HP SANE backend for multi-function peripherals
ii libsane1:amd64 1.0.29-0ubuntu5.2 amd64 API library for scanners [transitional package]
ii sane-utils 1.0.29-0ubuntu5.2 amd64 API library for scanners -- utilities