Hi,
I had to update the udev libsanes rules for my HP C5280. I email it
here, as suggested:
# Hewlett-Packard Photosmart C5200 series (C5280 at least)
SYSFS{idVendor}=="03f0", SYSFS{idProduct}=="5d11", MODE="0664",
GROUP="scanner", ENV{libsane_matched}="yes"
Hope this can help others.