My HP PCS 1610 combo scanner, printer, copier did not work until I added:
# Hewlett-Packard PSC 1610
ATTRS{idVendor}=="03f0", ATTRS{idProduct}=="4811", MODE="0664",
GROUP="scanner", ENV{libsane_matched}="yes"
to my /etc/udev/rules.d/z60_libsane.rules
Thank you,
Samuel