KERNEL=="ls120", GROUP="disk"
# printer devices
-SUBSYSTEM=="printer", KERNEL=="lp*", GROUP="lp"
-SUBSYSTEM=="usb", KERNEL=="lp*", NAME="usb/%k", SYMLINK+="usb%k", GROUP="lp"
-KERNEL=="irlpt*", GROUP="lp"
+SUBSYSTEM=="printer", KERNEL=="lp*", MODE="0660", GROUP="lp"
+SUBSYSTEM=="usb", KERNEL=="lp*", NAME="usb/%k", SYMLINK+="usb%k", MODE="0660", GROUP="lp"
+KERNEL=="irlpt*", MODE="0660", GROUP="lp"
# disk devices
KERNEL=="ht*", GROUP="disk"