Daniel, After a bit of messing around I have the following:
In my home directory I can write to a 0664 file which is in the scanner group I can write to a file with the same permissions in /dev/bus/usb/005, however it does not have the c prefix in the stickybits like the device files do. I am definitely in the scanner group I am definitely in the lp group I cannot print when /dev/bus/usb/005/005 is in the scanner group I can print when /dev/bus/usb/005/005 is in the lp group. I can print when /dev/bus/usb/005/005 is set to chmod a+rwx Confounding I know...by me being in the scanner group, I would have thought this would allow me to write to the device if its sticky bits are set to 0664. This is however not the case. This makes me think that any edit to /etc/udev/rules.d/xx-libsane.rules is simply a workaround. I am thinking the bug is in HPLIP. Thanks ubiquitous1980
