I've successfully detected WiFi on two debian distros - Point Linux & Linux Mint LMDE.
cd /etc/sane.d/
nano xerox_mfp.conf
Edit #Samsung C460 Series
# usb 0x04e8 0x3468
tcp 192.168.1.xxx # IP address of Samsung Printer at the moment - obtained either from your router or a printout of the SL-C460W information from the printer itself.
Don't know if the usb needs commenting out but I'm not using it so decided to play safe.
Didn't need to make any other changes.
cd /etc/sane.d/
nano xerox_mfp.conf
Edit #Samsung C460 Series
# usb 0x04e8 0x3468
tcp 192.168.1.xxx # IP address of Samsung Printer at the moment - obtained either from your router or a printout of the SL-C460W information from the printer itself.
Don't know if the usb needs commenting out but I'm not using it so decided to play safe.
Didn't need to make any other changes.