Xsane - Falied to open device error

PROBLEM

Unable to open xsane due to an error:

Failed to open device 'brother3:bus4:dev2' Invalid argument

BACKGROUND

Ubuntu 16.04 (upgraded from Ubuntu14:04)
Printer/scanner:       Brother DCP-J315W

SOLUTION

1. Open /etc/udev/rules.d/60-libsane.rules
2. Add the following 2 lines at the last of the device entry. (just before "# The following rule...")
         # Brother scanners
         ATTRS{idVendor}=="04f9", ENV{libsane_matched}="yes" 
3. Restart the OS.

 NOTE

• idVendor is the same for all Brother printers