====== Epson V500 Scanner ======

Download the driver package from here:\\
http://support.epson.net/linux/en/iscan.php?model=gt-x770&version=2.30.4
<code>
wget http://support.epson.net/linux/en/iscan.php?model=gt-x770&version=2.30.4
tar -xvzf iscan-gt-x770-bundle-2.30.4.x64.deb.tar.gz
cd iscan-gt-x770-bundle-2.30.4.x64.deb
sudo ./install.sh
</code>

The following may be required on Ubuntu based system (rather than Debian) to move the scanner drivers in the correct directory
<code>
sudo cp /usr/lib/sane/* /usr/lib/x86_64-linux-gnu/sane/
sudo cp /usr/lib/x86_64-linux-gnu/sane/* /usr/lib/sane/
</code>

iscan needs to be started as root:
<code>
sudo iscan
</code>

To let users access the device which changes bus and device each time it is started, add a udev rule based on the manufacturer and device code. It's the ID 04b8:0130 but where 04b8 is EPSON and 0130 the particular model.
<code>
lsusb
</code>

Also add yourself to the saned and scanner groups (replace username with the actual username):
<code>
sudo adduser username saned
sudo adduser username scanner 
</code>

Now add the following to /etc/udev/rules.d/80-scanner.rules
<code - 80-scanner.rules>
# change device EPSON owner group
ATTRS{manufacturer}=="EPSON", DRIVERS=="usb", SUBSYSTEMS=="usb", ATTRS{idVendor}=="04b8", ATTRS{idProduct}=="0130", GROUP="scanner"
</code>
Reload udev rules:
<code>
sudo udevadm control --reload
</code>
And test the rules replacing the bus and device number from lsusb output. This should print group id 0 in the first line, then the group id of the scanner group in the second line.
<code>
sudo udevadm test $(udevadm info -q path -n /dev/bus/usb/<bus>/<device>) 2>&1 | grep -i group --color
</code>

Disconnect the scanner and reconnect it, then try using iscan or other scanning applications.