I was able to get the fujitsu snapscan S1300 running under Mint 13 LTS (64 bit) acceptably. It does duplex, color, and a few different resolutions. ***NOTE*** Works without using root to access the scanner

There are 2 key parts that I had to do:

1) extract firmware file
You will still, of course, have to copy the firmware file, 1300_0C26.nal, to the appropriate location. /home/username/Documents/300_0C26.nal

2) edit /etc/sane.d/epjitsu.conf so that it has the following:

[B]# Fujitsu S1300
firmware /home/username/Documents/300_0C26.nal
usb 0x04c5 0x11ed

Good Luck!