First of all connect the scanner to pc with usb. Then go http://www.avasys.jp/lx-bin2/linux_e/scan/DL2.do
download and install under data package
deb package
iscan-data_1.13.0-1_all.deb
then download and install under core package
deb 64bit package [libltdl7] (for Ubuntu 8.10 or later)
iscan_2.28.1-3.ltdl7_amd64.deb
iscan-plugin-gt-f670_2.1.2-1_amd64.deb
Image Scan! for linux is ready to use on Linux Mint 13 Maya...
*This is for 64 bit OS

