After you download Canon_UFRII_Linux_V1.90_[your country code here].tar.gz, untar it.
That will create a directory: Canon_UFRII_Linux_V1.90_IT/
denever@tuscio:~/tmp/src$ cd Canon_UFRII_Linux_V1.90_IT/
denever@tuscio:~/tmp/src/Canon_UFRII_Linux_V1.90_IT$ cd 64-bit_Driver/
denever@tuscio:~/tmp/src/Canon_UFRII_Linux_V1.90_IT/64-bit_Driver$ cd RPM/
denever@tuscio:~/tmp/src/Canon_UFRII_Linux_V1.90_IT/64-bit_Driver/RPM$
In this directory you will have two rpm:
denever@tuscio:~/tmp/src/Canon_UFRII_Linux_V1.90_IT/64-bit_Driver/RPM$ ls
cndrvcups-common-1.90-1.x86_64.rpm cndrvcups-ufr2-uk-1.90-1.x86_64.rpm
Now you have to convert these two rpm in two debian package (.deb).
To do this you will need alien program installed.
sudo apt-get install alien
After you installed alien you can convert the two rpm:
alien cndrvcups-common-1.90-1.x86_64.rpm
alien cndrvcups-ufr2-uk-1.90-1.x86_64.rpm
After that you have to install ia32-libs.
This package is really important for the right use of the driver:
sudo apt-get install ia32-libs
And now you can install the two debs:
sudo dpkg -i cndrvcups-common_1.90-1_amd64.deb
sudo dpkg -i cndrvcups-ufr2-uk_1.90-1_amd64.deb