I've managed to get sane/xsane working with my Canon LiDE 60.
I did this by compiling the experimental CVS genesys
backend (including Pierre's recent support for the LiDE35/40/50).
Before compilation I replaced every instance of the LiDE 35
USB ID (0x2213) with the USB ID for the LiDE 60 (0x221c).
I wrote an email asking for CX3500
support to be added to SANE, only
to realise it has the same USB ID
as the CX3650, which was added to
SANE on 2005-04-26. I guess that means
SANE now supports the CX3500 'out
of the box'?
In that case could someone please
add the CX3500 to the list of supported