Comment 7 for bug 207798

I've found a possible workaround in debian bug tracker. It is dealing with a similar issue (canon ip1500). The debian package you've posted was converted from a rpm one, using alien. Alien picked up the dependencies that where present on the system, the package was initially created (e.g. gutsy), therefore it depends on libglib1.2 and not on libglib1.2ldbl, which is now the name of the library. To get it work, download the driver from canon website and convert the package using alien on your hardy-install (with all needed dependencies already installed).
see:
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=434264#20