Currently Being ModeratedJan 29, 2013 11:00 AM (in response to and.bag)
The Canon web site says they do not ahve any drivers for that model that run under 10.4.11.
If you can upgrade the OS to 10.5.8 (you need a 1Ghz imac to faster to do this), they still have drivers for the MX435.
Printer companies are rapidly abandoning older Mac OS versions, so you must carefully study the specs. See if you can return the printer and research for one that supports 10.4. It's much harder to find support for multi-functions than print-only devices. Canon has 10.4 drivers for many print-only models. I recently helped a friend who needed a printer for a 1998-vintage PowerBook running 10.3.9. We settled on print-only and I found the proper drivers on the Canon site. However, I found the driers BEFORE I told my friend to buy a specific model.