Printer/driver compatibility OSX 10.5.8

I have both an iBook G4 and an iMac G5 desktop. Both are running OSX 10.5.8; the terminal OSX for PPC Macs. My Canon PIXMA MP560 went belly up last week. Like almost everything, a repair is at least as expensive as a replacement. BUT, the Canon I brought home as a replacement (PIXMA MX922) requires OSX 10.6.8. My questions are these:

Is there a driver workaround for this, that would let me access the features of the printer?

What Apple drivers might there be that can be used, and how limited are they?

Failing both of those, what current printers are still OSX 10.5.8 compatible?

Thx!