Apple has released updated printer drivers for various Canon, Fuji and Lexmark printers. You can download them via the Software Updates component of the Mac OS X Systems Preferences app.
By default, Mac OS X v10.6 Snow Leopard installs software supporting the printers currently used by your Mac (if available), nearby printers on your network, and popular printer and scanner models. You can learn more about the latest printer updates at http://support.apple.com/kb/HT3669 .
