Apple delivers third-pary software for scanners and printers via Software Update. Simply connect the printer or scanner to the Mac. If software is needed and available then OS X will automatically downloaded and it is installed in it.
This article is a comprehensive list of currently supported printer and scanner models andit is associated with software provided by third-party vendors as of 28 June 2012.
OS X Mountain Lion
Mac OS X 10.6.1 or later
OS X Lion or later
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Download the Drivers Below
Canon Inkjet Printer Drivers v2.12 for OS X