Canon USA, Consumer Products - Download Library for S630: "630 Printer Driver v1.7.0 for Macintosh OS X v10.1 or later
Once the file has UnStuffed, double-click 'S630_OSX_v170' to begin installation. Borderless printing is supported for Mac OS X v10.2 (Jaguar) or later. This printer driver is compatible with the iMac, G3 & G4 series computers that can run Macintosh OS X and are equipped built-in USB ports. Installation instructions are not included."