Apple has relaunched the updatings of the drivers for the printing Brother, Samsung, HP for Mac OS X 10.6 Snow Leopard and also 10.7 Lion.
Brother 2.7 Printer Drivers installs the most recent software for printers and scanner Brother (or at least those listed in this document of the Support Apple). The updating asks for Mac OS X 10.6.0 or following, included Lion.
Equally, Samsung Printer Drivers v2.2 for Mac OS X asks for Snow Leopard or Lion, and it includes the software of press Samsung for a big number of models of printers.
Finally, the notes of release of HP Printer Drivers v.2.7 quote only the support for Mac OS X 10.6.1 or following, nevertheless, launching Updating Software I/you/they have been able to unload and to install the update of the driver on my MacBook with installed Lion. Also in this case, the updating includes the last version of the drivers for the printers and scanner HP supported.