We have recently installed a used Fuji Xerox C240 colour multi function printer in our office which is a Mac only environment. All machines are running mountain lion.
The standard Apple and Fuji drivers are for Postscript only but the printer does not have a postscript kit.
I have also tried downloading Open Source drivers using hpijs and associated pre-requisites rom the OpenPrinting forum but this specific printer is not listed. I have tried a few other printer model drivers from this solution, plus generic PCL but none will print properly or in colour.