My Bravo 4100 series Disc Publisher or Auto Printer only prints one disc at a time when I print directly from my design program. (Bravo 4100 Series - Mac Only)
When using Mac OS 10.7 or higher you must print using PTPublisher for Mac to print more than one disc at a time. PTPublisher accepts universal formats including JPG, BMP and TIF as well as Disc Cover files.
You can download PTPublisher for Mac free here!