The drivers comes with a command-line program that processes the input postscript(?) data into a proprietary image format the printer understands. This program

The drivers comes with a command-line program that processes the input postscript(?) data into a proprietary image format the printer understands. This program is a native Mach-O executable that cannot run under Linux (without Darling or whatever). (It’s called “RicohAficioSPC231SFFilter”.)