We contacted the Mutoh Sales Office in Southern California and found that
the IP-500 emulates an HP-7580. All they had to say about the IP-530 was
that it is HPGL-compatible. It doesn't emulate any specific plotter. The
folks at Microspot (MacPlot driver) would not guarantee that the Mutoh
plotters would work with their product, because they haven't been tested.
They stated that there should be no problem driving any HPGL-compatible
plotter.