I noticed they said "for printing on reversal papers" as well in the documentation.
That data sheet was issued in 2000 - thirteen years ago. Back then there WERE reversal Colour papers. Printing commercially these days is generally by methods we don't think about on APUG, and Positive or Negative is just the flip of a button.
Charles MacDonald firstname.lastname@example.org
I still live just beyond the fringe in Stittsville