Bob, that was lovely, though not exactly what I had in mind.... Were you using analog or digital separations at that point in the 90's? How long would it take to make a print in this manner? What separation would supply the key? How were the results? How much did you charge? Where do babies come from?
PE, I'd be curious to know where to get such pigments today, but I'm pretty certain PF doesn't have them anymore. Though I wouldn't know because I emailed them along time ago asking this and they never responded. Luis Nadeau lists some DuPont pigments in his book, I don't know if those are still available.
I suppose the melinex support is ideal because a) polyester is completely archival and b) the smooth surface would make for excellent adhesion of the wet carbon glop?