Without a long explination (which I know nothing about) the light source in the scanner is part of the problem, probably missing the UV extended range, so the orange color is invisible to the receptors.

Remember when you could edit blue colored "cold type" paste-ups with a blue pencil and it was invisible to the cameras. (OK maybe you don't?)

Anyone who ever went into a dark room knows that a red light or an AO yellow will not ruin black and white film, so you can see what you are doing. (maybe not, now that we all use digital)

Same with the scanners. They are either not responsive to the spectrum that is needed for the ultraviolet pigments or the light source is lacking in that range.

Either way...

That's the way it is.

I suppose those of you who are lucky enough to have a scanner that does capture the "hot" chip colors and the reds, should write a note and tell the rest of us? My scanner is so old that it uses a SCSI interface to run. It does reds fine, but Arc Yellow comes out kind of peach.

So who wants to be the first on the list of scanners that do the chip colors right?