Good question - good answer. Thanks.
Sorry for so long,was snowed out.I will try that,the stuff I was using is messy,called DecoColor,its like a liquid and a pain,thanks,Bob.To not answer Fat's question,I'm thinking its wave-lengths that matter???????Happy St Pats all,started at 630AM today because of a pretty cool dream,was playing poker with Martin Scorcese and another guy,adieu.
"Black" means that light in the visual wavelength range is absorbed (None reflected). However, at the wavelength of the CDP laser the disc must be reflective.
By the way, the laser light striking the CD is always reflected. However, the "pits" in the CD surface are 1/4 wavelength deep so that the light reflected from the bottom of the pit is out of phase with the light reflected from the CD surface, and cancels so that it looks like no light is reflected.
I did compare other black cdrs with the ProDisc that I got from RealityCheck and preferred the ProDiscs. Recently, however, on the strong recommendation of others I have decided to buy Mitsui/MAM-A 80m Gold Thermal cdrs, but I have yet to do so. I am thinking of going to a hard-drive digital system which would mean I would not need copies. I presently copy all my cds and extensively treat them.