> Tom A. Trottier <Tom@xxxxxxxxxxxxx> wrote:
> CD life is ~100 years or more.
Estimated ! I've never seen a 100 YO CD. I'd guess that even the substrate
material has not been around for more than 30 years.
> Film has to be very well washed to be archival.
I can still print/scan from my b & w negs made 30 years ago and I have made
contact prints from glass plates perhaps 50 YO.
> B+W needs a hypo eliminator.
> Color dyes are frangible by light, heat, age...
Perhaps somebody with a bit more knowledge of the CD process could fill me in,
but I thought that the type of CDs that you can burn on your home PC (compared
with for example a mass produced music CD) were based on changing a
dye "image" embedded in the CD.
Wayne Harridge
http://members.optusnet.com.au/~w_harridge
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