At 12:39 PM -0700 8/1/05, Kotsinadelis, Peter (Peter) wrote:
Henning Wulff wrote:
Unfortunately some CD's are very severely affected by even the slightest
bit of UV, so you can't leave them exposed to light. I've had some CD's
go bad on a desk near a north facing window in a few days. CD quality
matters; the best ones are Mitsui Gold, the rest are downhill from there
and most should only be used for things that you won't be interested in
any more in a couple of years, even if you store them correctly.
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Mitsui claims 100 year life expectancy. FUJI CDRs claim 70 years. Bottom
line is neither of us will be around to valiadate that claim. :-) Most
of this is BS but newer CDs are using better material than older ones.
But, the reality of CDs and DVDs is if stored properly, most modern CDs
(not the older ones from 5+ years ago) will last 20+ years if you store
then in a black (not white) sleeve inside a closed binder. Preferably
with a zipper or other enclosure to ensure no light eneters. Then in a
place where the temperatures will not go to extremes.
CDs that were made 5 or more years ago should be checked and re-burned
onto newer CDs. It is the dye (cyanine, phthalocyanine or azo) not the
silver or gold in the CD that makes a CD last longer. Again, bottom line
here it buy a decent brand if you want it to last a while.
Peter K
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I've had Fuji's from 2 years ago fade in less than a month; not lying
on a desk either.
--
* Henning J. Wulff
/|\ Wulff Photography & Design
/###\ mailto:[EMAIL PROTECTED]
|[ ]| http://www.archiphoto.com
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