21 Jul
2018
21 Jul
'18
10:26 a.m.
The stability of the dyes is only part of the problem. Even mass-produced
read-only optical media (e.g., movie/video content DVDs) can become
unreadable over time because the reflective layer (typically aluminum)
under the data-encoded layer corrodes due to the chemistry of the dyes and
encasing plastic, and heat accelerates the process. The "gold" media may
have enough of a protective layer of that noble metal (it's obviously not
solid gold) that corrosion doesn't occur - only a few atoms' thickness is
required.
On Sat, Jul 21, 2018 at 10:58 AM, Chuck Guzis via cctalk <
cctalk at classiccmp.org> wrote:
On 07/21/2018 08:14 AM, Carlo Pisani via cctalk
wrote:
what is your experience?
Generally very good. But then, my valuable stuff on CD-R was done on
MAM-A (Mitsui) "gold" media. Some of it is 20+ years old. On the other
hand, no CD-RW disk that still have has survived.
My experience with DVD-R has been somewhat variable.
--Chuck