[OM] Re: Low cost backup

[Chuck Norcutt]

Phthalocyanine dye is what you're looking for.  Just don't store your 
CD's and DVD's in a tub of solvents.  Phthalocyanine dye doesn't do well 
in those environments. 
<http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6TGY-4JV447Y-1&_user=10&_rdoc=1&_fmt=&_orig=search&_sort=d&view=c&_acct=C000050221&_version=1&_urlVersion=0&_userid=10&md5=ce5b8ca1cb2c7f96189e9e698a25bff1>

Chuck Norcutt


Moose wrote:

> 
> In both cases, it's not just the gold reflective layer that gives the 
> longevity. The second major component in computer writable CDs and DVDs 
> is the dye that changes color when the laser hits it. The only dye so 
> far known that doesn't fade/deteriorate relatively rapidly is patented 
> by Mitsui. I think all name brand gold disks use the Mutsui dyes, but 
> there's nothing to stop someone from making gold disks with inferior 
> dyes to make a quick buck.

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