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Re: arsclist non-member questions about CD-Rs
David Seubert wrote:
> >In discussing my decision with some people at NARAS (Grammy Grant folks)
> >to use Mitsui Gold blanks, they were comfortable that I had thought
> >through the process and did not have any alternative suggestions. We both
> >chuckled at Mitsui's 300-year life expectancy claim, but wondered how
> >their lawyers would let them say that if there was not at least some shard
> >of evidence.
> I have a copy of the Mitsui test report that makes the 300 year claim. If
> anybody wants to see it, let me know. As I remember, it was an average of
> 300 year LE on average, 145 year LE with 95% confidence. But anyway, the
> whole point of the Mitsui study was that Phthalocyanine media outlasts
> Cyanine media, not that it lasts forever.
> David Seubert, Curator
> Performing Arts Collection
> Davidson Library Special Collections
> University of California
> Santa Barbara, CA 93106
> (805) 893-5444 Fax (805) 893-5749
Our findings are posted at http://www.mscience.com/longev.html
Most CD-R manufacturers either ignore longevity or use BLER alone to
arrive at a flawed number. Mitsui has included both BLER and jitter in
most of their results. This helps, but is still insufficient for
attempting to predict longevity.
Media Sciences, Inc.
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