X-Message-Number: 18781
From: "Solion" <>
Subject: Recording for the ages 
Date: Tue, 12 Mar 2002 20:36:16 -0800

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I am hoping more people will be sending videos to me for digital encoding to CD

But if you have decided to record your own. here is a tip as to what types of 
CD-R's you may 
want to use. 


The CD's I will be using are the Kodak Ultimate golds And  TDK both use the 
Phthalocyanine

material to hold the information. You may consider a simple black paper envelope
around the CD

jewel case to protect them. I am considering a vaccume seal as well to protect 
them from moisture, 
but that may be as easy as a ziplock baggie and decient pack. 


I also want to offer somthing else, But don't know how I would offer it. The 
idea of doing the CD message 

could be extended to family members / friends of those who allready have been 
suspended. I know that some of these people have friends/family who may have 
dissagreed or have chosen not to be suspended themselves. 


They could say and share their feelings, Sort of a good bye message in a Cd that
can be placed with the patients effects. 


As for playback in the future, Don't worry about not having a machine to do so, 
I am packing  

a specially preped laptop in a sealed container with dry nitrogen. with the 
ability to rebuild the whole 
OS and reload all the codecs.  Anyone needing it will have it available. 

But here is a bit of research on CD-R's

CD-R Color Is A Guide To Longevity

The color of the reflective foil and the color of the dye determine the CD-R's 
final color. The foil usually doesn't play a major role in CD-R lifespan. 
Although aluminum foil can oxidize enough to affect recoding, this is rare and 
happens only in extreme conditions. Gold foil is almost totally inert, and 
hardly ever causes trouble. 

The dye type matters more, because dyes have different chemical compositions, 
and thus different life spans. The four major dye types used in CD-Rs can be 
identified by their intrinsic color: 



  a.. Cyanine is the most widely used and cheapest CD-R dye. It looks bluish (as
  its name suggests) or blue-green when backed by a silver foil, but can look 
  distinctly green when backed by gold foil. 

    a.. Estimates of the dye's useful life range from 10 years to as high as 75 
    years. But data-storage is an inherently conservative business, so it's wise
    to assume the worst and plan only on a lifespan of 10 years or so. This 
    makes cyanine-based CD-Rs OK for most routine backups and legal archival 
    purposes. But they may be less acceptable for very long-term historical, 
    business, or family archives, unless you plan to re-record the data onto a 
    new or different medium every decade or so.


  b.. Phthalocyanine is an-almost transparent, very light aqua color, and 
  usually is backed with gold foil, so a phthalocyanine-based CD-R usually looks
  golden. For this reason, and because the dye is exceptionally durable, it's 
  sometimes called the "gold standard" of CD-Rs. 

    a.. Although phthalocyanine CD-Rs may be expensive overkill for routine 
    storage, they're tops for long-term archiving, with a reputed shelf life of 
    something like 100 years.


  c.. Formazan is a light green color, and is usually backed by gold foil, 
  producing a greenish gold CD-R. It's actually a hybrid of cyanine and 
  phthalocyanine, and combines the qualities of both. 


  d.. Metallized AZO is a dark blue, and is normally used with silver foil, 
  which gives the CD-Rs a dark blue appearance. Metallized AZO is said to have a
  long shelf life, approaching that of phthalocyanine.


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