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- Newsgroups: rec.photo
- Path: sparky!uunet!paladin.american.edu!darwin.sura.net!ra!ra.nrl.navy.mil!buck
- From: buck@ra.nrl.navy.mil (Loren Buchanan)
- Subject: Re: Photo CD
- Message-ID: <Bzroqo.C45@ra.nrl.navy.mil>
- Followup-To: rec.photo
- Summary: Archival forms are coming
- Keywords: PhotoCD archival
- Sender: buck@curie.nrl.navy.mil
- Organization: Naval Research Lab, Washington, DC
- References: <1992Dec23.172708.10121@spdcc.com>
- Date: Thu, 24 Dec 1992 14:11:11 GMT
- Lines: 29
-
- In article <1992Dec23.172708.10121@spdcc.com> joe@spdcc.com (Joseph Francis) writes:
- >I backtracked through the message tree and found that the original
- >question was, indeed, archival storage. The feed I get on the french
- >(IRCAM) machine is quite strange, I think. I also didn't discuss
- >plastic fracture if photographic paper expands and contracts with
- >different humidities...
-
- In regards to archival properties of Photo CDs, archival forms are being
- developed. Six months ago when I started to contact vendors about write
- once CDs, they all claimed a useful life of at least 10 years. Kodak has
- always claimed much longer life spans. Recently DIC (one of the makers of
- write once blanks) has been claiming a useful life of over 100 years (this
- assumes storage in a dark place). Remember that what makes write once CDs
- work is a dye layer that is modified by a laser that is not strong enough
- to modify the gold behind the dye.
-
- Now if you want true archival class PhotoCDs, you will need to have physically
- stamped CDs made. There is work underway to develop standards for testing
- stamped CDs that will ensure a useful life in excess of a thousand years.
-
- B Cing U
-
- Buck
-
- --
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