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From: karn@petrus.UUCP
Newsgroups: net.audio
Subject: Re: Undestroying CD's - the whole sordid story...
Message-ID: <347@petrus.UUCP>
Date: Mon, 13-May-85 21:34:06 EDT
Article-I.D.: petrus.347
Posted: Mon May 13 21:34:06 1985
Date-Received: Tue, 14-May-85 23:41:44 EDT
References: <970@ulysses.UUCP> <935@ucbtopaz.CC.Berkeley.ARPA> <1148@hound.UUCP>
Organization: Bell Communications Research, Inc
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Dick, in the category of "you can't say they didn't warn you", I quote
the following from a current series on CD technology in Electronics and
Wireless World:

"...Conversely, the label side of CD is much more vulnerable, as the lacquer
coating is only 30 [microns] thick. For this reason, writing on the label
side is not recommended; pressure from a ballpoint pen could cause
mechanical damage to the information layer, and solvents from marker pens
have been known to penetrate the lacquer and corrupt the disc. A common
party piece is to show off the error correction system by writing on the
readout side with a felt tip pen. This is relatively harmless as the disc
base material is impervious to most solvents."

By the way, this has been a pretty good series. It started in the January
1985 issue.

Phil