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RE: [AV Media Matters] First Question

Not that I know anything about this, but I recall a huge computer tape
scandal from Europe where the tapes were first soaked in solvent and then
the coating applied.  The company, whose name escapes me, had not removed
the solvent which then dissolved the coating, usually only after the tape
had been used.  This created an enormous loss of data.

>From your description and the frequency with which it happens, it sounds
like a manufacturing error.

To get more information on the above scandal contact Seamus Ross at the
University of Glasgow.


Carol E.B. Choksy, Ph.D., CRM
1201 West Harrison, Chicago IL 60607
Tel: 312-433-7793
Fax: 312-433-7795
Email: cchoksy@doculabs.com

>-----Original Message-----
>From: Jim Lindner [mailto:jim@vidipax.com]
>Sent: Thursday, April 01, 1999 1:37 PM
>To: AV-Media-Matters@topica.com
>Subject: RE: [AV Media Matters] First Question
>amipa2@pobox.alaska.net wrote:
>> Anybody here experience the thrill of umatic oxide peeling off in
>> I have a certain tape, 10 years old, doing just that.  Never seen that
>> myself, and no other tapes are doing it.  Hmmm...
>I have seen it - but it is quite unusual, at least for the whole tape
>doing it.  It is more common for this to happen in sections.  There are
>several kinds of binder failures, and this is one of the worst.  My
>personal feeling is that tapes that have this type of failure very well
>may have had manufacturing problems from the beginning that just get
>worse - perhaps the tape did not have enough time to cure probably, or a
>coating error or contamination during the coating process.  The worse
>case I have ever seen was actually an audio tape - as the tape passed
>between the pinch roller and the capstan, the polyester binder kept
>going on the take up reel, but the binder peeled away in one piece and
>went in another direction - very nasty, and no way to recover.
>Jim Lindner
>The Full Service Magnetic Media Restoration Company
>See our Web Site at www.vidipax.com
>212-563-1999 ext. 102

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