8 Nov
2007
8 Nov
'07
3:37 p.m.
--- Chuck Guzis <cclist at sydex.com> wrote:
What could be going on? Could the hermetic sealing
of new disks
allow the more volatile components to permeate the
coating and weaken
it?
Perhaps. But I think it much more likely that the
binder formulation was bad. I've heard on this group
and elsewhere that Wabash and early 80's
pre-"DataLife" Verbatim disks were defective and
failed early. Formulations presumably changed over
time, and there is certainly an opportunity for
defective production lots. If the similar phenomenon
in magnetic tape is relevant, heat and moisture
accelerate binder breakdown.
What brand of disks failed in this way? Was there a
part number or other identifier? It would be
interesting to collect data on vintage/SKU and brand
of
disks vs. observations of binder breakdown or
successful usage.
--Bill