At 10:03 AM 7/1/2003 -0400, James L Wolf wrote:
One thing I also said that I'm not as sure about now. I said
something like analog preservation will no longer be possible in the
near future. I based this on the steady attrition of suppliers of
magnetic tape, assuming that demand would dry up to the point that
tape
would no longer be available at all. Does anyone disagree with this? I
suppose that tape could be made to order by someone (?), but it would
have to be much more expensive than it is now.
The classic method of making magnetic tape is suitable only for a
substantial market. I do not know the dimensions, but the sheet of base
material which is created, coated and slit is many reels wide. Unless
there
is a different process available, the cost of the needed facility
would be
prohibitive without steady volume. (I recall having seen a video of the
slitting operation; the sheet of "tape" was of the order of a meter
wide.)
The salvation of open-reel tape may prove to be the cassette. In the
beginning, cassette tape required only that the sheet be slit in
eighth-inch widths instead of quarter-inch. I don't know whether the
method
is different now, but it seems likely that archival tape will be
feasible
as long as cassettes are being made.
Mike
mrichter@xxxxxxx
http://www.mrichter.com/