Taken from here, 1963 -
Thoughts to buy tape by
There is a new magnetic tape. Intended for those who record
sound for a living instead of just for fun, it is now coming into
stock at electronics supply houses. These dealers, however,
consider it none of their business whether the tape is needed
for fun, profit, or the general betterment of the human race.
There are two main points of novelty:
1. We suspend our iron oxide needles in a new binder, which
is adaptable only to our highly proprietary and unbeatably
clean and uniform method of manufacturing sound tape.
Excellent as the generally used poly(vinyl chloride) may be
for the purpose, our binder seems not only to age with demonstrably
more grace but it forms a smoother top surface
(which is widely known to reduce intermodulation distortion,
for reasons never wholly understood). The needles do not
aggregate in it in the usual wood-grain-like pattern, nor do
they get battered and fractured in the attempt at homogeneity
of distribution. Therefore print-through measures a whole 55
db down from the recorded signal in the standard test, and this
in turn greatly extends the time between periodic rewindings
that tape-recordings should get.
2. The support is not the super-strength kind but cellulose
triacetate, treated to make it stronger than triacetate has any
business being. Amateur recordists generally don't realize
when they buy super-strength that the low-tension equipment
used in the home never requires it, though it costs something
in audio uniformity and money. Professionals with their hightension
equipment, on the other hand, have long known that
in case of trouble, a clean break is instantly apparent, remediable,
and preferable to the treacherous stretch-over 70%
before breaking-of the super-strength stuff. (Our treated triacetate
stretches no more than 0.5 %. We trademark it DUROL
Didn't you know we made magnetic tape ? Ask for EASTMAN Type
A303. (Type A304 has a thicker coating for higher output with less
amplifier gain and its attendant noise. It is recommended only for
commercial recording of originals on adjustable-bias equipment.)
Got to love their claims!
On Tue, May 12, 2009 at 9:09 AM, Michael Biel <[log in to unmask]> wrote:
> From: "Frances, Melodie" <[log in to unmask]>
> > We have some reel to reel, probably early 60s with a strong vinegar
> > smell and some very visible cupping.
> Can we have the brand and type data for this tape if you know it? And
> it should be noted that this tape should be kept away from all other
> tape and the machines fully cleaned after playing it.
> Mike Biel [log in to unmask]