As an aside, note that this brochure from Audio Devices:
https://ia800804.us.archive.org/29/items/TNM_Audio_Devices_Inc_-_Brochure_The_memory_busin_20170629_0528/TNM_Audio_Devices_Inc_-_Brochure_The_memory_busin_20170629_0528.pdf
(I put it at about 1962) differentiates between "computer tape" and
Back in 1972, Billboard magazine published an interesting retrospective
on magnetic tape.
One of the more interesting articles states that Audio Devices laid
claim to the first computer tape in 1957:
https://shorturl.at/hqGS8
Apparently there was a patent fight over Marvin Camras' tape patent,
w
rg'
Subject: RE: Early 3M Computer Tape Type Numbers
FWIW this is an announcement of a 3M brochure from a 1957 Datamation:
Magnetic Tape for Instrumentation, an 8-page brochure, covers six types of
"Scotch" brand instrumentation tapes for use in telemetering and airborne
r
Type” tapes of this early era were available in a variety
of widths, from ¼-inch to 2 inches
-Original Message-
From: Paul Koning [mailto:paulkon...@comcast.net]
Sent: Friday, June 26, 2020 11:44 AM
To: Tom Gardner
Cc: cctalk@classiccmp.org
Subject: Re: Early 3M Computer Tape Type Numbers
> On Jun 26, 2020, at 1:46 PM, Tom Gardner wrote:
>
> Paul
>
> Thanks, I had found this ad a while ago but thought it was ¼-inch. Upon
> careful reading all the notes I found, "Errors per roll based on recording 7
> tracks on rolls ½" x 2500'. "
>
> It looks like 3M may have called their
tape
until the late 60s
Tom
-Original Message-
From: Paul Koning [mailto:paulkon...@comcast.net]
Sent: Thursday, June 25, 2020 5:15 PM
To: Chuck Guzis; cctalk@classiccmp.org
Subject: Re: Early 3M Computer Tape Type Numbers
> On Jun 25, 2020, at 5:14 PM, Chuck Guzis via cctalk
>
> On Jun 25, 2020, at 5:14 PM, Chuck Guzis via cctalk
> wrote:
>
> On 6/25/20 1:55 PM, Tom Gardner via cctalk wrote:
>> I'm trying to figure out what were the earliest Type numbers for 3M ½-inch
>> reel-to-reel computer tape
>>
>> As best I can find, 3M began marketing a Type 777 computer t
> On 6/25/20 1:55 PM, Tom Gardner via cctalk wrote:
Off the top of my head, I have processed a lot of 701 tape. Also,
several reels of 4-digit tape (e.g. 8140. 8938).
But again, I'd have to look through my logs.
--Chuck
On 6/25/20 1:55 PM, Tom Gardner via cctalk wrote:
> I'm trying to figure out what were the earliest Type numbers for 3M ½-inch
> reel-to-reel computer tape
>
> As best I can find, 3M began marketing a Type 777 computer tape about 1967.
> The Type 700 appears to be somewhat later. But 3M sold c
I'm trying to figure out what were the earliest Type numbers for 3M ½-inch
reel-to-reel computer tape
As best I can find, 3M began marketing a Type 777 computer tape about 1967.
The Type 700 appears to be somewhat later. But 3M sold computer tape directly
to at least government customers (e.g
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