[TUHS] Graphic Systems C/A/T phototypesetter

Gregg Levine gregg.drwho8 at gmail.com
Tue Dec 10 08:20:01 AEST 2013

Largely correct yes, but the two, phototypesetting and offset are two
completely different methods. Take a look by the way inside the book
written by the pair who brought us the C programming language, and
they explain how it was set.

It is interesting since the phone company attempted to use that method
for one of its documentation runs, it did not work and an outfit that
I was associated with, my father ran it, did in fact complete it. That
was done using a much better method and used the same output device.

It would be interesting to find out more if possible as to what that
method described was used for.
Gregg C Levine gregg.drwho8 at gmail.com
"This signature fought the Time Wars, time and again."

On Mon, Dec 9, 2013 at 4:59 PM, Jaap Akkerhuis <jaapna at xs4all.nl> wrote:
> On Dec 9, 2013, at 22:29, Jacob Goense <dugo at xs4all.nl> wrote:
>> All, I'm looking for images of the cat device as mentioned several
>> times in the 7th edition manual, see e.g. TROFF(1)and CAT(4).
>> From what I gathered during my digs is that it should look like a
>> GSI 8400, but that didn't help. Anyone here who can help me find out
>> what these machines looked like? A picture would be the best, but
>> information on what to look for in images of unnamed typesetters will
>> do as well.
> I really have to dive deep in some old papers where I used to have some
> documentation including the the way the light path worked (fiber optic
> cable, the DBL lens).  One of these days I will try.  The wikipedia
> description <http://en.wikipedia.org/wiki/CAT_(phototypesetter)> seems
> pretty accurate although I have never seen the beast myself.
>         jaap
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