Early 360 machines (Was: Front panel switches - what did they do?)
elson at pico-systems.com
Thu May 26 11:43:05 CDT 2016
On 05/26/2016 08:54 AM, Paul Koning wrote:
> Speaking of ribbons, in college I occasionally used a type of ribbon I've never seen on line printers since: a film ribbon. Think of the "letter quality" ribbons used on professional typewriters, or daisy wheel printers, a thin plastic film with some carbon-like coating on one side. Now make one the width of a line printer ribbon.
> Our 360/44 normally used a regular cloth ribbon, but a film ribbon could be mounted if desired. I did so to print my honor's thesis, using the film ribbon and the upper/lower case print train (TN train?) to print the final text (from RUNOFF on our PDP-11 system, which had no line printer).
Yes, that's exactly the purpose they were for. You mounted
the text train and a film ribbon, and got a fairly nice
looking printout. IBM's early manuals were all printed this
way, the look was pretty iconic. The printed output was
then photographed to make offset printing plates. (Later
they used IBM composer word processing printers, and they
looked nicer, with proportional spacing.)
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