[GreenKeys] History of printing machines

[Jim Cooper]

Holy Moly !!   except for the links, it sounds 
like you were talking exactly about ME !!

First with the ditto carbons ...  a sponge and rubbing alcohol 
for manual printing !!   eventually my own desktop ditto with 
a drum for the alcohol !

In fact, I still HAVE the Model 80 and 1250s here ... 

For the Multiliths, I found a supply of PAPER masters 
that, if you typed on them with the right kind of ribbon, 
they would print maybe 100 to 150 copies ... really cheap! 

Jim  w2jc   (W2BVE way  back then)

On 8 Mar 2022 at 11:59, Harold Hallikainen via GreenK 
wrote:

> Looking at some of the processes:
> 
> 1. I had a small mimeograph machine
> that printed postcards. It was a
> tabletop hand crank machine. I later
> got a mimeograph machine that would do
> letter size copies. 
> 
> 2. In elementary school, I got a
> typewriter (
> https://hallikainen.org/gallery3/inde
> x.php/keh/keh1/adg ). At school, they
> used ditto machines to print class
> materials. The carbons were im the
> trash cans. I'd collect the carbons
> and make my own ditto master (type on
> paper with the carbon on the back
> putting backward inked type on the
> back of the paper). I'd then make
> copies by rolling the "master" with
> another piece of paper through the
> typewriter while brushing alcohol on
> the platen roller. The alcohol would
> soak through the copy paper and pick
> up ink from the master. The ditto
> carbons that I picked up out of the
> trash cans had been used to make ditto
> masters. As such, they had readable
> text on them. One teacher thought I
> was taking them to see test
> questions ahead of the test. 
> 
> 3. In high school, I got a Multilith
> model 80 offset press, then a model
> 1250. A local print shop let me use
> their copy camera to make negatives
> of the stuff I wanted to print. I'd
> tape the negatives into a masking
> sheet to layout the page. The masking
> sheet then went over a photosensitive
> plate, a sheet of glass out of an
> old TV was then put over the
> combination. I then exposed the
> plate to UV with a sunlamp. Developed
> the plate and onto the press it went.
> One of the projects run through this
> process on the 1250 is at
> https://miramonte1969.org/MUDS1969.pd
> f . 
> 
> Harold
> https://w6iwi.org
> 
> 
> 4. At one time I tried gelatin printing with a tray of Jello. That
> did not
> work very well.
> 
> 
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