[GreenKeys] model 40 update - no suprise on the type carrier aka belt

[Jim Haynes]

On Wed, 1 Jun 2011, Gerry Block wrote:

> Jim I've never seen the inktronic but from what I've read over the years I
> thought they were designed to spray paint everything but the paper.
>  
I first saw the Inktronic principle demonstrated in 1959, printing on a
strip of paper tape.  If there had been a market for a high speed tape
strip printer it might have been a real winner.  The problems got a lot
worse when it was made into a page printer, with 40 nozzles to print
80 columns.  As it came from the factory the print was readable across
the page; but things went downhill from there.  I guess the main problem
was paper dust getting attracted to the electrodes, which were in the
open air.  It was very hard to clean the electrodes without bending
them, which caused distortion of the printing.    There was a problem
getting ink droplets of uniform size to come out of the nozzles.
All in all, a clever idea but not very practical.