[GreenKeys] Teletype Model 43 ribbon

[Gabriel Egan]

Dear Greenkeyers

I know it's not quite the technology preferred
by this list, but I've got hold of a Teletype
Model 43 and I wondered if anyone had expertise
to help me get it running correctly.

It communicates with my Altair 8800 clone
computer perfectly, but the printing quality
is poor. The reason seems to be that the ribbon
isn't advancing. The ribbon comes out of a cassette
that is fixed to the body of the machine (doesn't
move with the printhead) and there doesn't seem
to be any machinery that would advance it. The
ribbon forms a big loop that is the width of
the platen and head its within this loop and
moves rightwards while the ribbon stays stationary.

There are no rotating spindles on the ribbon cassette,
so any mechanism to advance it would have to haul
on the ribbon itself, but there doesn't seem
to be any such mechanism. It the printhead
itself supposed to drag the ribbon in some
way as it moves over it?

Regards

Gabriel Egan



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