29 Dec
2012
29 Dec
'12
3:12 a.m.
On 12/28/2012 11:07 PM, Chuck Guzis wrote:
On 12/28/2012 02:12 PM, jim s wrote:
Good suggestion. However you are dealing with college students and what
oil was available. I was amazed at how much of the oil the pad
retained. This would have been much better, but not sure if the oil
would have pooled or evaporated in the bottom of the TTY. Note there
was no budget for a replacement ribbon, or a place on campus from which
to steal one.
Being one of the obtainers of supplies from other departments, they all
had better hard copy terminals, or printers than the rattle trap.
Once some of the students had graduated, supplies freed up elsewhere,
and made their way back to the lab.
Jim
Or, run a single ribbon on a TTY for 3 1/2 years
(no budget) till you
could see it was almost white. I think the last few weeks it was mostly
printing oil on the paper.
It's been a long time, but I've had good luck with "odorless lamp
oil", which is essentially triple-filtered kerosene/paraffin. I think
that there's a branded version called "Klean Heat" that's almost the
same stuff. I use it as a lightweight lubricant (it has the viscosity
of water and will evaoprate with time). I always have a gallon or so
around here because wintertime power outages can last more than a day
or two and an oil lamp actually delivers quite a bit of light.
You might investigate getting some rubber stamp pad ink and apply it
to your dry ribbon. The old "Mac Inker" was a rig with a felt pad
with a reservoir that spread ink onto your slowly-moving ribbon.
Motive power was a small geared down (perhaps 4 RPM) synchronous motor.
--Chuck