On Dec 6, 2013, at 3:28 PM, Ethan Dicks
<ethan.dicks at gmail.com> wrote:
On Thu, Dec 5, 2013 at 7:39 PM, Bob Armstrong
<bob at jfcl.com> wrote:
Does anybody have a source or replacement for
LA120 DECwriter III ribbons?
I've actually got about 8 "new old stock" ones, still shrink wrapped, but
all that I've tried are pretty much dried out despite the shrink wrap. They
barely make a mark on the paper, even with the little print impression lever
cranked all the way up.
I don't have any that are any newer, but what about adding a solvent to
moisten the ones you have? A quick patent search reveals methods of
impregnating fibers with ink and acetone to make typewriter ribbons, but
there must be more than that because acetone is so volatile. A mix of
acetone and a heavier aromatic solvent?
WD-40 has a good reputation for this, but I'm always wary about
applying WD-40 to anything (it does terrible things to pinball
machines over the long term, I have to imagine it's not that
great for print heads). I imagine it's probably the white
spirit in the solvent cocktail that does the job for printer
ribbons, but I somehow imagine you need more than just some
mineral spirits from the hardware store to get the job done.
Agreed. The important thing to remember, in spite of many confused users out there, is
that WD-40 is NOT a lubricant. When used as a lubricant, it will temporarily loosen the
things you use it on, and then it will stick them together with sticky residue after the
volatile parts evaporate. WD-40 is trouble when used on machinery; it's horrible to
imagine how bad it would be if it were to creep into the guts of a print head. You may
very well end up with the print wires stuck inside the head.