On May 5, 23:25, Tony Duell wrote:
> I have an HP82143 printer (the HP41 dedicated printer) with a broken
> printhead.
>
> Today I found an 'HP Digest' with an article about these printers.
> Aparently the conductors on the printhead are aluminium, which explains
> why I couldn't (and still can't) solder to them. And none of the normal
> tricks for soldering aluminium (like : Put a drop of oil on it, scrape
> the oxide layer off under the oil, immediately try to tin it with solder)
> work on this thin film.
>
> Has anyone here managed to mend a printhead like this?
No, but could you use silver-loaded conductive paint? That's what we used
to use to repair the printed tracks on membrane keyboards (including
Sinclair ZX keyboards). I've used it for a few similar things, and at
least one type can be soldered to, with care, after curing. I used to buy
it in 3g bottles from R.S., part no 555-156, current stock number
apparently is 186-3593 or 101-5621, costs just over a fiver.
--
Pete Peter Turnbull
Dept. of Computer Science
University of York
Received on Fri May 05 2000 - 18:16:32 BST