On Thu, 5 Nov 1998, Mark Willis wrote: > like that, to repeat the signal? But I thought it wasn't pen-based, > rather burn marks on paper somehow, as ball point pens didn't exist then > Fountain pens might not work well here... Last time I say a decent drawing of an Edison receiver it used an inked roller and a solenoid to make it touch the paper. There was an ink-soaked felt (?) roller in permanent contact with the writing roller. I would not like to have to use such a thing without gloves. Peter