Alright this is the most awesome post I've read all day :) I really need to get to work putting together the kit Microbee that's currently sitting on my other desk....
'Fast' was not a word one would use to describe them, though, even compared to the matrix printers that took minutes for each page of high-resolution output.
Theoretical result: raised dots punched into the paper by the daisy wheel, able to be read by a blind person.
Actual result: the proportions were wrong for reading, and most of the time the paper jammed on the roller because of the padding.
Nice idea though.