Some daisywheel printers could be coerced to print high-resolution graphics, by repeatable printing a few zillion periods and using the variable line spacing and tab settings.
'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.
Coming back to the original post, I wrote a proof-of-concept Braille output program for a daisy wheel printer. Basic idea was: take a line of text input, eg "hello". Convert to Braille ("⠓⠑⠇⠇⠕"), but reverse the dot patterns to make "⠪⠸⠸⠊⠚"). Sandwich a sheet of paper towel between two sheets of paper, feed it into the printer and print the reversed dots using "." and space, micro-positioned.
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.
'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.