I did another examination of my three typewriter ribbons, and did a thread count.
Note: "Width" is spanning the width of the ribbon, i.e., 1/2 inch (13 mm);
"Length" is he direction of the 8, 10, or 12 yards the ribbon is long.
Cotton ribbon: 128 per inch W x 072 per inch L
Silk ribbon: 192 per inch W x 128 per inch L
Nylon ribbon: 192 per inch W x 128 per inch L
I was *shocked*. I thought the silk ribbon was supposed to be something like 300 threads per inch, and it isn't. At least not today's Kores-brand ribbon. Nevertheless, the Nylon ribbon edges out the silk ribbon in print qualiy, but loses out due to poorer print color. In the end, though, the Nylon ribbon had the clearest print output.
-- Ardie