Wednesday, September 23, 2009

Here's a list of pens that have enough of a carbon content that they will react with Riso Film:

Black Sharpie
Pentel Color Pen
Tombow Brush Pen
Itoya Fine Point (non permanent)
Pigma Micron
Pitt Pen
Zig Calligraphy
Staedtler Pigment Liner
Rapidograph Ultradraw
Stabilo (all)
Ritmo Charcoal
China Marker
Staedtler 2b pencil
Sanford Uni-Ball
Black Crayon


  1. Thank you for this extensive list and the entire blog. This information is invaluable.
    Best to you,

  2. Thank you very much for sharing your thermofax ideas and tips, my machine has sat idle for a couple of years, but now I am ready to fire it up. I use natural dyes and gum trag to make my inks for printing with a 70 mesh screen, it works just great and you can pull a fine print.

  3. Thank you for the list! I've been meaning to do a test sheet to compare the clarity (ie carbon content) of all the pens I have. Do you know of any that created a particularly crisp line?