weekend. I read everything I could find about what products to use or not use. I have a chemistry background so that helped. At any rate, I settle d on the following simple cocktail for restoring the rollers.... It worked fantastic:
Largely, that replicates an old typewriter-platen-restore formula, adding a cetone. The naphtha was solvent for typewriter ribbon ink (and early dot-matrix pri nters) and the DOT brake fluid was a bit of plasticizer and glycerine. I'm think ing a lighter plasticizer might work as well (Armor-All vinyl finish?).
Most modern printer roller technologies are compatible with isopropanol, so the acetone might be slightly more aggressive than required. Rollers tha t take a glaze from paper, and a bit of dirt, take well to a scrub with green Scotchbrite with soap or alcohol. Even typewriter ink was removed (slowly) with isopropyl.
A good roller cleaning should hold you for a few years. Congratulations o n the careful formulation; you didn't wast time OR material!