On Tuesday, March 1, 2016 at 9:02:42 AM UTC-8, DaveC wrote:
Looking for roller rejuvenator that you can recommend (ie, have used).

From twenty years ago, fixing up impact printers...

I distrust brandnames... but start with a wipedown with isopropyl alcohol
(quick, removes ink) followed up with automotive brake fluid (which replaces
plasticizers and makes 'hard' rubber slightly more pliable). You
might want to leave the brake fluid on the roller for a few minutes.

Brake fluid is mainly heavy alcohol (glycerine), so it wipes off with
a damp cloth.