Yes, you can fix Procion dyes on paper. Thinking about it, rather
than just diving in in the heat of the moment, it became somewhat
obvious. Soda ash. I'm pleased about this discovery, now those
old dyes can be used, fixed, pasted on paper without bleeding.
I placed paper on plastic, wetted it with soda ash solution, then
dripped dyes. Left over night to dye, the next problem was how
to wash out. Answer, place on tray, hold the tray diagionally,
pour water over paper until it runs clear. I then put a little
Synthrapol in water water to wash over paper. May be this
last bit is not necessary?!! Anyway, it's worked for me.