I have had good results with 70% iso-alcohol from Walmart.
The alcohol acts as a cleaner only, So, most types will serve this purpose.
The actual "transfer" medium is the other ingredient.
Good Luck
Roland F. Harriston, P.D.
I use a mixture of denatured alcohol and xylene. Had both from some painting I had been doing and it works well. About 1 part xylene to 5 parts alcohol. I printed a test page with various width lines and tried different ratios by painting a little of the mixture on the lines. You want the mixture to soften the toner and not smear the lines.
DuWayne