Before scanners were used in pre-press departments for color separations, sheet film and process cameras did the job. After fix and wash, a quick dunk in a solution of 50/50 isopropyl & water in a tray along with squeegeeing sped up drying time.(posted 9069 days ago)The source for the alcohol was the same as used on the litho presses and came in 55 gal drums. No steaks or spots. Keep in mind though, this was 10 X 12 sheet film.