3M™ Screen Printing Ink is a fast-drying process colour ink used for screen printing. Intended exclusively for use with 3M™ Diamond Grade™ Roll-Up Sign Sheeting Series RS60/64, this black, opaque process colour can be conveniently conveyer or air dried. Because this process colour dries quickly, please note that this colour also evaporates quickly and in greater amounts than other process colours. When air drying sheeting printed with this ink in large volumes, please allow for sufficient ventilation due to vapours.