>>15188773you are on fire!
>>15188587Is she an offset lithographer?
>In offset lithography, scumming is a generic term for the presence of ink on non-image areas of the printing plate, which can be caused by a variety of press conditions, in particular the use of a fountain solution that is too acidic, where the solution begins to eat away at the surface of the metal plate and its protective coating, or by a fountain solution that is too alkaline, as the desensitizing properties of gum arabic are lost at a pH greater than 5.0.whew!
