CALCIUM WASH

A procedure for washing the rollers in a lithographic press to remove the calcium buildup that comes from paper, ink, or fountain solution. The procedure involves a thorough washing of the rollers with a warm acidic water solution (vinegar & water), followed by a thorough water rinse. Calcium can lead to plate blinding, roller stripping, and emulsification. Special roller cleaning compounds are also available for removing calcium (available from Graphic Ink Co.) See also “Complexing Solution”.