Method of setting amount of fountain solution for ink and fountain solution emulsion in offset printing machine by detecting energy needed to reduce fountain solution

摘要

Amount of fountain solution to be applied to printing plate (1) is set by detecting energy level of beam source used to reduce fountain solution applied to area to be kept color free (4) until color acceptance on the area, due to reduction of fountain solution, is recognized. Beam source is connected to control circuitry and data used to set amount of fountain solution. INDEPENDENT CLAIM is included for 1) device to set amount of fountain solution to be applied to printing plate.