On Physical and Chemical Interaction of IAG/Nd-laser Radiation with Printing Plate Material

In continuation of previous works concerning direct methods of plate-making (c-to-p-technology) the interaction of the IAG/Nd laser radiation with printing plate materials has been investigated. These new results are partly correlated with those received earlier with the CO2-laser but in the case of IAG/Nd laser the absorptivity of the polymeric layers does not depend on metallic background preparation. That is why, evidently, it becomes possible to rise the energetic sensitivity of the plate material by introducing of the laser radiation additional absorbents into polymeric layers composition. The higher sensitivity of the coating results in its higher absorptivity and in the higher speed of the thermal destruction, i.e. in the faster plate-making process. The higher resolution of IAG/Nd-laser devices in comparison to the CO2-laser devices gives a possibility to rise the printing quality.