Abstract: A method of preparation of a Lithographic Printing Plate comprising the steps of, selecting a substrate for making of the printing plate from a natural or synthetic polymeric sheet element material having a tensile strength in the range of 400 to 3000 Kgm/cm2 and thickness ranging from 75 microns to 250 microns; shrinking the said substrate to have shrinkage in the range of 0.2 to 2.0% by exposing the substrate to heat of temperatures ranging from 140 to 180 degrees Celsius for 8 to 12 minutes; subbing the substrate to alter the surface energy of the substrate; forming a hydrophilic lithographic coating by reacting a hydrophilic binder with a cross linking agent, an accelerator, at least one pigment, at least one cationic surfactant and particulate silica having micron size ranging between 1 to 5 microns and a pore volume ranging between 0.2 ml/gm to 1.

Abstract: This invention relates to a novel process of making of a positive image producing film by using an ink jet printer commercially available in the market and using a clear film coated with an ink receiving layer as described in this invention. It further describes the method of producing such a clear film for the purpose of using it as a positive for making printing masters for various printing applications.