PRINTING AND WRITING SUBSTRATE PREVENTING BACKLIGHT READING AND METHOD FOR MAKING SAME
A printing and writing substrate which prevents backlight reading and a method for making same, wherein the opacity, the colouring and the surface state of the substrate can be modified in accordance with the quality required for subsequent printing thereof as desired. The method includes using one or more support sheets (1) and a multifunctional layer (2) to which a plurality of multifunctional layers (3, 4) may simultaneously be added, optionally incorporating additional tamper-preventing barrier layers (5). The invention is particularly useful for making lottery tickets and security paper.