How to protect yourself from forgery, ensure authenticity or customize the worksheet before printing

摘要

The invention provides a method for preventing forgery, ensuring authenticity or personalization of preprinted pages, which is characterized in that the preprinted pages are protected or personalized by printing micro records on the printing part of all or part of the printed pages. The temperature of the highlighted printing process on the pre printing paper is higher than the flexible point of the dye used for printing, and then the cooling stage. These microrecords correspond to holograms and diffraction patterns,Picture or text. Figure 1 illustrates graphically the elements of a machine that can be used for this purpose.