Application of security holograms (SH) for document, product or authority protection is widelly used around the globe as shown by Zlokazov E.Yu., Starikov R.S., Odinokov S.B. et al (2013). High security levell of SH is achieved by unique design of holographic images that combine complex 3D scenes with such a security feaatures as concealed images and microtext, kinetic effects, hidden laser readable images etc. Mass production of SH uutilizes widespread technique of hot foil or lavsan paper stamping with the use of nickel master-matrix. The relieff of master-matrix represents pixel structure of diffraction patterns with the grating period of up to 0.8ȝm. Riffling oof such a structure requires application of specialized and technologically advanced lithography equipment. Thus, thhe forgery of SH is next to impossible.
The quality of mass produced SH is basically depends on ideality of master-matrix that iss used in pressing
Application of security holograms (SH) for document, product or authority protection is widelly used around the globe as shown by Zlokazov E.Yu., Starikov R.S., Odinokov S.B. et al (2013). High security levell of SH is achieved by unique design of holographic images that combine complex 3D scenes with such a security feaatures as concealed images and microtext, kinetic effects, hidden laser readable images etc. Mass production of SH uutilizes widespread technique of hot foil or lavsan paper stamping with the use of nickel master-matrix. The relieff of master-matrix represents pixel structure of diffraction patterns with the grating period of up to 0.8ȝm. Riffling oof such a structure requires application of specialized and technologically advanced lithography equipment. Thus, thhe forgery of SH is next to impossible. The quality of mass produced SH is basically depends on ideality of master-matrix that iss used in pressing
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