engleski

The print of the double picture and INFRAREDESIGN in the space of the security graphics

The development of printing graphics with two images of which one is observed under IR light and the other in daylight is becoming a reality in graphic product protection (Žiljak V., Pap K., Žiljak I., 2008). If we look back into history, up till now there have been two methods for producing double images: on basis of the lenticular method or with the help of holography. Both of the methods require a carrier with specific characteristics in respect to micro lens use or a highly embossed master on special material. In comparison with the mentioned methods infrared graphics are not limited with dimension characteristics. Infrared design is a method independent of material, and all kinds of paper may be used, even silk and textile. In the same way that holograms require specific conditions such as (monochromatic) light sources, infrared design recognizes two images in two different wavelength areas. For instance, any video camera today has the possibility of using the IR area along with the daylight area owing to CCD technology development. This is why the INFRAREDESIGN method can be checked easily, introduced into production and set as the simplest printing method in the graphic securities area.

Security, Infrared, Steganography, Printing

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