izvorni znanstveni rad
With new technology of CMYKIR separation we create double space in design of postage stamp. The procedure is to connect the two images, visual and Infra information. Theme is divided to motif and its hidden context. Purpose of camouflage, double information is discussed and analyzed on small dimensions of postage stamp. New phases are defined in preparation of graphics for new methods of separation channels of graphics to obtain effect of infrared hidden images in visible picture. We introduce new technology of scanning in ultraviolet and infrared selections: 570, 715, and 850 nanometers. At the same time ultraviolet colorants are set with the migration from yellow to brown. Scanning is conducted with the barrier of UV 254 nm. With these methods of scanning we extend the tools for authenticating postage stamp as security paper. Two independent informations on a stamp are planned as graphical and printing solution with a goal of extending the quality of printing process and development of new security inks.
infrared graphic ; Z value ; security print ; postage stamp ; camouflage image ; hidden information ; CMYKIR separation
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