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Extended colour management is introduced for integrating the colorants visual characteristics in the visual, but also in the near infrared spectrum (NIR). Many conventional graphic inks are such that their light absorption in the visual (V) and NIR specter can be very well measured, and we are using this for our goal which is the following: firstly to create a double condition of graphic reproduction - invisible graphics to the human eye, but allowing to be registered by instruments measuring in the NIR area. The second goal is to design graphic elements that are not rec- ognized in the NIR specter, but are visible so that we can see them. And thirdly: to produce a “double image” with conventional graphic inks, but in such a way that each image is recognized only in the previously set wavelengths. This approach introduces modified learning on graphic arts separation where two independent images are joined in creating CMYK printing channels. The second image as a gray record is the desired black component (K) in the first visible spectrum image. The standard colour management ends in the visible space (1) but with the help of inks management, a second hidden image can be developed in the NIR space. Channel K acquires a new meaning. It is the carrier of its own information in image and text form.
Infraredesign IRD; Near infrared NIR; CMYKIR separation
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