A New AntiCounterfeiting Feature Relying on Invisible Luminescent Full Color Images Printed with LanthanideBased Inks
نویسنده
چکیده
wileyonlinelibrary.com to authenticate are therefore important for the protection of brands and valuable documents such as bank notes, diplomas and certifi cates. Luminescent tags or labels are appreciated security elements for protecting authenticatable articles. One way to incorporate luminescent materials as luminescent security elements is to print them with luminescent inks. [ 2 ] Nowadays, these printed luminescent security elements usually comprise only solid or halftone [ 3 ]
منابع مشابه
Resistance Properties of Printed Polyolefin Films using Water-Based Inks
During recent decades due to the increase in pollutants release from various industries, reduction or elimination of volatile organic compounds VOCs has become one of the main purposes of researches in order to protect the environment. In this research, two acrylic emulsion resins and an adhesion promoter polyester emulsion resin were used to optimize water-based printing ink formulation for pr...
متن کاملInk-Jet Printing Cotton with Cationic Reactive Dye Based Inks
The current commercial application of ink-jet reactive inks to cotton fabrics has been through pre-treating with pad liquor prior to printing. In This study made an effort to provide a single phase ink-jet printing process for printing cotton fabric using the novel cationic reactive dye in ink’s formulation. Cotton fabric was printed upon with the novel cationic reactive dye and commercial anio...
متن کاملColor Reproduction of Metallic-Ink Images
We study the color reproduction of full-color metallic-ink images. Full-color metallic-ink images are prints whose contributing colorants are exclusively made of colored metallic inks. Due to the presence of metallic particles, metallic inks show a metal-like luster. These particles are opaque and hide the underlying ink or substrate. In order to obtain predictable halftone colors, we need a ju...
متن کاملHiding patterns with daylight fluorescent inks
We propose a method for hiding patterns within printed images by making use of classical and of two daylight fluorescent magenta and yellow inks. Under the D65 illuminant we establish in the CIELAB space the gamut of a classical cmyk printer and the gamut of the same printer using a combination of classical inks with daylight fluorescent inks. These gamuts show that a significant part of the cl...
متن کاملReproducing Color Images with Custom Inks Abstract Reproducing Color Images with Custom Inks Appendix A: Data for Papers and Inks 97 List of Figures
Reproducing Color Images with Custom Inks by Eric J. Stollnitz University of Washington Advisor Associate Professor David H. Salesin Computer Science and Engineering Chairperson of Supervisory Committee Professor Loyce M. Adams Applied Mathematics This dissertation investigates the general problem of reproducing color images on an offset printing press using custom inks in any combination and n...
متن کامل