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METHODOLOGY FOR SUBSTRATE FLUORESCENT NON-OVERLAPPING DOT DESIGN PATTERNS FOR EMBEDDING INFORMATION IN PRINTED DOCUMENTS
METHODOLOGY FOR SUBSTRATE FLUORESCENT NON-OVERLAPPING DOT DESIGN PATTERNS FOR EMBEDDING INFORMATION IN PRINTED DOCUMENTS
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机译:用于在印刷文档中嵌入信息的基本荧光不重叠点设计模式的方法
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摘要
The teachings as provided herein relate to a watermark embedded in an image, and methodology for same, that has the property of being relatively indecipherable under normal light, and yet decipherable under UV light. This fluorescent mark comprises a substrate containing optical brightening agents, and a first dot design printed as an image upon the substrate. The first dot design has as a characteristic, the property of strongly suppressing substrate fluorescence. A second dot design having a property of providing a differing level of substrate fluorescence suppression from that of the first dot design such that when rendered in close spatial proximity with the first dot design image print, the resultant image rendered substrate suitably exposed to an ultra-violet light source, will yield a discernable image evident as a fluorescent mark.
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