Ink composition containing fluorescent component and method of tagging articles therewith
First Claim
1. An ink composition which comprises(i) a fluorescent dye;
- (ii) a non-fluorescing ink which masks the presence of the fluorescent dye so that fluorescence is not observed;
(iii) a solvent for the fluorescent dye which permits the fluorescent dye to impregnate the surface of a substrate, while allowing the non-fluorescing ink to remain substantially on the surface of the substrate.
1 Assignment
0 Petitions
Accused Products
Abstract
Provided is an ink composition which comprises a fluorescent dye. The ink composition is useful in tagging for subsequent identification various articles having a polymeric or porous organic or inorganic surface. The ink composition comprises a non-fluorescent ink such as a black ink, a fluorescent dye, and a solvent for the fluorescent dye, which solvent swells and impregnates the surface of the article thereby permitting impregnation of the article by the fluorescent dye. The resulting tagged article has a printed surface with a fluorescent dye impregnated within the article directly beneath the printing on the surface. Identification of the article can then take place by removing printed material, and subjecting the article to UV irradiation. Observing a bright fluorescent color characteristic of the fluorescent dye used confirms the authenticity of the article.
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Citations
14 Claims
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1. An ink composition which comprises
(i) a fluorescent dye; -
(ii) a non-fluorescing ink which masks the presence of the fluorescent dye so that fluorescence is not observed; (iii) a solvent for the fluorescent dye which permits the fluorescent dye to impregnate the surface of a substrate, while allowing the non-fluorescing ink to remain substantially on the surface of the substrate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification