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Machine translation
1. (WO1981003508) PAPER SECURITY WITH AUTHENTICITY MARK OF LUMINESCENT MATERIAL AND UTILIZATION METHOD THEREOF
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1981/003508    International Application No.:    PCT/DE1981/000079
Publication Date: 10.12.1981 International Filing Date: 29.05.1981
IPC:
B41M 3/14 (2006.01), D21H 21/48 (2006.01), G06K 19/14 (2006.01), G07D 7/12 (2006.01)
Applicants:
Inventors:
Priority Data:
3020652 30.05.1980 DE
Title (EN) PAPER SECURITY WITH AUTHENTICITY MARK OF LUMINESCENT MATERIAL AND UTILIZATION METHOD THEREOF
(FR) PAPIER-VALEUR AVEC MARQUE D"AUTHENTICITE EN MATIERE LUMINESCENTE ET PROCEDE POUR SON UTILISATION
Abstract: front page image
(EN)Paper security with luminescent authenticity mark overprinted or incorporated. The authenticity mark used is made of a luminescent substance and one or a plurality of substances, for example colorants by means of which the emission and/or the excitation spectrum of the luminescent substance are modified in a recognizable way. The colorant may be mixed to the luminescent substance or may cover one layer of the luminescent substance, or yet may cover powder-like particles of the luminescent substance. To check the authenticity of the document, the emission spectrum of the luminescent substance is not used but the change obtained in the emission spectrum, respectively the excitation spectrum.
(FR)Il s"agit de papier-valeur avec marque d"authenticite luminescente surimprimee ou incorporee. La marque d"authenticite employee consiste en une substance luminescente et une ou plusieurs substances par exemple des colorants a l"aide desquels l"emission et/ou le spectre d"excitation de la substance luminescente sont modifies d"une maniere reconnaissable. Le colorant peut etre melange a la substance luminescente ou recouvrir une couche de la substance luminescente, ou peut encore revetir des particules de la substance luminescente sous forme de poudre. Pour verifier l"authenticite de document, on n"utilise pas le spectre d"emission de la substance luminescente mais le changement obtenu du spectre d"emission, respectivement d"excitation.
Designated States:
Publication Language: German (DE)
Filing Language: German (DE)