FIELD: printing.
SUBSTANCE: security element is proposed, which has at least a first luminophor and a second luminophor which are characterised by the presence of substantially equal common band of emission. Each of the two luminophors is characterised by the presence of at least one excitation band that leads to emission of radiation in the common band of emission, i.e. both luminophors are selected so that they are at different excitation capable to emit radiation on at least one common wavelength, and for each of both luminophors there is at least one wavelength on which the excitation is possible, accordingly, of only one luminophor, and excitation of the other is impossible.
EFFECT: proposed protective element increases the degree of protection against counterfeiting of valuable documents.
18 cl, 24 dwg, 2 tbl, 4 ex
| Title | Year | Author | Number |
|---|---|---|---|
| IMPORTANT DOCUMENT | 2000 |
|
RU2232422C2 |
| AUTHENTICITY FEATURES IN THE FORM OF LUMINOPHORS | 2007 |
|
RU2442696C2 |
| PAPER PROTECTED AGAINST SIMULATION, PROVIDED WITH CODING OF LUMINESCENT BLENDED FIBERS | 2000 |
|
RU2258109C2 |
| VALUABLE DOCUMENT WITH LUMINESCENT PROPERTIES | 2005 |
|
RU2388054C9 |
| VALUABLE DOCUMENT WITH COUNTERFEIT PROTECTION AND METHOD FOR DETECTION OF ITS AUTHENTICITY | 2008 |
|
RU2379195C1 |
| VALUABLE DOCUMENT, METHOD OF ITS MANUFACTURING, AND ALSO METHOD AND DEVICE FOR VERIFICATION OF VALUABLE DOCUMENTS | 2006 |
|
RU2415756C2 |
| COUNTERFEIT-PROOF VALUABLE DOCUMENT AND METHOD FOR DETERMINING ITS AUTHENTICITY | 2012 |
|
RU2526211C2 |
| IDENTITY FEATURE IN FORM OF LUMINOPHORE | 2007 |
|
RU2460141C2 |
| IMPORTANT DOCUMENT | 2004 |
|
RU2365511C2 |
| METHOD OF MARKING ANTI-COUNTERFEIT OBJECT, METHOD OF IDENTIFYING MARKING AND MARKING IDENTIFICATION DEVICE | 2019 |
|
RU2720464C1 |
