FIELD: physics, image processing.
SUBSTANCE: invention refers to securities authenticity detectors. Authenticity mark applied in the invention, contains luminescent labelling IR-emitting material preferably at wavelength 880 nm, more preferably exceeding approximately 1100 nm, the most preferably exceeding approximately 1200 nm, and IR-absorbing labelling material. Herewith IR-absorbing labelling material and/or luminescent labelling material make at least 30%, preferably 50%, of authenticity mark area.
EFFECT: higher level of counterfeit protection.
63 cl, 8 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| IMPORTANT DOCUMENT | 2004 |
|
RU2365511C2 |
| IMPORTANT DOCUMENT | 2004 |
|
RU2361744C2 |
| PRINTING CODE ALLOWING AUTOMATIC READING, DOCUMENT WITH SUCH A CODE AND METHOD FOR MANUFACTURING SUCH A CODE AND SUCH A DOCUMENT | 2002 |
|
RU2303287C2 |
| VALUABLE DOCUMENT WITH LUMINESCENT PROPERTIES | 2005 |
|
RU2388054C9 |
| CODING SYSTEM FOR VALUABLE DOCUMENTS | 2004 |
|
RU2376640C2 |
| SECURITY ELEMENT WITH COMPUTER-READABLE CODE | 2009 |
|
RU2527757C2 |
| IMPORTANT DOCUMENT AND PROTECTIVE DESIGNATION WITH MARKING SUBSTANCE | 2002 |
|
RU2305866C2 |
| PRINTED IMPORTANT DOCUMENT WITH LUMINESCENT AUTHENTICITY INDICATION | 1999 |
|
RU2191119C2 |
| PRINTED SECURITIES WITH LUMINESCENCING INDICATION OF AUTHENTICITY | 1999 |
|
RU2203186C2 |
| VALUABLE DOCUMENT | 1999 |
|
RU2203188C2 |
