FIELD: printing.
SUBSTANCE: security feature is proposed to protect valuable documents against forgery, having a plurality of microcapsules each of which has a wall and each of which contains a liquid medium in which several magnetic particles are distributed, which are arranged movably in the liquid medium with the ability to change their position inside the microcapsule by influencing with the magnetic field and which are made with the ability of their ordering in the microcapsule to form a diffraction regular structure by them.
EFFECT: proposed invention increases the degree of protection of the document against forgery.
15 cl, 5 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| MICROCAPSULE WITH LIQUID CRYSTAL | 2010 |
|
RU2537610C2 |
| PROTECTIVE ELEMENT CONTAINING MAGNETIC FLUID MEDIUM | 2010 |
|
RU2497198C2 |
| PROTECTIVE ELEMENT | 2009 |
|
RU2490140C2 |
| PROTECTING VALUABLE DOCUMENTS FROM FORGERY USING PROTECTIVE SUBSTANCES | 2006 |
|
RU2449363C2 |
| THERMOLUMINESCENT AND SUPERPARAMAGNETIC COMPOSITE PARTICLE AND MARKING CONTAINING THEREOF | 2016 |
|
RU2712685C2 |
| PROTECTIVE ELEMENT WITH OPTICALLY VARIABLE SURFACE PATTERN | 2011 |
|
RU2582161C2 |
| LIQUID CRYSTAL-BASED PIEZOCHROMIC SECURITY ELEMENT | 2010 |
|
RU2536665C2 |
| PROTECTIVE ELEMENT WITH THIN-LAYER ELEMENT | 2004 |
|
RU2344048C2 |
| COMPOSITE MARK | 2008 |
|
RU2431193C2 |
| ANTI-DECEPTION PAPER | 2003 |
|
RU2338646C2 |
