FIELD: textiles, paper.
SUBSTANCE: sheet comprises a surface of the front side and the surface of the back side and at least one water mark or pseudo-water mark. And at least a part of the said water mark or pseudo-water mark is visible in transmitted light only on one side of the said sheet.
EFFECT: providing means of protection against counterfeit of valuable documents and sheets of paper, and these means can be easily seen even by nonexpert.
33 cl, 11 ex, 13 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| PROTECTED STRUCTURE CONTAINING MICROELECTRONIC DEVICE, AND WATERMARK OR ITS IMITATION | 2009 |
|
RU2511021C9 |
| ELEMENT HAVING AT LEAST TWO MICROELECTRONIC NON-CONTACT DATA COMMUNICATION DEVICES | 2009 |
|
RU2470370C1 |
| MULTI-LAYER COMPOSITE ELEMENT BASED ON PAPER AND VALUABLE COUNTERFEIT-PROOF DOCUMENT | 2014 |
|
RU2561413C1 |
| BASIS FOR PRODUCTION OF VALUABLE DOCUMENT, METHOD OF ITS MANUFACTURING AND VALUABLE DOCUMENT WITH SUCH BASIS | 2011 |
|
RU2525793C2 |
| SHEET WITH COUNTERFEIT PROTECTION COMPRISING COEXTRUSION SUBSTRATE | 2008 |
|
RU2508990C2 |
| SUBSTRATE FOR OBTAINING SECURITY PAPERS OR COUNTERFEIT-PROOF DOCUMENTS | 2021 |
|
RU2814380C1 |
| SECURITY PAPER (OPTIONS) AND METHODS FOR MANUFACTURE THEREOF (OPTIONS) | 2015 |
|
RU2683653C2 |
| MULTILAYER SECURED PAPER | 2006 |
|
RU2401208C2 |
| METHOD OF MAKING THROUGH HOLES IN MULTILAYER SECURITY PAPER | 2010 |
|
RU2433217C1 |
| SECURITY SHEET OR DOCUMENT HAVING ONE OR MORE ENHANCED WATERMARKS | 2014 |
|
RU2680329C9 |
