| 摘要 |
The invention relates to a security element for increasing protection against the forgery of security documents, such as banknotes, value papers, identifications, credit cards, debit cards, or the like. The security element consists of a mixture of color-shift effect pigments and micro-encapsulated thermochromic liquid crystal pigments. According to the invention, the color-shift effect pigments are anisotropic interference pigments. According to the invention, the security element thus consists of a mixture of isotropic, micro-encapsulated thermochromic pigments with anisotropic interference pigments. |
