SECURITY ELEMENT WITH A COLOR-SHIFT EFFECT
The invention relates to a security element for security papers, valuable documents and the like, comprising a thin-layer element (25) with a color-shift effect, said element being made of a reflecting layer (24), an absorbing layer (28) and an intermediate layer (26), arranged between the reflecting layer (24) and the absorbing layer (28). According to said invention, the intermediate layer (26) is formed by a printed layer, the thickness of which can be modified in a locally irreversible manner, after printing, by exposure to external influences, in particular extension, electromagnetic radiation, electron-beam treatment or pressure and/or temperature.