Apparatus for preventing counterfeiting and alteration

Abstract

An apparatus for preventing counterfeiting and alteration according to the present invention includes a magnetic changeable substance carrier part containing a magnetic changeable substance to vary reflected or transmitted light rays as an applied magnetic field is varied; a magnetic field generation part for generating a magnetic field applied to the magnetic changeable substance; and a moveable part for varying at least one of the intensity, direction and pattern of the magnetic field applied to the magnetic changeable substance according to an externally applied stimulus so as to change the appearance of the magnetic changeable substance.

1 . A counterfeit and alteration prevention apparatus comprising:
 a magnetically responsive substance container to contain a magnetically responsive substance in which a reflected light or a transmitted light is changed when a magnetic field applied thereto is changed;   a magnetic field generator to generate a magnetic field capable of being applied to the magnetically responsive substance; and   a movable part to perform a function of changing an indication state of the magnetically responsive substance, wherein the movable part is moved, rotated or deformed in response to a given external stimulus to change at least one of an intensity, a direction and a pattern of the magnetic field generated by the magnetic field generator and applied to the magnetically responsive substance.   
     
     
         2 . (canceled) 
     
     
         3 . The counterfeit and alteration prevention apparatus of  claim 1 , wherein the movable part is moved, rotated or deformed in response to the given external stimulus to move the magnetically responsive substance container to a region where the magnetic field generated by the magnetic field generator is applied. 
     
     
         4 . The counterfeit and alteration prevention apparatus of  claim 1 , wherein the movable part is moved, rotated or deformed in response to the given external stimulus to move the magnetically responsive substance contained in the magnetically responsive substance container to a region where the magnetic field generated by the magnetic field generator is applied. 
     
     
         5 . The counterfeit and alteration prevention apparatus of  claim 1 , wherein the movable part is moved, rotated or deformed in response to the given external stimulus to move the magnetic field generator to a region where a magnetic field is capable of being applied to the magnetically responsive substance. 
     
     
         6 . The counterfeit and alteration prevention apparatus of  claim 1 , wherein at least one of the magnetically responsive substance container, the magnetic field generator and the movable part is irreversibly fractured by the external stimulus, and
 when at least one of the magnetically responsive substance container, the magnetic field generator and the movable part is irreversibly fractured, the reflected light and the transmitted light of the magnetically responsive substance are not changed even if the magnetic field is applied.   
     
     
         7 . The counterfeit and alteration prevention apparatus of  claim 1 , wherein the magnetically responsive substance is set to reflect light having a preset wavelength or transmit light at a preset transmittance as the magnetic field is applied thereto. 
     
     
         8 . The counterfeit and alteration prevention apparatus of  claim 1 , wherein at least one of the magnetically responsive substance container, the magnetic field generator and the movable part is configured in the form of at least one of a container plug, a tag, a card, a film, and a sticker. 
     
     
         9 . The counterfeit and alteration prevention apparatus of  claim 1 , wherein the magnetically responsive substance includes a solution in which magnetic particles are dispersed, and intervals between or positions of the magnetic particles are changed according to a change of the magnetic field applied thereto. 
     
     
         10 . The counterfeit and alteration prevention apparatus of  claim 1 , wherein the magnetically responsive substance includes at least one of a fluorescent material, a phosphorescent material, a quantum dot material, a temperature indicating material, and an optically variable pigment (OVP) material. 
     
     
         11 . The counterfeit and alteration prevention apparatus of  claim 1 , wherein the magnetically responsive substance is encapsulated into a capsule made of a light-transmissive material. 
     
     
         12 . The counterfeit and alteration prevention apparatus of  claim 1 , further comprising an additional counterfeit and alteration prevention means using at least one of hologram, radio frequency identification (RFID) and biometric information recognition.