APPARATUS FOR PREVENTING COUNTERFEITING AND ALTERATION

摘要

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.

主权项

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 includes the magnetically responsive substance container, and wherein the movable part is configured to move the magnetically responsive substance container to a region where the magnetic field generated by the magnetic field generator is applied, and to change at least one of an intensity, a direction and a pattern of the magnetic field applied to the magnetically responsive substance such that the magnetically responsive substance container displays the indication state of the magnetically responsive substance, wherein the indication state of the magnetically responsive substance is specific to the magnetic field generator based on the magnetic field generated by the magnetic field generator, wherein the magnetically responsive substance container is disposed along a circumference of the movable part, wherein as the movable part or the magnetic field generator is rotated, a preset color or light transmittance is indicated along a preset pattern.