| 摘要 |
A security pattern formed by a hologram and a color shifting ink is provided to reduce security cost while maintaining the same security function as that of second security, provide security function in which a hologram effect and a color shifting effect are combined, and implement a simple protect method of an object. A security device formed by a hologram and a color shifting ink comprises the following steps of: coating an object surface by optical variable ink; and jointing a patterned structure to the object by adhesive materials in the optical variable ink. An image with optical variable background is formed when light is projected in a label by projecting light through the patterned structure. The patterned structure is a diffractive structure and provides optical variable effect provided by optical variable ink and diffractive effect provided by the diffractive structure. |
