COLORING FORGERY PREVENTION STRUCTURE AND COLORING FORGERY PREVENTION MEDIUM

摘要

A forgery prevention structure (41) comprises a relief forming layer (42), a first reflection layer (43), a functional thin film layer (44), a second reflection layer (45), and a protection layer (46), which are layered in this order. The relief forming layer (42) has, on one side, a relief structure comprising a first relief (47) and a second relief (48), with a micro uneven pattern which perform an effect of diffracting, scattering, absorbing, and polarizing/separating a wavelength range of at least a part of visible light. A surface of the first relief has a smaller uneven surface area in comparison with a surface of the second relief. The first reflection layer and the functional thin film layer are provided along the uneven surfaces of the first and second reliefs of the relief structure. The second reflection layer and the protection layer are provided so as to cover only a surface of the functional thin film layer of the first relief.