To provide a magnetic pigment flakes having a special visual effect, and to provide an image formation body that shines in rainbow using the same and has a special visual effect that draws a line to a conventional OVD image, and in which a forgery prevention effect is high.
A pigment flake comprises disposing: a convexoconcave pattern formation layer including two or more concavities or salients aligned in a one-dimensional or two-dimensional manner or both; and a light reflectivity coating layer that is coated so as to track the convexoconcave pattern, in at least one layer, and a length of a pattern cycle of the convexoconcave pattern formation layer is at most a wave length of visible light in a near ultraviolet region, a ratio of depth or height to a length of a cycle is at least half of the cycle, at least one layer comprises having a magnetic property, a magnetic field is applied, thereby orientation is performed along a line of the magnetic field.
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Hironobu Onda