As described above, one or more aspects of the present disclosure provide articles having structural color, and methods of making articles having structural color. The present disclosure provides for articles that exhibit structural colors through the use of an optical element having one or more reflective layers, where structural colors are visible colors produced, at least in part, through optical effects (e.g., through scattering, refraction, reflection, interference, and/or diffraction of visible wavelengths of light).

The present invention is directed to obtaining an object having an anisotropic reflection characteristic without using a lenticular lens. A print product including a print medium on which a repetitive structure of projected portions and recessed portions is formed out of image forming materials including a color material includes a first layer formed on surfaces of the projected portions out of a first color material among the image forming materials, and a second layer formed on the recessed portions out of a second color material different from the first color material, wherein the projected portions have a height to occlude part of the second layer when observed at an angle different from an angle formed by a normal to a surface of the print medium.

The present invention is directed to obtaining an object having an anisotropic reflection characteristic without using a lenticular lens. A print product including a print medium on which a repetitive structure of projected portions and recessed portions is formed out of image forming materials including a color material includes a first layer formed on surfaces of the projected portions out of a first color material among the image forming materials, and a second layer formed on the recessed portions out of a second color material different from the first color material, wherein the projected portions have a height to occlude part of the second layer when observed at an angle different from an angle formed by a normal to a surface of the print medium.

A poster board whose central region is thicker than its peripheral region. The peripheral region having a reflective and refractive surface that provides iridescent color hues within a rainbow spectrum. The reflective and refractive surface may contain a holographic pattern of geometric shapes of different sizes and shapes. The reflective and refractive surface may give rise to spaced apart bands with each of the bands containing the rainbow spectrum of color hues.

A poster board whose central region is thicker than its peripheral region. The peripheral region having a reflective and refractive surface that provides iridescent color hues within a rainbow spectrum. The reflective and refractive surface may contain a holographic pattern of geometric shapes of different sizes and shapes. The reflective and refractive surface may give rise to spaced apart bands with each of the bands containing the rainbow spectrum of color hues.

The present disclosure relates to a decoration element comprising a light reflective layer; and a color developing layer comprising a light absorbing layer provided on the light reflective layer, wherein the light absorbing layer comprises two or more points with different thicknesses.

The present disclosure relates to a decoration element comprising a light reflective layer; and a color developing layer comprising a light absorbing layer provided on the light reflective layer, wherein the light absorbing layer comprises two or more points with different thicknesses.

The present disclosure relates to a decoration member comprising: a color expression layer comprising a light reflection layer and a light absorption layer provided on the light reflection layer; and a substrate provided on one surface of the color expression layer, in which the light absorption layer comprises a copper nickel oxide (Cu.sub.aNi.sub.bO.sub.x).

This specification relates to a decoration member including: a substrate; and a decoration layer provided on the substrate in which there are one or more combinations of viewing angles ? and ? in which a contrast parameter C.sub.n represented by Equation 1 is 0.1 or more.

The present invention is directed to obtaining an object having an anisotropic reflection characteristic without using a lenticular lens. A print product including a print medium on which a repetitive structure of projected portions and recessed portions is formed out of image forming materials including a color material includes a first layer formed on surfaces of the projected portions out of a first color material among the image forming materials, and a second layer formed on the recessed portions out of a second color material different from the first color material, wherein the projected portions have a height to occlude part of the second layer when observed at an angle different from an angle formed by a normal to a surface of the print medium.