| 摘要 |
PROBLEM TO BE SOLVED: To provide a designing method of a light-coherent multilayer-film-covered powder which has a plurality of reflection peaks and a plurality of reflectances in the visible light region, reproduces a desired bright color, and is weather-resistant; a production method thereof; and a light-coherent multilayer-film-covered powder. SOLUTION: The light-coherent multilayer-film-covered powder has on substrate particles at least two layers different in reflectance from each other, and has a plurality of reflection peaks in the visible light region; hence, it displays a specific color under a specific light source. In the designing method of the light-coherent multilayer-film-covered powder, the substance of the substrate particles bringing about a desired function, the light source, and the desired color are selected; and the substance and thickness of each covering film and the film formation order are looked for in order to yield a multilayer-film-covered powder having such positions of the plurality of reflection peaks (wavelengths) and their heights (reflectances) of the reflection peaks as to show the desired color. COPYRIGHT: (C)2005,JPO&NCIPI
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