Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Including a second component containing structurally defined...
Reexamination Certificate
1998-08-07
2001-06-19
Thibodeau, Paul (Department: 1773)
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Including a second component containing structurally defined...
C428S212000, C428S330000, C428S372000, C442S362000, C442S365000
Reexamination Certificate
active
06248436
ABSTRACT:
BACKGROUND OF THE INVENTION
This invention relates to a structure for use in fabrics or paints to exhibit a color produced by reflection, interference and/or scattering of a light incident thereon.
In order to meet recent consumers' needs for multiform and high-grade products, color exhibition structures have been developed which can exhibit colors having a high degree of chroma to provide grace and deluxe appearance. For example, Japanese Patent Kokai No. 1-139803 discloses a covered type complex fiber made of two or more kinds of resin having different refractive indexes to provide a luster like a pearl. The Society of textile machinery (Sen-i Kikai Gakkai) journal, 1989, Vol. 42, No. 2, page 55 and Vol. 42, No. 10, page 160 describes a color exhibition structure having a molecular orientation anisotropic polymer film sandwiched between two polarizing films. However, such color exhibition structures are not practical since they require fine fibers or chips difficult to be produced. Furthermore, it is very difficult to control the reflected dominant wavelength.
Japanese Patent Publication No. 63-64535 (Japanese Patent Kokai No. 59-223337) also discloses a color exhibition structure which exhibits a color produced by interference of a light incident thereon. However, it is very difficult to produce a desired color exhibit structure since no disclosure exists for the detailed specifications such as the shape and thickness of the color exhibition structure and the refractive indexes of the materials of the color exhibition structure.
SUMMARY OF THE INVENTION
It is a main object of the invention to provide an improved color exhibition structure which can exhibit a desired vivid color within a visible light range.
There is provided, in accordance with the invention, a structure for exhibiting a color produced by reflection and scattering of a light incident thereon. The color has a wavelength within a visible light range. The color exhibition structure comprises
a transparent substance having a first refractive index, and a number of minute granular substances dispersed in the transparent substance. The granular substances have a second refractive index greater than the first refractive index.
In another aspect of the invention, there is provided a structure for exhibiting a color produced by reflection, interference and scattering of a light incident thereon. The color has a wavelength within a visible light range. The color exhibition structure comprises a plurality of first layers made of a material having a first refractive index, and a plurality of second layers made of a material having a second refractive index different from the first refractive index. The first and second layers are laminated alternatively. The color exhibition structure also includes a number of minute granular substances dispersed in the first and second layers. The granular substances have a third refractive index different from the first and second refractive indexes.
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The Society of Textile Machinery (Seni Kikai Gakkaisi) Journal, 1989, vol. 42, No. 2, pp. 55-65.
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Kumazawa Kinya
Tabata Hiroshi
McDermott & Will & Emery
Nissan Motor Co,. Ltd.
Rickman Holly C.
Thibodeau Paul
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