To cause the appearance of a decorative layer formed on the surface of a product by using a decorative sheet to change with time to prevent consumer's getting bored with the appearance of the produce throughout the useful life longevity.
The decorative sheet has a decorative layer fixable to a target product on the surface of a substrate sheet. The decorative layer has a pattern layer and a coloring layer. The pattern layer is superimposed on the coloring layer and arranged outside the coloring layer. The pattern layer is transparent and invisible when the decorative layer is fixed to the target product, and then, a pattern corresponding to the shape of the pattern layer becomes visible with time when a part of the coloring layer not superimposed on the pattern fades selectively.
YOSHIKAWA KUMIKO
KITAMURA SHINICHI
Takuji Yamada
Masaishi Nishishita