Infrared-light-transmitting ink of dark color, and infrared-light-reflecting sheet obtained using same
AssigneeDai Nippon Printing Co., Ltd.
InventorsNaoto Yamanaka, Hitoshi Nishikawa, Keita Arihara
Life of this patent
Estimating the term…
Abstract
In order to satisfy the demand of consumers regarding design attractiveness, an infrared-light-transmitting dark color ink is provided, the ink having a black appearance and attaining high design attractiveness and, despite this, having sufficient infrared-light-transmitting property. The infrared-light-transmitting dark color ink transmits near infrared light having wavelengths of 750-1,500 nm, and comprises a resin component and a pigment component that comprises both a brown pigment, e.g., a benzimidazolone pigment, and a phthalocyanine pigment.
Claims2
1-14. (canceled)
An infrared-light-reflecting sheet comprising an infrared-light-transmitting dark color layer and a reflective layer,
- wherein the thickness of infrared-light-transmitting dark color layer is about 15 μm or less, and
- a color difference (ΔE*ab) between a color tone of the infrared-light-reflecting sheet and a color tone of carbon black as measured under conditions of a D65 light source and a 10° view angle according to JIS-Z 8722 is about 10 or less.
Dependencies are inferred from the claim text.