Fujitsu Corporation

Fujitsu Isotec Limited

Muneo Maetani

Chiaki Sekioka

Yoichi Hirasawa

A latent image ink composition including an organic fluorescent substance which responds to an excitation wavelength range of 600-850 nm and emits fluorescence in a wavelength range of 651-900 nm, a quencher, and a curing resin composition, prints which comprise a substrate and a latent image formed from the ink composition on the substrate, and a latent image data deciphering apparatus and latent image data deciphering method, provided with an emitting element for irradiating the prints with the excitation wavelength, a receiving element for detecting the emission of fluorescence in the wavelength range emitted from the cured ink of the print, and a computer processor for deciphering the detected emission of fluorescence against a standard value. Discrimination of the genuineness of articles can be accomplished reliably without the knowledge of third parties.

Latent image printing ink composition, prints containing latent images recorded with the ink composition, and latent image data-based deciphering method and latent image data deciphering device

Growing community of inventors

Inagi, Japan

Muneo Maetani