Latent image printing ink composition, prints containing...

Details Latent image printing ink composition, prints containing... Latent image printing ink composition, prints containing...

2005-05-31

2005-05-31

Sample, David (Department: 1755)

Compositions: coating or plastic

Coating or plastic compositions

Marking

C106S031640, C106S031410, C106S031720

Reexamination Certificate

active

06899752

ABSTRACT:
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.

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