Machine readable water based red fluorescent ink compositions

Details Machine readable water based red fluorescent ink compositions Machine readable water based red fluorescent ink compositions

C - Chemistry, Metallurgy

09

D

C09D 11/00 (2006.01)

Patent

CA 2376109

An ink composition suitable for printing machine readable indicia on a substrate with an ink jet printing device is disclosed. The disclosed ink composition comprises water, a water soluble resin, a red fluorescent colorant material mixture comprising C.I. Basic yellow 40 dye, C.I. Basic Red 1 dye, and C.I. Basic Violet 11:1 dye, and a blue colorant material comprising C.I. Acid Blue 9. In the preferred embodiments of the ink composition, the dyes in the red fluorescent colorant material mixture are present in a weight ratio of approximately 1.12 to 1.36 to 1, respectively, and the weight ratio of the red fluorescent colorant material mixture to the blue colorant material is in the range of about 3.8 to 1 to about 46 to 1.

Composition d'encre pouvant être utilisée pour imprimer des informations lisibles par machine sur un substrat à l'aide d'une imprimante à jet d'encre. La composition d'encre selon la présente invention comporte de l'eau, une résine hydrosoluble, un mélange rouge fluorescent de matières colorantes contenant un colorant jaune basique CI 40, un colorant rouge basique CI 1 et un colorant violet basique CI 11:1, ainsi qu'une matière colorante bleue contenant du bleu acide CI 9. Dans les modes de réalisation préférés de la présente invention, les colorants dans le mélange rouge fluorescent de matières colorantes sont présents dans un rapport en poids d'environ 1,12 à 1,36 à 1 respectivement et le rapport pondéral du mélange rouge fluorescent de matières colorantes à la matière colorante bleue se situe entre environ 3,8 à 1 et environ 46 à 1.

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