Compositions: coating or plastic – Coating or plastic compositions – Marking
Reexamination Certificate
2005-08-09
2005-08-09
Lorengo, J.A. (Department: 1755)
Compositions: coating or plastic
Coating or plastic compositions
Marking
C106S031600
Reexamination Certificate
active
06926764
ABSTRACT:
The invention relates to an ink set comprising a plurality of inks of a first and of a second group, having different colors. Inks of said first group comprise a visible colorant and an additional IR-absorbing compound (IR-taggant) which has an absorption peak at a predetermined wavelength in the near infrared. Inks of said second group comprise a visible colorant which has at the same time an infrared absorption peak at the same wavelength as that of the IR-taggant used in the inks of the first group. Preferred embodiment is a four-color process ink set comprising an IR feature.
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Bleikolm Anton
DeGott Pierre
Despland Claude-Alain
Müller Edgar
Faison Veronica F.
Lorengo J.A.
Shoemaker and Mattare
SICPA Holding S.A.
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