Inkjet inks containing azo pyrazolobenzopyrimidineone class...

Compositions: coating or plastic – Coating or plastic compositions – Marking

Reexamination Certificate

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Details

C106S031460, C106S031500, C106S031760, C106S031770, C106S031780, C347S100000

Reexamination Certificate

active

07608140

ABSTRACT:
The present invention relates to an aqueous ink comprising at least water, and a colorant of Formula 1wherein A is any substituted or unsubstituted aromatic or heteroaromatic moiety; R is hydrogen or any non-metallic group; R1 is hydrogen, or any substituted or unsubstituted aryl, alkenyl, alkynyl or alkyl group; R2 and R3 are hydrogen or any non-metallic group, and R2 and R3 can be joined to form a ring that may be aromatic, aliphatic or heterocyclic and may be further substituted; or a colorant of Formula 2:wherein R4 is hydrogen or any non-metallic group; n is an integer of 0-4; and, if n is 2-4, the R4 groups may be the same or different from each other, and a printing method for creating an image on an ink compatible substrate using colorants of Formula 1 or Formula 2.

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D.E. Bugner and C. Suminski, “Filtration and Reciprocity Effects on the Fade Rate of Inkjet Photographic Prints”, Proceedings of IS&T's NIP16: International Conference on Digital Printing Technologies, Vancouver, BC, Oct. 2000.

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