Ink and ink set for ink jet printing and method of ink jet...

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

Reexamination Certificate

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C106S031460, C106S031480, C106S031500, C106S031590

Reexamination Certificate

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10503894

ABSTRACT:
An inkjet recording ink composition comprising an aqueous medium having dissolved and/or dispersed therein at least one dye, wherein at least one betaine-type surfactant is contained in the ink composition. The dye is preferably a magenta dye having an azo structure or a cyanine dye having a phthalocyanine structure. The inkjet recording ink composition is excellent in ejection property, light fastness, heat fastness and oxidation resistance and causing less dye bleeding.

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Takeshi Amari, Ink Jet Printer Gijutsu to Zairyo Kabushiki Kaisha CMC, Jul. 31, 1998, pp. 206 to 208.
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