Ink composition, ink set and recording method

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

Reexamination Certificate

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C106S031480, C106S031500, C106S031580, C106S031590, C106S031760, C106S031770, C106S031780, C106S031860, C106S031890, C347S100000

Reexamination Certificate

active

07540910

ABSTRACT:
An ink composition includes: a coloring material having an azo group bound to a heterocyclic group; an aqueous medium; and at least one of an acetylene diol and an ethylene oxide adduct of the acetylene diol, wherein an average value of an addition molar number of the at least one of the acetylene diol and the ethylene oxide adduct of the acetylene diol is 0 or more and less than 4.

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patent: WO 03/066751 (2003-08-01), None

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