To provide an inkjet ink capable of preventing deterioration (fusion) of a liquid-contacting surface of a heating part, even when printing is continuously conducted for a long period by using the inkjet ink which contains a coloring material having a buffer area in a working range of the ink, and further capable of preventing occurrence of breakage of a wire in wiring for applying a voltage to the heating part.
This inkjet ink is used for an inkjet recording device which is equipped with a recording head having the liquid-contacting surface of the heating part containing a metal and/or a metal oxide, and further the ink has a content (mass %) of the coloring material of ≥3 mass % based on a total mass of the inkjet ink, wherein the coloring material comprises such a coloring material as to have the buffer area in the working range of the ink and contains an alkylene oxide adduct and/or glycol ethers of butynediols.
SATO SHINICHI
YOSHIZAWA JUN
AIKAWA YOSHIHIDE
NAKAMURA KUNIHIKO
JINNO MASANORI
Yuichi Uchio
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