General Company Limited

Hidehiro Takemoto

Kozo Isobe

The present invention provides an inkjet ink that contains a metal complex dye, a polyoxyethylene based compound with which a number average molecular weight Mn is not less than 200, a tackifier with which a hydroxyl value is 30 to 70 mgKOH/g, a first solvent of at least one type selected from a group consisting of ketones, ethers, and esters and with which an SP value is less than 11, and a second solvent being an alcohol including at least an alcohol with 1 to 3 carbon atoms and with which the SP value is not less than 11 and is solvent based and does not contain (excludes) water, is unlikely to cause cogation, is also excellent in intermittent printing performance, and yet enables a character of excellent fixing property and abrasion resistance to be printed on a surface of a printing object with a non-absorbing property.

Inkjet ink

An inkjet ink includes a binder resin, a tackifier, a colorant, and an organic solvent. The binder resin is a phenol resin having a softening point in a range from 70 degrees Celsius or more to 125 degrees Celsius or less. The colorant is a dye. The tackifier is a terpene phenol resin whose hydroxyl value is 10 to 45 mgKOH/g.

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Osaka, Japan

Hidehiro Takemoto