Riso Kagaku Corporation

Yoshiaki Ishimaru

Akiko Hayashi

Yoshifumi Watanabe

Takashi Saito

Sayako Nakao

An inkjet aqueous ink that prevents paper deformation and exhibits superior print quality and latency. The inkjet aqueous ink contains not less than 15% by mass and not more than 40% by mass of a polyglycerol having an average polymerization degree of 4 or greater, not less than 5% by mass and not more than 20% by mass of at least one of 1,3-propanediol and diethylene glycol monoethyl ether, and not less than 40% by mass and not more than 60% by mass of water.

Inkjet aqueous ink and printed item

An aqueous ink for an inkjet is provided, including: a pigment; a water-soluble organic solvent A including at least one of a diglycerol and a polyglycerol; a water-soluble organic solvent B including a polyethylene glycol monoalkyl ether represented by formula (1): RO&#x2014;(CHCHO)&#x2014;H where R represents an alkyl group having from 4 to 6 carbon atoms, and n represents an integer from 4 to 6; and water

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Wakaguri, Japan

Yoshiaki Ishimaru