Magenta ink for inkjet
AssigneesToyo Ink Sc Holdings Co., Ltd., Toyo Ink Co., Ltd.
InventorsMasahiro SUGIHARA, Atsushi YODA, Yoshihito SUZUKI, Kazuhiro JONAI
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Abstract
The invention provides a magenta ink for inkjet which yields distinct images having high gloss and no density irregularities or voids upon inkjet printing onto low-absorption substrates, exhibits excellent discharge stability after long standby periods, and can provide excellent drying properties even during high-speed printing; and also provides an ink set that can suppress mixed color bleeding and achieve superior color reproducibility.
Claims13
A magenta ink for inkjet comprising at least a pigment, a water-soluble organic solvent (A), a surfactant (B) and water, wherein
- the pigment comprises at least one azo pigment in an amount of 1 to 10% by weight relative to a total weight of the magenta ink for inkjet,
- the water-soluble organic solvent (A) comprises a water-soluble organic solvent (A-1) having a static surface tension at 25° C. of 22 to 32 mN/m and an HLB value of 2.0 to 8.0 and having at least one hydroxyl group in an amount of 5 to 50% by weight relative to a total weight of the magenta ink for inkjet, and
- the surfactant (B) comprises a surfactant (B-1) having an HLB value of 1.5 to 8.0.
Dependencies are inferred from the claim text.