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US 11,434,386 B2Granted
Water-based ink for ink-jet recording
AssigneeBrother Kogyo Kabushiki Kaisha
InventorsSatoshi Okuda, Mitsunori Maeda, Yuka Tsuzaka
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Abstract
A water-based ink for ink-jet recording includes dyes and water. The dyes include a blue dye having a hue angle of 220° to 280°; a yellow dye having a hue angle of 70° to 120°; and a copper phthalocyanine dye. A mass ratio (C/B) of a content (C) of the copper phthalocyanine dye to a content (B) of the blue dye in an entire amount of the water-based ink is equal to or more than 0.5, and a total content of the dyes in the entire amount of the water-based ink is equal to or more than 6% by mass.
Claims18
A water-based ink for ink-jet recording comprising dyes and water, the dyes comprising:
- a blue dye having a hue angle of 220° to 280°;
- a yellow dye having a hue angle of 70° to 120°;
- and
- a copper phthalocyanine dye,
- wherein a mass ratio (C/B) of a content (C) of the copper phthalocyanine dye to a content (B) of the blue dye in an entire amount of the water-based ink is equal to or more than 0.5, and
- a total content of the dyes in the entire amount of the water-based ink is equal to or more than 6% by mass.
3 more elements
Dependencies are inferred from the claim text.