Ink composition suitable for ink jet recording
AssigneeSeiko Epson Corporation
InventorsYukari Sano, Junko Takatsuna, Kazuaki Watanabe, Kiyohiko Takemoto
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Abstract
An ink composition is provided which, when used for ink jet recording, does not clog a recording head and provides a high-quality print and, at the same time, has high storage stability. The ink composition comprises a pigment, a dispersant, and water, the dispersant being a polymeric dispersant having a carboxyl group, the ink composition further comprising a hydroxide of an alkali metal and an alcoholamine having at least one hydroxyl group.
Claims15
An ink composition comprising a pigment, a dispersant, and water,
- the dispersant being a polymeric dispersant having a carboxyl group,
- the ink composition further comprising
- a hydroxide of an alkali metal and
- an alcoholamine having at least one hydroxyl group.
An ink composition comprising a pigment, a polymeric dispersant having a carboxyl group, a hydroxide of an alkali metal, an alcoholamine, water and, optionally, other components, said pigment being present in the composition in an mount of about 0.5 to 25% by weight, said dispersant being present in the composition in an amount such that the ratio of the pigment to the dispersant is in a range of 1:0.06 to 1:3, the hydroxide of the alkali metal being present in the composition in an amount of from 0.1 to 1% by weight, the alcoholamine being present in the composition in an amount of from 0.1 to 2% by weight, and the water and optional other components making up the balance of the composition.
Dependencies are inferred from the claim text.