Aqueous ink composition, ink jet recording method, and recorded matter
AssigneeSeiko Epson Corporation
InventorsKatsuko Aoki, Hiroshi Mukai
Life of this patent
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Abstract
An ink jet recording method includes ejecting droplets of an aqueous ink composition from an ink jet recording apparatus onto a non-ink-absorbing or low-ink-absorbing recording medium, and heating the recording medium to 40° C. or more to dry the aqueous ink composition deposited on the recording medium, wherein the first solvent content (W1) is 3% by mass or more and 6% by mass or less of the mass of the aqueous ink composition, the ratio (W2/W1) of the second solvent content (W2) to the first solvent content (W1) is one or more, and the ratio [(W2+W3)/(W1)] of the total (W2+W3) of the second solvent content (W2) and the third solvent content (W3) to the first solvent content (W1) is three or more.
Claims8
An ink jet recording method comprising:
- ejecting droplets of an aqueous ink composition from an ink jet recording apparatus onto a non-ink-absorbing or low-ink-absorbing recording medium;
- and
- heating the recording medium to 40° C. or more to dry the aqueous ink composition deposited on the recording medium,
- wherein the aqueous ink composition contains a pigment containing C.I. pigment yellow 180,
- a first solvent containing at least one selected from 1,2-hexanediol and 1,2-pentanediol,
- a second solvent containing at least one selected from the group consisting of 2-pyrrolidone, N-methyl-2-pyrrolidone, N,N′-dimethylpropyleneurea, 1,3-dimethyl-2-imidazolidinone, tetramethylurea, dimethyl sulfoxide, and hexamethylphosphoric triamide, and
- a third solvent containing at least one selected from propylene glycol and 1,3-propanediol,
- the first solvent content (W1) is 3% by mass or more and 6% by mass or less of the mass of the aqueous ink composition,
- the ratio (W2/W1) of the second solvent content (W2) to the first solvent content (W1) is one or more, and
- the ratio [(W2+W3)/(W1)] of the total (W2+W3) of the second solvent content (W2) and the third solvent content (W3) to the first solvent content (W1) is three or more.
Dependencies are inferred from the claim text.