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US 12,662,602 B2Granted
Ink jet ink composition and recording method
AssigneeSeiko Epson Corporation
InventorsSena Gozu, Kenta Uchida
Life of this patent
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Abstract
An ink jet ink composition functioning as a water-based magenta ink includes an azo-based pigment and a 1,2-alkanediol having 4 to 8 carbon atoms. In the ink jet ink composition described above, the azo-based pigment has a volume average particle diameter D50 of 110 nm or less, and a content of the 1,2-alkanediol having 4 to 8 carbon atoms with respect to a total mass of the composition is 3.5 percent by mass or less.
Claims9
A recording method comprising:
- an ink adhesion step of ejecting an ink jet ink composition from an ink jet head so as to be adhered to a recording medium,
- wherein the recording medium is regular paper;
- and
- the ink jet ink composition is a water-based magenta ink, including:
- an azo-based pigment;
- and
- a 1,2-alkanediol having 4 to 8 carbon atoms,
- wherein the azo-based pigment has a volume average particle diameter D50 of 110 nm or less,
- the azo-based pigment includes C.I. Pigment Red 150,
- a content of the C.I. Pigment Red 150 with respect to a total mass of the ink jet ink composition is 5 to 10% by mass, and
- a content of the 1,2-alkanediol having 4 to 8 carbon atoms with respect to a total mass of the composition is 1.5 to 2.5 percent by mass
- the ink jet ink composition includes Olfine E1010 and Surfynol 104, and
- a maximum adhesion amount of the ink jet ink composition to the recording medium in the ink adhesion step is 6 mg/inch2 or less.
10 more elements
Dependencies are inferred from the claim text.