Aqueous inkjet ink, inkjet recording method, and inkjet recording device
An aqueous inkjet ink includes at least water, a coloring material, a water-soluble organic solvent component, a surfactant, and resin microparticles. The water-soluble organic solvent component includes a first monool-type solvent represented by R 1 O(CH 2 CH 2 O) m H in which R 1 represents a straight or branched alkyl group having 1 to 4 carbon atoms, and m represents an integer of 2 or 3, a second monool-type solvent represented by R 2 O(C 3 H 6 O) n H where R 2 represents a straight or branched alkyl group having 1 to 4 carbon atoms, and n represents an integer of 2 or 3, and a third monool-type solvent that is at least one selected from the group consisting of 3-methoxy-1-butanol and 3-methoxy-3-methyl-1-butanol. The content of the third monool-type solvent in the ink is about 8% by mass or greater and about 27% by mass or less. The content of the first monool-type solvent in the ink is about 0.5% by mass or greater and about 9% by mass or less. The content of the second monool-type solvent in the ink is about 0.5% by mass or greater and about 9% by mass or less. The content of the water-soluble organic solvent component in the ink is about 15% by mass or greater and about 42% by mass or less.
1. An aqueous inkjet ink comprising:
water;
a coloring material;
a water-soluble organic solvent component;
a surfactant; and
resin microparticles; wherein
the water-soluble organic solvent component includes a first monool solvent represented by R 1 O(CH 2 CH 2 O) m H in which R 1 represents a straight or branched alkyl group having 1 to 4 carbon atoms, and m represents an integer of 2 or 3; a second monool solvent represented by R 2 O(C 3 H 6 O) n H in which R 2 represents a straight or branched alkyl group having 1 to 4 carbon atoms, and n represents an integer of 2 or 3; and a third monool solvent selected from the group consisting of 3-methoxy-1-butanol and 3-methoxy-3-methyl-1-butanol;
the content of the third monool solvent in the ink is about 8% by mass or greater and about 27% by mass or less;
the content of the first monool solvent in the ink is about 0.5% by mass or greater and about 9% by mass or less;
the content of the second monool solvent in the ink is about 0.5% by mass or greater and about 9% by mass or less; and
the content of the water-soluble organic solvent component in the ink is about 15% by mass or greater and about 42% by mass or less.
2. The aqueous inkjet ink according to claim 1 , wherein the water-soluble organic solvent component further includes a diol water-soluble organic solvent.
3. The aqueous inkjet ink according to claim 2 , wherein the diol water-soluble organic solvent includes a diol compound represented by HO—R 3 —OH in which R 3 represents a straight or branched alkylene group having a carbon number of 3 to 6.
4. The aqueous inkjet ink according to claim 1 , wherein the first monool solvent is selected from the group consisting of diethyleneglycolmonobutylether and triethyleneglycolmonobutylether.
5. The aqueous inkjet ink according to claim 1 , wherein the second monool solvent is selected from the group consisting of dipropyleneglycolmonomethylether and tripropyleneglycolmonomethylether.
6. The aqueous inkjet ink according to claim 1 , wherein the third monool solvent includes 3 methoxy-1-butanol.
7. The aqueous inkjet ink according to claim 1 , wherein the first monool solvent includes triethyleneglycolmonobutylether, the second monool solvent is selected from the group consisting of dipropyleneglycolmonomethylether and tripropyleneglycolmonomethylether, and the third monool solvent includes 3-methoxy-1-butanol.
8. The aqueous inkjet ink according to claim 1 , wherein the resin microparticles include an acrylic resin or a urethane resin at least in a surface portion thereof.
9. The aqueous inkjet ink according to claim 1 , wherein the surfactant is a silicone-based surfactant.
10. An inkjet recording method comprising the steps of:
ejecting the aqueous inkjet ink according to claim 1 toward a medium including a non-absorbent substrate; and
drying the aqueous inkjet ink ejected on the medium to form an ink film.
11. The inkjet recording method according to claim 10 , wherein the non-absorbent substrate includes poly(vinyl chloride).
12. An inkjet recording device comprising:
a conveyer that transports a medium including a non-absorbent substrate;
a heater that heats the medium;
an ejector that ejects an inkjet ink toward the heated medium; and
an ink container that contains the inkjet ink and supplies the inkjet ink to the ejector; wherein
the inkjet ink is the aqueous inkjet ink according to claim 1 .