Ink jet ink composition and recording method
An ink jet ink composition includes a self-dispersible pigment; an alcohol having 4 carbon atoms or less; an asymmetric alkyl ether; and water, a content of the alcohol with respect to a total mass of the ink jet ink composition is 0.5 to 15 percent by mass, and a content of the water with respect to the total mass of the ink jet ink composition is 10 to 40 percent by mass.
1 . An ink jet ink composition comprising:
a self-dispersible pigment;
an alcohol having 4 carbon atoms or less;
an asymmetric alkyl ether; and
water,
wherein a content of the alcohol with respect to a total mass of the ink jet ink composition is 8.0 to 15 percent by mass,
a content of the water with respect to the total mass of the ink jet ink composition is 10 to 25 percent by mass, and
a content of the asymmetric alkyl ether with respect to the total mass of the ink jet ink composition is 30 to 60 percent by mass.
2 . The ink jet ink composition according to claim 1 , wherein a content of the self-dispersible pigment with respect to the total mass of the ink jet ink composition is 1.0 to 10 percent by mass.
3 . The ink jet ink composition according to claim 1 , wherein a content of the alcohol with respect to one part by mass of the self-dispersible pigment is 0.1 to 2.5 parts by mass.
4 . The ink jet ink composition according to claim 1 , wherein the asymmetric alkyl ether includes a compound represented by the following formula (1)
R 1 O—(R 3 O) n —R 2 (1)
where R 1 and R 2 each independently represent a hydroxy group, an alkyl group, an alkyl group having a hydroxy group, or an acyl group, R 1 and R 2 represent groups different from each other, R 3 represents an alkylene group having 2 to 4 carbon atoms, and n represents an integer of 1 to 4.
5 . The ink jet ink composition according to claim 4 , wherein in the formula (1), a total number of carbon atoms of R 1 and R 2 with respect to n is 1.5 or less.
6 . The ink jet ink composition according to claim 1 , wherein the asymmetric alkyl ether includes at least one selected from the group consisting of triethylene glycol monomethyl ether, triethylene glycol monobutyl ether, and diethylene glycol monoethyl ether acetate.
7 . The ink jet ink composition according to claim 1 , further comprising an aprotic solvent.
8 . The ink jet ink composition according to claim 7 ,
wherein the aprotic solvent includes at least one selected from the group consisting of 2-pyrrolidone, 1-(2-hydroxyethyl)-2-pyrrolidone, γ-butyrolactone, propylene carbonate, and ethylene carbonate.
9 . The ink jet ink composition according to claim 7 ,
wherein a content of the aprotic solvent with respect to the total mass of the ink jet ink composition is 10 to 40 percent by mass.
10 . A recording method comprising:
an ejection step of ejecting the ink jet ink composition according to claim 1 to a recording medium by an ink jet method.
11 . The recording method according to claim 10 ,
wherein recording medium is regular paper.