Ink jet ink composition and recording method
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.
1 . 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/inch 2 or less.
2 . The recording method according to claim 1 ,
wherein a content of the C.I. Pigment Red 150 with respect to a total mass of the ink jet ink composition is 5 to 8 percent by mass.
3 . The recording method according to claim 1 ,
wherein the azo-based pigment has a chemical structure represented by the following formula (I):
where in the formula (I), A represents a hydrogen atom or an aromatic group.
4 . The recording method according to claim 1 ,
wherein a content of the azo-based pigment with respect to the total mass of the composition is 3 to 7 percent by mass.
5 . The recording method according to claim 1 ,
wherein the content of the 1,2-alkanediol having 4 to 8 carbon atoms with respect to the total mass of the ink jet ink composition is 1.7 to 2.5 percent by mass.
6 . The recording method according to claim 1 ,
wherein the azo-based pigment has a volume average particle diameter D50 of 80 to 110 nm.
7 . The recording method according to claim 1 ,
wherein the ink jet ink composition includes a betaine compound.
8 . The recording method according to claim 1 ,
wherein a content of the betaine compound with respect to the total mass of the ink jet ink composition is 4 to 6 percent by mass.
9 . The recording method according to claim 1 , wherein the maximum adhesion amount of the ink jet ink composition to the recording medium in the ink adhesion step is 2 to 6 mg/inch 2 .