Ink jet textile printing method
An ink jet textile printing method includes applying a pretreatment liquid that contains a coagulant to a fabric, discharging a first ink composition from a first recording head to apply the first ink composition to the fabric, and discharging a second ink composition from a second recording head to apply the second ink composition to the fabric. The first ink composition contains water, pigment, and a cohesive resin. The second ink composition contains water, pigment, and a non-cohesive resin.
1. An ink jet textile printing method comprising:
applying a pretreatment liquid containing a coagulant to a fabric;
then discharging a first ink composition containing water, a first pigment, and a cohesive resin from a first recording head to apply the first ink composition to the fabric, wherein a content of the water is in the range of 20 to 80% by mass, a content of the first pigment is in the range of 1 to 30% by mass, and a content of the cohesive resin is in the range of 1 to 15% by mass, based on a total mass of the first ink composition;
then discharging a second ink composition containing water, a second pigment, and a non-cohesive resin from a second recording head to apply the second ink composition to the fabric, wherein a content of the water is in the range of 20 to 80% by mass, a content of the second pigment is in the range of 1 to 30% by mass, and a content of the non-cohesive resin is in the range of 1 to 15% by mass, based on a total mass of the second ink composition;
aggregating the first pigment and the cohesive resin in the first ink composition through reaction with the pretreatment liquid on the fabric such that aggregates of the first pigment remain on the surface of the fabric; and
aggregating the second pigment in the second ink composition through reaction with the pretreatment liquid such that aggregates of the second pigment remain on the surface of the fabric, and
the non-cohesive resin in the second ink composition does not aggregate on the fabric.
2. The ink jet textile printing method according to claim 1 , wherein at least one of the first recording head and the second recording head is a line head.
3. The ink jet textile printing method according to claim 1 , wherein the second ink composition is applied after the first ink composition is applied.
4. The ink jet textile printing method according to claim 1 , wherein a static surface tension of the second ink composition at 25° C. is smaller than a static surface tension of the first ink composition at 25° C.
5. The ink jet textile printing method according to claim 1 , wherein the cohesive resin is urethane resin.
6. The ink jet textile printing method according to claim 1 , wherein the non-cohesive resin includes at least one or acrylic resin and silicone resin.
7. The ink jet textile printing method according to claim 1 , wherein the coagulant is a cationic resin.
8. The ink jet textile printing method according to claim 1 , wherein a ratio A:B, where A is an amount of the first ink composition applied per unit area of the fabric and B is an amount of the second ink composition applied per unit area of the fabric, is from 40:60 to 60:40 on a mass basis.