Liquid discharge apparatus and liquid discharge method
A line head type liquid discharge apparatus includes a treatment liquid applying device, a first discharging device, a heating device, and a second discharging device. The treatment liquid applying device applies a treatment liquid to a non-permeable base material. The first discharging device discharges a first ink containing an organic solvent onto the non-permeable base material to which the treatment liquid has been applied. The heating device heats, with an infrared ray, the non-permeable base material onto which the first ink has been discharged. The second discharging device discharges a second ink containing an organic solvent onto the non-permeable base material heated by the heating device. A content ratio of the organic solvent contained in the first ink is higher than a content ratio of the organic solvent contained in the second ink.
1. A line head type liquid discharge apparatus comprising:
a treatment liquid applying device to apply a treatment liquid to a non-permeable base material;
a first discharging device to discharge a first ink containing an organic solvent onto the non-permeable base material to which the treatment liquid has been applied;
a heating device to heat, with an infrared ray, the non-permeable base material onto which the first ink has been discharged; and
a second discharging device to discharge a second ink containing an organic solvent onto the non-permeable base material heated by the heating device,
a content ratio of the organic solvent contained in the first ink being higher than a content ratio of the organic solvent contained in the second ink.
2. The liquid discharge apparatus according to claim 1 ,
wherein the first ink is a color ink and the second ink is a white ink.
3. The liquid discharge apparatus according to claim 1 , further comprising another heating device to heat the non-permeable base material onto which the second ink has been discharged,
wherein said another heating device includes a drum having a surface whose temperature is adjustable and an air blower facing the drum via the non-permeable base material.
4. The liquid discharge apparatus according to claim 3 ,
wherein the air blower has a temperature higher than the temperature of the surface of the drum.
5. The liquid discharge apparatus according to claim 1 , further comprising another heating device to heat, before discharge of the first ink, the non-permeable base material to which the treatment liquid has been applied,
wherein said another heating device heats, with an infrared ray, the non-permeable base material to which the treatment liquid has been applied.
6. The liquid discharge apparatus according to claim 1 ,
wherein the non-permeable base material has a water absorption amount of 10 mL/m 2 or less from a start of contact until a time point of 30 msec 1/2 in a Bristow method.
7. The liquid discharge apparatus according to claim 1 ,
wherein a printing speed is 30 m/min to 100 m/min.
8. The liquid discharge apparatus according to claim 1 ,
wherein the treatment liquid contains a nonionic aqueous emulsion.
9. A line head type liquid discharge method comprising:
applying a treatment liquid to a non-permeable base material;
discharging a first ink containing an organic solvent onto the non-permeable base material to which the treatment liquid has been applied;
heating, with an infrared ray, the non-permeable base material onto which the first ink has been discharged; and
discharging a second ink containing an organic solvent onto the non-permeable base material heated by the heating,
a content ratio of the organic solvent contained in the first ink being higher than a content ratio of the organic solvent contained in the second ink.