Ink jet recording method and ink jet recording apparatus
An ink jet recording method capable of recording a high-quality image in which occurrence of fine unevenness is decreased. The ink jet recording method includes recording an image by ejecting ink from a recording head including an ejection orifice for ejecting the ink, an ejection element generating energy for ejecting the ink, and first and second flow paths that communicate between the ejection orifice and the ejection element and in which the ink flows. The ink jet recording method includes an ejection step of ejecting the ink from the ejection orifice, and a flow step of flowing the ink from the first flow path to the second flow path separately from the ejection step. The ink is an aqueous ink having a dynamic surface tension of 35 mN/m or more to 48 mN/m or less at 10 milliseconds.
1. An ink jet recording method for recording an image by ejecting ink from a recording head including (i) an ejection orifice for ejecting the ink, (ii) an ejection element generating energy for ejecting the ink, and (iii) first and second flow paths that communicate between the ejection orifice and the ejection element and in which the ink flows, the ink jet recording method comprising:
an ejection step of ejecting the ink from the ejection orifice; and
a flow step of flowing the ink from the first flow path to the second flow path separately from the ejection step,
wherein the ink is an aqueous ink having a dynamic surface tension of 35 mN/m or more to 48 mN/m or less at 10 milliseconds.
2. The ink jet recording method according to claim 1 , wherein a viscosity of the ink is 3.0 mPa·s or more.
3. The ink jet recording method according to claim 1 , wherein the ink comprises a resin particle.
4. The ink jet recording method according to claim 1 , wherein the ink comprises a water-soluble urethane resin.
5. The ink jet recording method according to claim 1 , wherein the ink comprises a block copolymer.
6. The ink jet recording method according to claim 1 , wherein the ink comprises a polyhydric alcohol derivative in which X mole(s) of ethylene oxide group(s) and Y mole(s) of propylene oxide group(s) are added to a polyhydric alcohol having three or more hydroxy groups and a proportion of {Y/(X+Y)}×100(%) is 70% or more to 90% or less.
7. The ink jet recording method according to claim 1 , wherein the ink comprises a surfactant.
8. The ink jet recording method according to claim 7 , wherein the surfactant comprises a compound represented by the following General Formula (1):
wherein, in General Formula (1), x and y are each the number of added ethylene oxide groups.
9. The ink jet recording method according to claim 1 , wherein the recording head comprises a plurality of ejection orifices, a plurality of first flow paths, and a plurality of second flow paths,
wherein each of the plurality of the first flow paths communicates with an inlet path, and
wherein each of the plurality of the second flow paths communicates with an outlet path.
10. The ink jet recording method according to claim 1 , wherein the flow step comprises flowing the ink from the first flow path to the second flow path without discharging the ink from the ejection orifice.
11. The ink jet recording method according to claim 1 , further comprising a recovery step of the recording head,
wherein, during the recovery step, the flow step is stopped.
12. The ink jet recording method according to claim 1 , wherein, in the flow step, the ink flows in a direction that crosses the ink-ejecting direction.
13. The ink jet recording method according to claim 1 , wherein the flow step comprises flowing the ink from the first flow path to the second flow path by a flowing unit separate from the ejection element.
14. The ink jet recording method according to claim 1 , wherein the flow step comprises flowing the ink from the first flow path to the second flow path by a pressure difference.
15. The ink jet recording method according to claim 14 , wherein a flow rate (mm/s) of the ink is 0.1 mm/s or more to 10.0 mm/s or less.
16. The ink jet recording method according to claim 1 , wherein the flow step comprises flowing the ink intermittently from the first flow path to the second flow path.
17. The ink jet recording method according to claim 16 , wherein a flow rate (mm/s) of the ink is 1.0 mm/s or more to 10.0 mm/s or less.
18. The ink jet recording method according to claim 1 , wherein the recording head is a line head.
19. The ink jet recording method according to claim 18 , wherein the line head has a plurality of ejection element substrates arranged in a linear shape.
20. An ink jet recording apparatus comprising:
a recording head including an ejection orifice for ejecting the ink, (ii) an ejection element generating energy for ejecting the ink, and (iii) first and second flow paths that communicate between the ejection orifice and the ejection element and in which the ink flows; and
a flowing unit for flowing the ink from the first flow path to the second flow path separately from the ejection element,
wherein the ink is an aqueous ink having a dynamic surface tension of 35 mN/m or more to 48 mN/m or less at 10 milliseconds.