Ink jet recording method and ink jet recording apparatus
Provided is an ink jet recording method including: discharging an ultraviolet ray-curable ink, which has a viscosity at 20° C. of 25 mPa·s or less and an average equivalent of polymerizable unsaturated double bond of 100 to 150, from a head onto a recording medium at a discharge temperature of 30° C. to 40° C.; and irradiating the ultraviolet ray-curable ink, attached onto the recording medium, with ultraviolet rays emitted from a light source to cure the ultraviolet ray-curable ink.
1. An ink jet recording method comprising:
discharging an ultraviolet ray-curable ink, which has a viscosity at 20° C. of 25 mPa·s or less and an average equivalent of polymerizable unsaturated double bond of 100 to 150, from a head onto a recording medium at a discharge temperature of 30° C. to 40° C.; and
irradiating the ultraviolet ray-curable ink, attached onto the recording medium, with ultraviolet rays emitted from a light source to cure the ultraviolet ray-curable ink,
wherein a support has a surface on which the recording medium is transported, supports the recording medium, and moves relative to the head, and a time period in which the support moves relative to the head from a position and returns to the position is longer than or equal to 5 seconds.
2. The ink jet recording method according to claim 1 ,
wherein the head is a line head having a length longer than or equal to a width of the recording medium, and recording is performed using a line type ink jet recording apparatus that discharges the ultraviolet ray curable ink from the line head onto the recording medium which is scanned relative to the line head.
3. The ink jet recording method according to claim 1 , wherein a material of the support for the recording medium is a metal.
4. The ink jet recording method according to claim 1 ,
wherein a viscosity at 20° C. of the ultraviolet raycurable ink is 15 mPa·s to 25 mPa·s.
5. The ink jet recording method according to claim 1 ,
wherein the light source is a light emitting diode.
6. The ink jet recording method according to claim 1 ,
wherein the ultraviolet ray-curable ink contains 30% by mass to 70% by mass of monofunctional (meth)acrylate and 20% by mass to 60% by mass of bifunctional or higher polyfunctional (meth)acrylate.
7. The ink jet recording method according to claim 1 ,
wherein the ultraviolet ray-curable ink is curable by irradiation of ultraviolet rays having an irradiation energy of 200 mJ/cm2 or lower.
8. An ink jet recording apparatus which performs recording using the ink jet recording method according to claim 1 .
9. An ink jet recording apparatus which performs recording using the ink jet recording method according to claim 2 .
10. An ink jet recording apparatus which performs recording using the ink jet recording method according to claim 3 .
11. An ink jet recording apparatus which performs recording using the ink jet recording method according to claim 4 .
12. An ink jet recording apparatus which performs recording using the ink jet recording method according to claim 5 .
13. An ink jet recording apparatus which performs recording using the ink jet recording method according to claim 6 .
14. An ink jet recording apparatus which performs recording using the ink jet recording method according to claim 7 .