Inkjet recording method and printed material
The object of the present invention is to provide an ink jet recording method where it is possible to obtain a printed material where the elution amount (migration) to the outside of the components in a cured ink composition is small and there is little character blurring, and a printed material. The ink jet recording method of the present invention includes a step of ejecting an ink composition which contains 3-methyl pentanediol diacrylate of 30 mass % or more with respect to the total ink composition from an ink jet head onto a support, and a step of irradiating active rays in an atmosphere where the oxygen partial pressure is 0.10 atm or less to cure the ink composition.
1. An ink jet recording method comprising:
ejecting an ink composition which contains 3-methyl pentanediol diacrylate of 30 mass % or more with respect to the total ink composition from an ink jet head onto a support; and
irradiating active rays in an atmosphere where the oxygen partial pressure is 0.10 atm or less to cure the ink composition.
2. The ink jet recording method according to claim 1 , wherein the ink composition contains 3-methyl pentanediol diacrylate of 40 mass % or more with respect to the total ink composition.
3. The ink jet recording method according to claim 1 , wherein the ink composition contains 3-methyl pentanediol diacrylate of 50 mass % or more with respect to the total ink composition.
4. The ink jet recording method according to claim 1 , wherein the ink composition contains a multifunctional acrylate compound with a molecular weight of 315 or more of 5 to 40 mass % with respect to the total ink composition.
5. The ink jet recording method according to claim 1 , wherein the ink composition contains a bisacylphosphine compound.
6. The ink jet recording method according to claim 1 , wherein the ink composition substantially does not contain a polymerization initiator with a molecular weight of 354 or less.
7. The ink jet recording method according to claim 1 , wherein the ink composition contains a compound represented by the following Formula (1) or Formula (2),
in Formula (1) and Formula (2), R 1 , R 2 , R 3 , and R 4 each independently represent an alkyl group which has a carbon number of 1 to 5 or a halogen atom, x and y each independently represent an integer of 2 to 4, m and j each independently represent an integer of 0 to 4, k and n each independently represent an integer of 0 to 3, when j, k, m, and n are integers of 2 or more, R 1 , R 2 , R 3 , and R 4 , which are present as a plurality, may respectively be the same or different, X 1 may include an ether bond and/or an ester bond, and represent a hydrocarbon chain with x valence which has a carbon number of 2 to 300, X 2 may include an ether bond and/or an ester bond, and represent a hydrocarbon chain with y valence which has a carbon number of 2 to 300.
8. The ink jet recording method according to claim 5 , wherein the ink composition contains a compound represented by the following Formula (1) or Formula (2),
in Formula (1) and Formula (2), R 1 , R 2 , R 3 , and R 4 each independently represent an alkyl group which has a carbon number of 1 to 5 or a halogen atom, x and y each independently represent an integer of 2 to 4, m and j each independently represent an integer of 0 to 4, k and n each independently represent an integer of 0 to 3, when j, k, m, and n are integers of 2 or more, R 1 , R 2 , R 3 , and R 4 , which are present as a plurality, may respectively be the same or different, X 1 may include an ether bond and/or an ester bond, and represent a hydrocarbon chain with x valence which has a carbon number of 2 to 300, X 2 may include an ether bond and/or an ester bond, and represent a hydrocarbon chain with y valence which has a carbon number of 2 to 300.
9. The ink jet recording method according to claim 1 , wherein a viscosity of the ink composition at 25° C. is 8 to 13 mPa·s.
10. The ink jet recording method according to claim 1 , wherein the ink composition contains 3-methyl pentanediol diacrylate of 95 mass % or less with respect to the total ink composition.
11. The ink jet recording method according to claim 1 , wherein the ejecting of the ink composition is performed by a single pass system.
12. The ink jet recording method according to claim 11 , wherein a transport speed of the support is 50 m/min or more.
13. The ink jet recording method according to claim 1 , wherein the support includes a material which is selected from a group consisting of polypropylene, polyethylene, polyethylene terephthalate, and nylon, and is a support with a film thickness of 10 to 90 μm.
14. The ink jet recording method according to claim 1 , wherein the active rays are irradiated in an atmosphere where the oxygen partial pressure is 0.02 atmospheres or less.
15. The ink jet recording method according to claim 1 , wherein a content of a monofunctional polymerizable compound is 5 mass % or less with respect to the total ink composition.
16. The ink jet recording method according to claim 1 , wherein the ink jet recording method is used for package printing.
17. A printed material which is obtained by the ink jet recording method according to claim 1 .