Ultraviolet curable type ink-jet ink composition, recording method and recording apparatus using same
Provided is a UV curable type ink-jet ink composition containing a monomer A which is expressed by the following general formula (I): CH 2 ═CR 1 —COOR 2 —O—CH═CH—R 3 (I) (in the formula, R 1 is a hydrogen atom or methyl radical, R 2 is a bivalent organic residue radical having a carbon number in a range of 2 to 20, and R 3 is a hydrogen atom or a univalent organic residue radical having a carbon number in a range of 1 to 11), a compound B containing five or more (meth)acryloyl radicals per molecule, and a monofunctional (meth)acrylate C having an aromatic ring skeleton, wherein the monofunctional (meth)acrylate C which is in a range of 5 to 35 wt % with respect to the total weight of the ink composition is contained, wherein the compound B is in a range of 5 to 40 wt % with respect to the total weight of the ink composition, wherein the monomer A is in a range of 10 to 70 wt % with respect to the total weight of the ink composition.
1. A UV curable type ink-jet ink composition containing a monomer A which is expressed by the following general formula (I):
CH2=CR 1 —COOR 2 —O—CH═CH—R 3 (I)
(in the formula, R 1 is a hydrogen atom or methyl radical, R 2 is a bivalent organic residue radical having a carbon number in a range of 2 to 20, and R 3 is a hydrogen atom or a univalent organic residue radical having a carbon number in a range of 1 to 11),
a compound B containing five or more (meth) acryloyl radicals per molecule, and
a monofunctional (meth)acrylate C having an aromatic ring skeleton,
wherein the monofunctional (meth)acrylate C which is in a range of 5 to 35 wt % with respect to the total weight of the ink composition is contained,
wherein the compound B is in a range of 5 to 40 wt % with respect to the total of the ink composition,
wherein the monomer A is in a range of 10 to 70% with respect to the total weight of the ink composition.
2. The UV curable type ink-jet ink composition according to claim 1 , wherein the monomer A is (meth)acrylic acid 2-(vinyloxyethoxy)ethyl.
3. The UV curable type ink-jet ink composition according to claim 1 , wherein the compound B contains at least one of a hexa (meth)acrylate compound having six (meth) acryloyl radicals per molecule and a penta(meth)acrylate compound having five (meth) acryloyl radicals per molecule.
4. The UV curable type ink-jet ink composition according to claim 1 , wherein the compound B contain a (meth)acrylate having a dipentaerythritol skeleton.
5. The UV curable type ink-jet ink composition according to claim 3 , wherein the compound B contains a dipentaerythritol hexa (meth)acrylate or a dipentaerythritol penta (meth)acrylate.
6. The UV curable type ink-jet ink composition according to claim 1 , wherein the monofunctional (meth)acrylate C having an aromatic ring skeleton is at least one of a benzyl (meth)acrylate and a phenoxyethyl (meth)acrylate.
7. The UV curable type ink-jet ink composition according to claim 1 , wherein an acylphosphine oxide compound is contained as the photopolymerization initiator.
8. The UV curable type ink-jet ink composition according to claim 7 , wherein an acylphosphine oxide compound which is in a range of 7 to 15 wt % with respect to the total weight of the ink composition is contained as the photopolymerization initiator.
9. The UV curable type ink-jet ink composition according to claim 1 , wherein the curing is performed through illumination of ultraviolet rays of which the light emitting peak wavelength is in a range of 350 to 420 nm with an illumination energy of equal to or less than 300 mJ/cm 2 .
10. The UV curable type ink-jet ink composition according to claim 1 , wherein viscosity at 20° C. is in a range of 3 to 30 mPa·s.
11. The UV curable type ink-jet ink composition according to claim 1 , wherein the curing is performed in a state of a thin film having a thickness of 0.5 to 3 μm.
12. An ink jet recording method of ejecting the UV curable type ink-jet ink composition according to claim 1 on a recording medium and curing the ejected UV curable type ink-jet ink composition through illumination using a UV-LED of which the light emitting peak wavelength is in a range of 350 to 420 nm.
13. An ink jet recording apparatus for ejecting the UV curable type ink-jet ink composition according to claim 1 on a recording medium and curing the ejected UV curable type ink-jet ink composition through illumination using a UV-LED of which the light emitting peak wavelength is in a range of 350 to 420 nm.
14. The UV curable type ink-jet ink composition according to claim 1 , wherein the monomer A is present in a range of 10 to 41 wt. % with respect to the total weight of the ink composition.
15. The UV curable type ink-jet ink composition according to claim 1 , wherein the monomer B is present in a range of 5 to 30 wt. % with respect to the total weight of the ink composition.