Ink composition for inkjet recording
According to an embodiment, an ink composition for inkjet recording comprises a dispersion medium that contains water and glycol ether of which boiling point is equal to or greater than 220 degrees centigrade, a pigment and a core-shell particle that includes a core consisting of hydrophobic acrylic resin and a shell consisting of at least one of aqueous urethane resin and acrylic graft aqueous urethane resin.
1. An ink composition for inkjet recording, comprising:
a dispersion medium configured to contain water and glycol ether, wherein the dispersion medium contains only a glycol ether of which boiling point is equal to or greater than 220 degrees centigrade as glycol ether;
a pigment; and
a core-shell particle configured to include a core consisting of hydrophobic acrylic resin and a shell consisting of acrylic graft aqueous urethane resin.
2. The ink composition for inkjet recording according to claim 1 , wherein the ratio of the core-shell particle to the ink composition is within a range from 1 to 30 mass %.
3. The ink composition for inkjet recording according to claim 2 , wherein the ratio of the glycol ether to the ink composition is within a range from 0.5 to 10 mass %.
4. The ink composition for inkjet recording according to claim 1 , wherein the ratio of the glycol ether to the ink composition is within a range from 0.5 to 10 mass %.
5. The ink composition for inkjet recording according to claim 1 , wherein the glycol ether is tripropylene glycol monomethyl ether.
6. The ink composition for inkjet recording according to claim 1 , wherein the dispersion medium further contains glycerin.
7. The ink composition for inkjet recording according to claim 1 , wherein the pigment is pigment yellow 155.
8. An inkjet recording apparatus comprising:
an ink cartridge;
an ink composition stored in the ink cartridge, the ink composition comprising
a dispersion medium configured to contain water and glycol ether, wherein the dispersion medium contains only a glycol ether of which boiling point is equal to or greater than 220 degrees centigrade as glycol ether,
a pigment, and
a core-shell particle configured to include a core consisting of hydrophobic acrylic resin and a shell consisting of acrylic graft aqueous urethane resin; and
an inkjet head configured to eject the ink composition provided by the ink cartridge.
9. The inkjet recording apparatus according to claim 8 , wherein the ratio of the core-shell particle to the ink composition is within a range from 1 to 30 mass %.
10. The inkjet recording apparatus according to claim 9 , wherein the ratio of the glycol ether to the ink composition is within a range from 0.5 to 10 mass %.
11. The inkjet recording apparatus according to claim 8 , wherein the ratio of the glycol ether to the ink composition is within a range from 0.5 to 10 mass %.
12. The inkjet recording apparatus according to claim 8 , wherein the glycol ether is tripropylene glycol monomethyl ether.
13. The inkjet recording apparatus according to claim 8 , wherein the dispersion medium further contains glycerin.
14. The inkjet recording apparatus according to claim 8 , wherein the pigment is pigment yellow 155.