Ink jet printing method

Patent metadata

Field	Value
Publication number	US-9487667-B2
Application number	US-57573709-A
Country	US
Kind code	B2
Filing date	Oct 8, 2009
Priority date	Oct 8, 2008
Publication date	Nov 8, 2016
Grant date	Nov 8, 2016

Abstract

An ink jet printing method includes forming an image by discharging droplets of an aqueous ink composition onto a non-ink-absorbing or low ink-absorbing recording medium by ink jet printing, and drying the aqueous ink composition on the recording medium during and/or after forming the image, wherein the aqueous ink composition contains a water-insoluble colorant, resin particles, a silicone surfactant, an acetylene glycol surfactant, a pyrrolidone derivative, a 1,2-alkyldiol, a polyhydric alcohol, and water, and the resin particles contain resin fixative particles and wax particles.

First claim

What is claimed is:

1. An ink jet printing method, comprising:
forming an image by discharging droplets of an aqueous ink composition onto a non-ink-absorbing or low ink-absorbing recording medium by ink jet printing; and
drying the aqueous ink composition on the recording medium during and/or after forming the image,
wherein the aqueous ink composition contains a pigment, resin particles, a silicone surfactant, an acetylene glycol surfactant, a 1,2-alkyldiol comprising an alkyl group having 4 to 8 carbon atoms, a polyhydric alcohol, and water, and
the resin particles contain resin fixative particles and wax particles, wherein the resin fixative particles comprise at least one component having a glass transition temperature (Tg) of 30° C. or more, and wherein the recording medium has a surface that is a plastic film.

2. The ink jet printing method according to claim 1 , wherein the wax particles are polyolefin wax particles.

3. The ink jet printing method according to claim 1 , wherein the drying the aqueous ink composition comprises heating the recording medium to a temperature in the range of 40° C. to 80° C. and/or blowing air at a temperature in the range of 40° C. to 80° C. toward the aqueous ink composition deposited on the recording medium.

4. The ink jet printing method according to claim 1 , wherein the aqueous ink composition has a printing resolution of 360 dots per inch (dpi) or more, and the ratio of ink jet nozzle resolution to printing resolution ranges from one to two.

5. The ink jet printing method according to claim 1 , wherein the aqueous ink composition has a viscosity in the range of 1.5 to 15 mPa-s at 20° C.

6. The ink jet printing method according to claim 1 , wherein the aqueous ink composition contains 0.1% to 1.5% by mass of a silicone surfactant.

7. The ink jet printing method according to claim 1 , wherein the aqueous ink composition contains 0.1% to 1.0% by mass of an acetylene glycol surfactant.

8. The ink jet printing method according to claim 1 , wherein the aqueous ink composition contains a pyrrolidone derivative in an amount of 1.0% to 8.0% by mass and the total amount of pyrrolidone derivative and 1,2-alkyldiol is 10.0% by mass or less.

9. The ink jet printing method according to claim 1 , wherein the aqueous ink composition contains a pyrrolidone derivative which is 2-pyrrolidone.

10. The ink jet printing method according to claim 1 , wherein the polyhydric alcohol is at least one selected from the group consisting of ethylene glycol, diethylene glycol, triethylene glycol, propylene glycol, and dipropylene glycol.

11. An ink jet printing method, comprising the steps of:
(a) providing an aqueous ink composition comprising pigment in an amount of 0.5% to 20% by mass; resin particles in an amount of 0.1% to 15% by mass based on solid content of the ink composition; a silicone surfactant in an amount of 0.1% to 1.5% by mass; an acetylene glycol surfactant in an amount of 0.1% to 1.0% by mass; a 1,2-alkyldiol comprising an alkyl group having 4 to 8 carbon atoms in an amount of 1% to 8% by mass; a polyhydric alcohol in an amount of 2% to 20% by mass; and water; wherein the resin particles contain resin fixative particles and wax particles;
(b) forming an image by discharging droplets of the aqueous ink composition onto a non-ink-absorbing or low ink-absorbing recording medium by ink jet printing; and
(c) drying the aqueous ink composition on the recording medium during forming of the image, after forming of the image or both under drying conditions effective for improving the abrasion resistance of the formed image as compared with the abrasion resistance of the image if formed with the aqueous ink composition without the wax particles.

12. The ink jet printing method according to claim 11 wherein the wax particles are polyolefin wax particles.

13. The ink jet printing method according to claim 11 , wherein the drying in step (b) comprising heating the recording medium to a temperature in the range of 40° C. to 80° C. and/or blowing air at a temperature in the range of 40° C. to 80° C. toward the aqueous ink composition discharged on the recording medium.

14. The ink jet printing method according to claim 11 , wherein the aqueous ink composition has a printing resolution of 360 dots per inch (dpi) or more, and the ratio of ink jet nozzle resolution to printing resolution ranges from one to two.

15. The ink jet printing method according to claim 11 , wherein the aqueous ink composition has a viscosity in the range of 1.5 to 15 mPa-s at 20° C.

16. The ink jet printing method according to claim 11 , wherein the aqueous ink composition comprises a pyrrolidone derivative which is 2-pyrrolidone.

17. The ink jet printing method according to claim 11 , wherein the polyhydric alcohol is at least one selected from the group consisting of ethylene glycol, diethylene glycol, triethylene glycol, propylene glycol and dipropylene glycol.

18. The ink jet printing method according to claim 11 , wherein the aqueous ink composition comprises a pyrrolidone derivative, and wherein the total amount of pyrrolidone derivative and 1,2-alkyldiol is 10.0% by mass or less.

19. The ink jet printing method according to claim 11 , wherein a ratio of the resin fixative particles to wax particles in the resin particles is from 1:1 to 5:1 based on solid content.

Assignees

• Ohta Hitoshi
• Seiko Epson Corp

Inventors

• Ohta Hitoshi

Classifications

• C09D11/40 Primary

  Ink-sets specially adapted for multi-colour inkjet printing · CPC title

• C09D11/322

  Pigment inks · CPC title