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Ink composition

An ink composition and ink technology, which can be used in inks, household utensils, applications, etc., can solve the problems of increased image graininess, reduced image quality, and reduced ink drying

Inactive Publication Date: 2018-09-28
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the case of simply using an inkjet ink using a penetrating agent with a high standard boiling point, although the amount of VOC generation from the recorded image is reduced, the ejection becomes unstable and the ink adhering to the recording medium dries up. Bleeding occurs on the recorded image due to a decrease in performance, and the graininess of the image increases and the image quality deteriorates

Method used

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  • Ink composition

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Embodiment Construction

[0029] Next, preferred embodiments of the present invention will be described. The embodiments described below illustrate an example of the present invention. In addition, this invention is not limited to the following embodiment, It also includes the various modified examples implemented in the range which does not change the gist of this invention.

[0030] 1. Ink composition

[0031] The ink composition according to this embodiment is characterized in that it contains 3-methyl-1,5-pentanediol (3-methyl-1,5-pentanediol), diethylene glycol-2-ethylhexyl ether (di (ethylene glycol)2-ethylhexyl ether) and water, not containing more than 0.5% by mass of 1,2-hexanediol, based on mass, (3-methyl-1,5-pentanediol) / (diethylene diol-2-ethylhexyl ether) is 13 or more and 67 or less. The ink composition according to this embodiment contains water, and 3-methyl-1,5-pentanediol and diethylene glycol-2-ethylhexyl ether as organic solvents, and for example, Coloring materials, resin comp...

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Abstract

The invention provides an ink composition that can reduce VOC emission and achieve both high ejection stability and high image quality when used in the ink jet recording method. The ink composition contains 3-methyl-1,5-pentanediol, di(ethylene glycol) 2-ethylhexyl ether, and water, and has a 1,2-hexanediol content of 0.5% by mass or less. In the ink composition, the mass ratio of 3-methyl-1,5-pentanediol to di(ethylene glycol) 2-ethylhexyl ether is in the range of 13 / 1 to 67 / 1.

Description

technical field [0001] The present invention relates to ink compositions. Background technique [0002] There is known an inkjet recording method in which tiny ink droplets are ejected from a nozzle of a recording head of an inkjet recording device to record an image on a recording medium. Paper, etc.) using the above method for image recording, on recording media with little ink absorption (low absorption) (such as coated paper, coated paper, etc.), or recording media that hardly absorb ink (non-absorption) The above-mentioned method is also used in image recording (for example, plastic film, etc.). In addition, as inks used in inkjet recording devices, water-based water-based inks are increasingly used from the viewpoint of the global environment, safety, and the like. [0003] In the inkjet recording method using an aqueous ink, alkanediol is used as a penetrating solvent in order to achieve both discharge stability and image quality. For example, Patent Document 1 dis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/38
CPCC09D11/38C09D11/322C09D11/30C09D11/102C09D11/02
Inventor 中野智仁水泷雄介森田圭介
Owner SEIKO EPSON CORP