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Ink composition for inkjet recording purposes

An ink composition, inkjet recording technology, applied in the directions of inks, applications, household appliances, etc., can solve the problems of color bleeding, low ink permeability, condensation spots, etc.

Inactive Publication Date: 2011-08-31
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, if the water-based pigment ink generally used in inkjet recording is used, the penetrability of the ink in the recording medium (printing paper) is low, and bleeding and unevenness may occur in the image.

Method used

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  • Ink composition for inkjet recording purposes
  • Ink composition for inkjet recording purposes
  • Ink composition for inkjet recording purposes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0150] Hereinafter, the present invention will be described in more detail through examples, but the present invention is not limited by these examples.

[0151]

[0152] Each component was mixed according to the compositions in Tables 1 to 6 below, and filtered through a 10 μm membrane filter to prepare each ink. It should be noted that the styrene-acrylic resin in the table is a copolymer having a molecular weight of 1600 and an acid value of 150. The polyurethane resin is a copolymer having a molecular weight of 6000 and an acid value of 50. In addition, the fluorene-based resin is a resin having a molecular weight of 3,300, which contains a monomer having a fluorene skeleton at a monomer composition ratio of about 50% by weight, as shown in CAS No. 117344-32-8. In addition, the surfactant used is a polyorganosiloxane-based surfactant, and in the above formula (I), R is a methyl group, a is an integer of 9 to 13, m is an integer of 2 to 4, and n is 1 to 4. A surfactant ...

Embodiment 21～40 and comparative example 5～8

[0166] In addition, ink sets 21 to 40 of Examples and Comparative Examples 21 to 40 and Comparative Examples of ink sets 5-8.

[0167] The tensio-active agent that uses among the embodiment 21~40 and comparative examples 5~8, is that by above-mentioned formula (I), R is methyl, a is the integer of 6~10, m is the integer of 10~20, n is A surfactant composed of an integer of 4 to 8.

Embodiment 41～60 and comparative example 9～12

[0169] In addition, ink sets 41 to 60 of Examples and Comparative Examples 41 to 60 and Comparative Examples of ink sets 9 to 12.

[0170] The surfactant used in Examples 41-60 and Comparative Examples 9-12 is that in the above-mentioned formula (I), R is a hydrogen atom, a is an integer of 7-11, m is an integer of 30-50, and n is A compound with an integer of 3 to 5, and a compound in which R is a methyl group, a is an integer of 9 to 13, m is an integer of 2 to 4, and n is an integer of 1 to 2 and R is a methyl group, and a is 6 to 10 is an integer of , m is an integer of 10 to 20, and n is an integer of 4 to 8. The surfactant is a mixture of compounds.

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Abstract

Provided is an ink composition which provides high quality images with no white stripes or sense of coarseness when printing paper such as art paper is used, even when printing at low resolution in particular. The ink composition for inkjet printing purposes, which contains at least coloring material, water and surfactant and also contains sparingly-water-soluble alkanediol, water-soluble 1,2-alkanediol, dialkylene glycol and water-soluble alkanetriol or sugar, is used in an inkjet recording method.

Description

technical field [0001] The present invention relates to an inkjet recording ink composition capable of obtaining high-quality recorded matter even on various recording media, particularly low water-absorbing recording media such as synthetic paper and printing paper. Background technique [0002] The inkjet recording method is a printing method in which small ink droplets fly and adhere to a recording medium such as paper to perform printing. Due to the innovative progress of inkjet recording technology in recent years, the inkjet recording method has also been used in the field of high-definition printing by silver halide photography and offset printing. Accompanied by this, a high-gloss recording medium, so-called special paper, which is comparable to photographic paper and art paper used in the field of silver halide photography and offset printing, has been developed for inkjet recording, and it is possible to achieve a performance comparable to that of silver halide pho...

Claims

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Application Information

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IPC IPC(8): C09D11/00B41J2/01B41M5/00C09D11/322C09D11/324C09D11/326C09D11/38
CPCC09D11/38C09D11/322B41M5/0047B41M5/0064B41M5/0023
Inventor 水谷启小金平修一佐藤广法上林将史
Owner SEIKO EPSON CORP
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