Aqueous inkjet ink and inkjet recording method

An inkjet recording method and water-based inkjet technology, which can be used in ink, printing, household appliances, etc., and can solve the problems of reduced pigment dispersion stability and the like

Inactive Publication Date: 2009-09-02
KK TOSHIBA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If a large amount of glycol ether penetrating agent is added, there is a problem that the dispersion stability of the pigment decreases with time
[0009] In the prior art, there has not been obtained an ink that is an aqueous ink for inkjet recording suitable for recording on plain paper, which is excellent in quick-drying, excellent in image quality of printed matter, and does not suffer from intermittent ejection. Ink clogging occurs, and pigments can be dispersed stably even with the passage of time

Method used

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  • Aqueous inkjet ink and inkjet recording method

Examples

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Embodiment Construction

[0018] Hereinafter, embodiments of the present invention will be specifically described.

[0019] figure 1 It is a cross-sectional view of a recording apparatus used in the inkjet recording method according to the embodiment of the present invention. The paper cassette 100 and the paper cassette 101 are used for storing sheets p of different sizes. The paper feed roller 102 or the paper feed roller 103 takes out the paper p corresponding to the selected paper size from the paper cassette 100 or the paper cassette 101 , and conveys it to the pair of conveying rollers 104 and 105 and the pair of registration rollers 106 .

[0020] Tension is imparted to the conveyor belt 107 by the driving roller 108 and the two driven rollers 109 . The surface of the conveyor belt 107 is provided with holes at predetermined intervals, and a negative pressure chamber 111 connected to a fan 110 is provided in order to attract the paper p to the conveyor belt 107 inside the conveyor belt 107 . ...

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PUM

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Abstract

An embodiment of the invention is concerned with an aqueous inkjet ink containing an ink solvent containing water and a water-soluble organic solvent containing glycerin and triethylene glycol and a pigment dispersed in the ink solvent. The water-soluble organic solvent accounts for from 30 to 80% by weight of the ink solvent, a weight of the triethylene glycol is from 0.5 to 1.5 times the weight of the glycerin, and the pigment is blended in an amount of from 2 to 20% by weight of the total weight of the ink.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS [0002] This application is based on, and claims priority to, US Provisional Patent Application No. 61 / 032,368, filed February 28, 2008, which is incorporated herein by reference in its entirety. technical field [0003] The present invention relates to an aqueous inkjet ink and an inkjet recording method. Background technique [0004] Conventional inks for ink jet recording are generally inks in which various water-soluble dyes are dissolved in an aqueous medium. Recently, inks in which pigments are dispersed in an aqueous medium have also been proposed. Compared with inks using water-soluble dyes, inks using pigments are superior in water resistance and light fastness. [0005] When preparing an inkjet ink by dispersing a pigment in a highly volatile solvent such as water, it is necessary to consider the discharge performance of the inkjet head. By the volatilization of the solvent part, the balance of the mixing ratio bet...

Claims

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Application Information

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IPC IPC(8): C09D11/02B41J2/01
CPCC09D11/322
Inventor 秋山良造清本博史北胁崇也
Owner KK TOSHIBA
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