Aqueous inkjet ink composition

Abstract

The present invention addresses the problem of providing an aqueous inkjet ink composition which exhibits excellent ejection stability during the time of high gap, antifouling properties, adhesion, dryability, rubbing resistance and ejection stability even if printed on a non-absorbing medium, while having excellent storage stability. As a solution for the problem, the present invention provides an aqueous inkjet ink composition which contains a pigment, an alkali-soluble resin, a polyolefin resin emulsion, a basic compound, an aqueous medium and a surfactant, and which is configured such that: the alkali-soluble resin has a glass transition temperature of 40-100 DEG C; the polyolefin resin emulsion has an average particle diameter of 5-300 nm; the solid content of the polyolefin resin emulsion is 0.5-5.0% by mass of the aqueous inkjet ink composition; and the surfactant contains at least an acetylene diol-based surfactant.

Description

technical field [0001] The present invention relates to a water-based inkjet spray that is excellent in dryness even when printed on non-absorbent media such as coated paper and polyvinyl chloride sheet, has excellent rubbing fastness of printed matter, and is also excellent in ejection stability and storage stability. Ink composition for ink. Background technique [0002] Inkjet printing and recording methods are printing and recording methods in which ink droplets are directly ejected from very fine nozzles onto printing and recording substrates and adhered to obtain characters or images. [0003] The water-based inkjet printing method has traditionally been considered unsuitable for the manufacture of a large number of printed matter due to problems such as time-consuming printing due to the scanning type of the printing head and slow drying of the water-based medium. [0004] However, on the other hand, since it does not require a plate making process like the usual pri...

AI Technical Summary

Problems solved by technology

However, in this method, the ejection stability and the antifouling property of the printed matter are insufficient at the time of high gap (printing method in which the distance between the ink nozzle and the printing medium is longer than usual)

[0010] As mentioned above, in the water-based inkjet printing method, it is currently difficult to obtain excellent dryness and rubbing fastness of printed matter in research on the use of non-absorbent media such as coated paper and polyvinyl chloride sheets as printing media. A water-based inkjet ink composition with excellent adhesion, discharge stability, storage stability, discharge stability at high gaps, antifouling properties, and adhesion

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