Ink composition

Abstract

An ultraviolet hardenable ink composition excelling in the wetting characteristic (repellence prevention) of ink having impacted a recording medium. There is provided an ultraviolet hardenable ink composition characterized by containing a polyester-modified polydimethylsiloxane as a surfactant in an amount of 0.01 to 1% based on the ultraviolet hardenable ink. Preferably, at least allyl glycol and / or a N-vinyl compound is contained as a polymerizable compound. Incorporation of the polyester-modified polydimethylsiloxane in the surfactant has realized enhancing of the wetting characteristic on all nonabsorptive material surfaces and avoiding of ink repellence.

Description

technical field [0001] The present invention relates to an ink composition, and more specifically, to an ultraviolet curable ink composition that is cured by ultraviolet rays and is excellent in ejection stability and wettability (prevention of repelling) of ink impinging on a recording medium. Background technique [0002] The inkjet recording method is a printing method in which small droplets of an ink composition are scattered and adhered to a recording medium such as paper for printing. This inkjet recording method has a feature of being able to print high-resolution, high-quality images at high speed. An ink composition used in an inkjet recording method generally contains an aqueous solvent as a main component and contains a humectant such as a colorant component and glycerin for preventing clogging of pores. [0003] In addition, when the water-based ink composition is recorded on impermeable paper, cloth or impermeable metal, plastic and other materials, such as pl...

AI Technical Summary

Problems solved by technology

However, this polyether-modified silicone oil can only improve the wettability on a specific non-absorbent material surface, which is not satisfactory.