Ink composition including a modified fatty alcohol polyglycol ether surfactant

An ink composition, comprising:

• a dye colorant dispersion present in an amount ranging from about 1.0 wt % to about 7.0 wt % based on a total weight of the ink;
• a solvent selected from the group consisting of glycerol, ethoxylated glycerol, 2-methyl-1,3-propanediol, dipropylene glycol, and combinations thereof, the solvent being present in an amount ranging from about 10 wt % to about 22 wt % based on the total weight of the ink;
• a chelating agent selected from the group consisting of methylglycinediacetic acid, trisodium salt, 4,5-dihydroxy-1,3-benzenedisulfonic acid disodium salt monohydrate, ethylenediaminetetraacetic acid (EDTA), hexamethylenediamine tetra(methylene phosphonic acid), potassium salt, and combinations thereof, the chelating agent present in an amount ranging from about 0.05 wt % to about 0.25 wt % based on the total weight of the ink;
• oleth-3-phosphate present in an amount ranging from about 0.1 wt % to about 0.75 wt % based on the total weight of the ink;
• and
• a surfactant including a modified fatty alcohol polyglycol ether in an amount ranging from about 1.2 wt % to about 3.0 wt % based on the total weight of the ink.

A printing method, comprising:

• thermal inkjet printing, from a thermal inkjet printhead, an ink composition onto a coated textile substrate, the ink composition including:
• a dye colorant dispersion present in an amount ranging from about 1.0 wt % to about 7.0 wt % based on a total weight of the ink;
• a solvent selected from the group consisting of glycerol, LEG-1, and combinations thereof, the solvent being present in an amount ranging from about 10 wt % to about 22 wt % based on the total weight of the ink;
• a chelating agent present in an amount ranging from about 0.05 wt % to about 0.2 wt % based on the total weight of the ink;
• oleth-3-phosphate present in an amount ranging from about 0.1 wt % to about 0.3 wt % based on the total weight of the ink;
• and
• a surfactant including a modified fatty alcohol polyglycol ether, the surfactant in an amount ranging from about 0.1 wt % to about 0.4 wt %;
• and
• exposing the ink on the textile substrate to a post-treatment process involving at least heat to form an image on the textile substrate.