| abstract |
ASn aqueous ink composition composed of water, a lubricant, a coloring agent dispersed or dissolved in water, and a compound of formula (I): R-O(CH2CH2O)mCH2COOM(I) wherein R is an alkyl group having 6 to 14 carbon atoms which may be branched; M is a cation selected from the consisting of alkali metal ion, quaternary ammonium cation, quaternary phosphonium cation, and alkanol amine cation; and m is an integer of 3 to 12. Further, an ink-jet printing method of recording color images is disclosed, which includes the step of ejecting the above-mentioned aqueous ink composition from nozzles onto an image-receiving medium with a Stöckigt sizing degree of 3 seconds or more as defined in the JIS-P-8122. |