Pigment style ink jet composition with reduced vagueness

Abstract

An ink composition with less eclosion phenomenon for ink-jet printer contains at least one dispersive pigment, aqueous solution medium and 2-pyrrolidone compound. It can improve print quality.

Description

field of invention [0001] The invention relates to an ink-jet ink composition, and in particular to a pigment-type ink-jet ink which can effectively control the line width of printed patterns and reduce feathering. Background of the invention [0002] Inkjet printing technology has been developed for many years. The main advantages of this type of printer are low price, low noise, and good full-color printing quality. It can also use general paper, special printing paper, and special transparencies. Carrier. [0003] Generally speaking, the inks used in the inkjet printing technology can be classified into dye inks and pigment inks, which are classified according to the color components in the inks. Pigments are related to the color system of the ink. The dyes are easy to dissolve in water and show brighter colors, but usually lack good light resistance; moreover, because of their good water solubility, they cannot have good Therefore, when the inkj...

AI Technical Summary

Problems solved by technology

[0008] In addition, U.S. Patent No. 6,231,654 also mentions the addition of nitrogen-containing heterocyclic compounds in inkjet ink compositions, and points out that such compounds include 2-pyrrolidones such as 2-pyrrolidone or N-hydroxyethyl-2-pyrrolidone compound, but because its ink composition belongs to organic solvent ink, it is different from the solution ink of the present invention, and the purpose of adding this type of compound is to increase the adhesion of ink and hydrophobic (hydrophobic) recording medium, but wherein there is no No mention of improvements regarding feathering