The invention relates to latex-type waterborne
pigment oil ink for the
inkjet printing of a non-absorbed substrate, which is prepared from the following components in percentage by weight: 1-15 percent of
pigment dispersant, 0.01-2.0 percent of surface
active agent, 10-40 percent of water-soluble co-
solvent, 0.1-30 percent of water-based
polymer emulsion and the balance of deionized water. The preparation method comprises the following steps of: stirring and mixing the surface
active agent, the water-soluble co-
solvent and the deionized water under a normal temperature; then, slowly adding the waterborne
polymer emulsion, continuously stirring; and finally, adding the
pigment dispersant, fully mixing the contents to form an even dispersing
system and filtering the even dispersing
system to obtain latex-type waterborne pigment oil ink. The latex-type waterborne pigment oil ink for the
inkjet printing has wide range of suitable substrates, is environment-friendly in the oil ink preparation process and the printing process and has good printing smoothness and high accuracy; and printed images on the non-absorbed substrate have excellent resistance to
rubbing, scraping, sunshine and water and are suitable for outdoor use.