A process for producing an aqueous ink for inkjet printing capable of giving an elevated print density of printed matters, being improved in fixability to the material to be printed, water resistance and improved storage stability and scarcely scorching onto a printer head. This process comprises dissolving a salt-forming group-having polymer and a hydrophobic dye in a water-insoluble organic solvent to obtain a solution, adding water and a neutralizing agent optionally together with a surfactant to the solution to ionize the salt-forming group of the polymer, emulsifying the resulting mixture, and removing out the solvent from the emulsion to obtain an ink containing an aqueous dispersion of the polymer particles in which the dye has been encompassed.
一种用于喷墨打印的
水性墨
水的生产工艺,这种墨
水能够提高打印物的打印密度,改善对打印材料的固定性、耐
水性和贮存稳定性,并且在打印头上几乎不会焦化。该工艺包括:将含盐基团的聚合物和疏
水性
染料溶解在不溶于
水的有机溶剂中,得到溶液;向溶液中加入
水和中和剂(可选择与表面活性剂一起加入),使聚合物的含盐基团电离;乳化得到的混合物;从乳液中除去溶剂,得到含有聚合物颗粒
水性分散体的墨
水,
染料已被包在其中。