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    • 6. 发明授权
    • Process for preparing an ink composition
    • 油墨组合物的制备方法
    • US5720802A
    • 1998-02-24
    • US674066
    • 1996-07-01
    • Raymond W. WongCarol A. Jennings
    • Raymond W. WongCarol A. Jennings
    • C09D11/00C09D11/02
    • C09D11/322
    • Processes are disclosed for fabricating an ink composition which uses a high pressure shearing force to produce a desired reduction and dispersion of pigment particles in a concentrated dispersion. In one disclosed process, an aqueous ink mixture including water, a solvent and a black pigment colorant dispersion is processed by a microfluidizer and filtered to obtain a desired particle size making the ink suitable for ink jet printing applications. In another process, the pigment dispersion is first microfluidized and the water and solvent added to form a mixture which is then filtered. These processes simplify the ink fabrication by eliminating a sonification and centrifugation step required by prior art processes.
    • 公开了用于制造使用高压剪切力产生颜料颗粒在浓缩分散体中所需的还原和分散的油墨组合物的方法。 在一个公开的方法中,包含水,溶剂和黑色颜料着色剂分散体的水性油墨混合物通过微流化器加工并过滤以获得所需的粒度,使得适合于喷墨印刷应用的油墨。 在另一种方法中,颜料分散体首先被微流化,并加入水和溶剂以形成混合物,然后将其过滤。 这些方法通过消除现有技术方法所需的超声处理和离心步骤来简化油墨制造。