公开(公告)号：US5788753A

公开(公告)日：1998-08-04

申请号：US738532

申请日：1996-10-28

申请人： Norman E. Pawlowski ,  David J. Halko ,  Joseph W. Tsang ,  Kimberly L. Hockaday Dahm

发明人： Norman E. Pawlowski ,  David J. Halko ,  Joseph W. Tsang ,  Kimberly L. Hockaday Dahm

IPC分类号： C09B69/04 ,  C09D11/00 ,  C09D11/02

CPC分类号： C09D11/328 ,  C09B69/04

摘要： An ink-jet ink for ink-jet printers is provided, comprising: (a) an aqueous-based vehicle; and (b) an anionic dye complexed with a polyamine in an amount sufficient to form a pH-insensitive, water-soluble, dye:polyamine complex that acts like a cationic dye. Further, a method of converting the anionic dye to the cationic dye for formulating the ink-jet ink having a desired pH is provided. The method comprises adding a sufficient amount of the polyamine to form the dye:polyamine complex. The dye:polyamine complex is a complex of the dye and the polyamine polymer, which is cationic. Consequently, this complex behaves as a cationic dye. These ink-jet inks show remarkable waterfastness on a variety of common office papers and are pH-insensitive and even in some cases, completely pH-independent. These inks are thus stable over a wide pH range. In addition, the ink-jet inks exhibit superior ink-to-ink bleed when printed next to a drop of another color ink which contains an anionic polymer or carboxylated colorant and resist crusting or drying in ink-jet nozzles.

摘要翻译： 提供一种用于喷墨打印机的喷墨油墨，包括：（a）水性载体; 和（b）与多胺络合的阴离子染料，其量足以形成像阳离子染料一样起作用的pH不敏感的水溶性染料：多胺络合物。 此外，提供了将阴离子染料转化为阳离子染料以配制具有所需pH的喷墨油墨的方法。 该方法包括加入足量的多胺以形成染料：多胺络合物。 染料：多胺络合物是染料和聚胺聚合物的复合物，其是阳离子的。 因此，这种复合物表现为阳离子染料。 这些喷墨墨水在各种常见的办公用纸上显示出显着的耐水性，并且pH不敏感，甚至在某些情况下，完全不依赖于pH。 因此，这些油墨在宽的pH范围内是稳定的。 此外，喷墨墨水在印刷在一滴含有阴离子聚合物或羧化着色剂的另一种彩色墨水上并且在喷墨喷嘴中抵抗结皮或干燥时表现出优异的墨到墨渗色。