| 摘要 |
The present invention relates to aqueous ink jet ink compositions comprising a water-soluble or ink-compatible anti-intercolor bleed agent and ink jet printing processes. The inks typically comprise at least water, a colorant of a dye or pigment, or a mixture of dye and pigment, and a water-soluble or ink-compatible anti-intercolor bleed agent. In one embodiment the water-compatible intercolor bleed agent of the invention comprises a fluorinated composition, more particularly a perfluoroalkyl acid salt. The water-soluble or ink-compatible anti-intercolor bleed agent can form hydrophobic layers near the image boundary, thus preventing undesired mixing of different neighboring inks which forms intercolor bleeding. The inks of the present invention exhibit reduced drying time, intercolor bleeding, and image defect as well as providing uniform ink image on transparencies.
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