Anisotropic colorants for inkjet printing
AssigneeHewlett-Packard Development Company, L.P.
InventorDavid Tyvoll
Life of this patent
Estimating the term…
Abstract
The present invention relates to anisotropic colorants and ink-jet ink compositions that comprise the anisotropic colorants. These anisotropic colorants are highly stable and can be designed to provide enhanced chroma, gloss, gloss uniformity, smearfastness, print quality, drytime, and improved resistance to water when applied to a media. Moreover, inks formulated with these new colorants are useful in ink-jet printing, including thermal ink jet printing, piezoelectric ink jet printing, and continuous ink jet printing.
Claims18
An ink for use in inkjet printing comprising one or more anisotropic colorants.
A method of inkjet printing wherein an ink formulation is applied onto a media by means of a nonimpact printer;
- wherein said ink comprises an anisotropic ink.
A method of improving the waterfastness of an ink for inkjet printing comprising printing said ink onto a media;
- said ink comprises an anisotropic colorant wherein said colorant has two or more localized areas on said colorant surface and wherein one of said localized areas has hydrophilic moities attached and another of said localized areas has hydrophobic moities attached.
Dependencies are inferred from the claim text.